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16251. [Image] Crater Lake limnological studies 1986 annual report


	1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering
	Citation Citation Citation Abstract Copy Title: Crater Lake limnological studies 1986 annual report Author: Oregon State University; in collaboration with Crater Lake National Park Year: 1986, 2009 1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering Title: Crater Lake limnological studies 1986 annual report Author: Oregon State University; in collaboration with Crater Lake National Park Year: 1986, 2009 1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering

16252. [Image] Crater Lake limnological studies 1987 annual report


	1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering
	Citation Citation Citation Abstract Copy Title: Crater Lake limnological studies 1987 annual report Author: Oregon State University; in collaboration with Crater Lake National Park Year: 1987, 2009 1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering Title: Crater Lake limnological studies 1987 annual report Author: Oregon State University; in collaboration with Crater Lake National Park Year: 1987, 2009 1982-2002; ill., maps; Title covers calendar years 1985-1987; CA 9000-3-0003 Subagreement 12; Includes bibliographic references; Issues lack volume numbering

16253. [Image] Crater Lake limnological studies 1990 annual report


	1982 - 2002; ill., maps; Title covers calendar years 1990-2002; Bibliographic description is based on 1990 annual report; CA 9000-8-0006 Subagreement 8; Includes bibliographic references; Issues lack volume ...
	Citation Citation Citation Abstract Copy Title: Crater Lake limnological studies 1990 annual report Author: Oregon State University; in collaboration with the National Park Service Year: 1990, 2009 1982 - 2002; ill., maps; Title covers calendar years 1990-2002; Bibliographic description is based on 1990 annual report; CA 9000-8-0006 Subagreement 8; Includes bibliographic references; Issues lack volume numbering Title: Crater Lake limnological studies 1990 annual report Author: Oregon State University; in collaboration with the National Park Service Year: 1990, 2009 1982 - 2002; ill., maps; Title covers calendar years 1990-2002; Bibliographic description is based on 1990 annual report; CA 9000-8-0006 Subagreement 8; Includes bibliographic references; Issues lack volume numbering

16254. [Article] Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

As highlighted in this study, shallow-water habitats and the prey they provide are important for juvenile salmon in the Columbia River estuary, but the spread of invasive species and large-scale changes ...

Citation

16255. [Article] Factors affecting within-season and between-season breeding dispersal of burrowing owls in California

Dispersal is integral to our understanding of the life history and population biology of many vertebrates, but difficulties in detecting long distance movements have complicated its study. Moreover, studies ...

Citation

16256. [Article] DANCE AS COMMUNICATION: HOW HUMANS COMMUNICATE THROUGH DANCE AND PERCEIVE DANCE AS COMMUNICATION

58 pages. A thesis presented to the Department of Dance and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Arts, Spring 2016.

Citation

16257. [Image] Irrigation system maintenance, groundwater quality, and improved production


	"April 2004"; Includes bibliographical references (p. 3).
	Citation Citation Citation Abstract Copy Title: Irrigation system maintenance, groundwater quality, and improved production Author: Selker, John S. Year: 2004, 2005 "April 2004"; Includes bibliographical references (p. 3). Title: Irrigation system maintenance, groundwater quality, and improved production Author: Selker, John S. Year: 2004, 2005 "April 2004"; Includes bibliographical references (p. 3).

16258. [Image] Genetic analysis of Klamath River green sturgeon (acipensar [i.e. acipenser] medirostris)


	Abstract The utility of using isozyme analysis to study the stock structure among West Coast populations of green sturgeon (Acipenser medirostris) was assessed. Isozyme analysis was not determined ...
	Citation Citation Citation Abstract Copy Title: Genetic analysis of Klamath River green sturgeon (acipensar [i.e. acipenser] medirostris) Author: Mulligan, Helen Year: 2000, 2005 Abstract The utility of using isozyme analysis to study the stock structure among West Coast populations of green sturgeon (Acipenser medirostris) was assessed. Isozyme analysis was not determined to be an adequate method for assessing stock structure in green sturgeon for the following reasons: 1) the complex nature of isozyme expression 2) the relatively poor resolution of enzyme systems for our samples 3) the invasive nature of collecting tissue samples for isozyme analysis, which necessitates sacrificing the fish, precludes collection of samples from some rivers. The stomach contents of 23 green sturgeon collected from fish harvested in the Klamath River were analyzed. Only four stomachs contained identifiable food items, with the others containing food far too digested for identification, gravel, or no contents. Two stomachs contained the small gastropod, Olivellapyna, one stomach contained the carapace remains of a female Dungeness crab, Cancer magister, and one stomach contained the posterior portions of three ammocoetes, Lampetra tridentata. Preliminary analysis was conducted using mtDNA to assess the potential of using this technique for assessing the stock structure of green sturgeon. Although the Klamath River Fishery Restoration Program did not fund this analysis, the results are presented because this work was designed to yield complementary information to the isozyme study. No diagnostic differences were detected between samples collected from the Klamath River and the Columbia River estuary using Restriction Fragment Length Polymorphism analysis. Study results indicated that microsateliite DNA analyst might be the most appropriate current genetic technique for assessing the population structure of green sturgeon. Title: Genetic analysis of Klamath River green sturgeon (acipensar [i.e. acipenser] medirostris) Author: Mulligan, Helen Year: 2000, 2005 Abstract The utility of using isozyme analysis to study the stock structure among West Coast populations of green sturgeon (Acipenser medirostris) was assessed. Isozyme analysis was not determined to be an adequate method for assessing stock structure in green sturgeon for the following reasons: 1) the complex nature of isozyme expression 2) the relatively poor resolution of enzyme systems for our samples 3) the invasive nature of collecting tissue samples for isozyme analysis, which necessitates sacrificing the fish, precludes collection of samples from some rivers. The stomach contents of 23 green sturgeon collected from fish harvested in the Klamath River were analyzed. Only four stomachs contained identifiable food items, with the others containing food far too digested for identification, gravel, or no contents. Two stomachs contained the small gastropod, Olivellapyna, one stomach contained the carapace remains of a female Dungeness crab, Cancer magister, and one stomach contained the posterior portions of three ammocoetes, Lampetra tridentata. Preliminary analysis was conducted using mtDNA to assess the potential of using this technique for assessing the stock structure of green sturgeon. Although the Klamath River Fishery Restoration Program did not fund this analysis, the results are presented because this work was designed to yield complementary information to the isozyme study. No diagnostic differences were detected between samples collected from the Klamath River and the Columbia River estuary using Restriction Fragment Length Polymorphism analysis. Study results indicated that microsateliite DNA analyst might be the most appropriate current genetic technique for assessing the population structure of green sturgeon.

16259. [Image] The Water Report - Klamath update water purchase / release


	Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
	Citation Citation Citation Abstract Copy Title: The Water Report - Klamath update water purchase / release Author: Envirotech Publications Year: 2004, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/ Title: The Water Report - Klamath update water purchase / release Author: Envirotech Publications Year: 2004, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/

16260. [Image] Conservation plan, Miller Lake lamprey, Lampetra (Entosphenus) minima : April, 2005


	Public Review Draft 4- 27- 05 Conservation Plan Miller Lake Lamprey, Lampetra ( Entosphenus) minima April, 2005 Executive summary - The Miller Lake Lamprey was believed extinct after a chemical treatment in ...
	Citation Citation Citation Abstract Copy Title: Conservation plan, Miller Lake lamprey, Lampetra (Entosphenus) minima : April, 2005 Author: U.S. Fish and Wildlife Service Year: 2005 Public Review Draft 4- 27- 05 Conservation Plan Miller Lake Lamprey, Lampetra ( Entosphenus) minima April, 2005 Executive summary - The Miller Lake Lamprey was believed extinct after a chemical treatment in 1958, targeting lamprey and tui chub, extirpated both from Miller Lake. The lamprey population was later recognized to be a distinct species, Lampetra minima ( Bond and Kan 1973). It was the smallest lamprey species in the world ( maturing at less than 4 in), and at that time was known only from Miller Lake, where it was extinct In 1992, a small lamprey caught in the Upper Williamson River was identified as a Miller Lake Lamprey, and subsequent investigations have identified six local populations of this lamprey in two small subdrainages of the Upper Klamath Basin. Management strategies to preserve this species include: conserving appropriate habitat conditions and availability within the natural range of the Miller Lake Lamprey, addressing potential impacts from stocking streams with hatchery fish, reducing entrainment, and establishing connectivity within and between local populations. A man- made barrier built in 1959 still exists on Miller Creek. Originally created to prevent the re- establishment of lamprey in Miller Lake after the chemical treatment, the barrier currently prevents natural dispersal of the Miller Creek population and re- colonization of both extensive habitat in upper Miller Creek and Miller Lake itself. Removal of the barrier, which is in disrepair but continues to exclude lamprey, is feasible and will eliminate the only man- made feature obstructing natural connectivity within the Miller Lake drainage, the species' type locality. This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake Lamprey. Introduction lhe Miller Lake Lamprey, Lampetra { Entosphenus) minima, is the worlds smallest predatory lamprey, reaching a size of only 3- 6", and is endemic to the Klamath Basin ( Bond and Kan 1973, Gill et al. 2003, Lorion et al. 2000). It is also one of the few species to have " recovered" from extinction. Miller Lake was chemically treated with toxaphene by the Oregon Game Commission on September 16,1958 to eliminate Tui Chub ( Siphateles bicolor) and a population of unidentified lamprey ( Gerlach 1958, Gerlach and Borovicka 1964). The lamprey in Miller Lake was later discovered to have been a unique species, apparently restricted in range to the Miller Lake drainage ( a small, disjunct tributary to the Upper Williamson River), and was scientifically described by Bond and Kan ( 1973) fifteen years subsequent to its presumed extirpation. Public Review Draft 4- 27- 05 Although there appear to be no immediate threats to the Miller Lake Lamprey ( Kostow 2002), the species is of considerable conservation concern due to: 1) its relatively limited range in two small sub drainages of the Klamath Basin, 2) its continued absence in the ecologically unique setting of Miller Lake ( type locality) and 3) its evolutionary distinctiveness as the smallest known predatory lamprey in the world, maturing at less than four inches. Life History Distribution - The Miller Lake Lamprey is currently known from only two small sub- drainages of the Upper Klamath Basin, the upper Williamson River and the upper Sycan River above Sycan Marsh ( Lorion et al. 2000). The upper Williamson River contains four known populations ( Miller Creek, Jack Creek, Klamath Marsh, and mainstem Williamson River above the marsh). Miller Creek, which drains Miller Lake, is within the upper Williamson Watershed, but it goes sub- surface in the pumice soils and does not reach the Klamath Marsh or Williamson River. Miller Lake has presumably been isolated from the rest of the drainage since the eruption of Mt. Mazama ( Crater Lake) over 6,000 years ago. Jack Creek, a small northern tributary to the upper Williamson River, is also generally disjunct from the mainstem Williamson River due to low, intermittent surface flows in its lower reaches. The Upper Sycan drainage ( a northern tributary of the Sprague River) contains two principal populations, Long Creek drainage and the upper Sycan River drainage above Sycan Marsh. Lamprey have been documented in Coyote Creek and Shake Creek above Sycan Marsh by Nature Conservancy. Lamprey in Shake Creek have not been identified to species. Geographic Variability - In general, individuals from the modern Williamson and Sycan sub-drainages are morphologically similar ( Lorion et al. 2000). However, there are indications of geographic differences between populations. The Sycan populations exhibit significantly higher variability in the number of bicuspid posterial teeth, and the Miller Creek population generally tend to be darker on their ventral surface. Specimens from the original Miller Lake population ( pre- 1958) had, on average, fewer anterial teeth. They also tended to have larger eyes and oral disks relative to total length when compared to modern populations; however, this appears to be due to their slightly smaller size. The available genetic information also indicates that there are geographic differences in the mitochondrial genome ( mtDNA) between Sycan ( Sprague) and Williamson lamprey populations, with one haplotype found only in the Upper Sycan and another limited to lamprey populations in the Sprague River drainage ( Lorion et al. 2000). Continued genetic work on the Klamath lamprey fauna, examining additional genes, indicates that the population of lamprey in Miller Creek may be genetically different than both the other upper Williamson and Sycan populations ( Docker pers. com. 2004). Habitat - Miller Lake Lampreys currently occupy relatively cool, clear streams ( Gunckel and Reid 2004, Kan and Bond 1981, Lorion et al. 2000, Reid pers. com. 2004). Adults are generally associated with structural cover, including loose rocks and woody debris. In lower Miller Creek, where rocky habitat is limited, adult lampreys were consistently found in woody debris jams and even under seat boards from an old outhouse that had fallen into the creek ( Reid pers. obs. 1998). Ammocoetes ( a larval stage lasting about 5 years) live in the substrate and are generally Public Review Draft 4- 27- 05 associated with depositional environments. In streams, ammocoetes are frequently found in silty backwater areas, low energy stream edges, and in pool eddies where leaf litter and other organics ( including adult lamprey carcasses) tend to accumulate. At night ammocoetes may move into the water column to disperse downstream or into more favorable habitat. In Miller Lake ammocoetes were found in organic detritus all along the shoreline but rarely in the extremely cold tributaries flowing into the lake ( Kan and Bond 1981). Recent extensive collections of Pacific Lamprey ammocoetes along the coast indicate that ammocoetes do not occupy otherwise apparently suitable sediments if the upper layer is poorly oxygenated ( Reid and Goodman pers. obs. 2004). Reproduction - Miller Lake Lampreys spawn in shallow redds in clean gravels and sand, which are moved out of the redd by lamprey sucking onto small rocks and actively moving them out of the way ( Markle pers. com. 2004, Reid pers. com. 2004). In streams, redds are generally made in shallow water, often at the tail of a pool or run, and are roughly 10 cm in diameter and a few centimeters deep. In Miller Lake, lampreys were observed spawning in water as deep as 20 feet ( Cochrun 1951b, Kan and Bond 1981). Males attach to the female's head and wrap around her body, aligning genitals and allowing fertilization of the eggs as they emerge. Eggs are heavier than water and are mixed into the bottom of the redd by spawning actions. Kan and Bond ( 1981) found that female lampreys from Miller Lake contained an average of about 600 eggs. Time to hatching is not known, but is probably on the order of a few weeks. Larvae ( ammocoetes) emerge at about 8 mm and move into fine sediments. Adults die after spawning. Feeding - Miller Lake Lampreys feed on fish only as adults. Ammocoetes have no eyes or teeth and are purely filter feeders, burrowing in the sediment and feeding on suspended microorganisms and algae. The ammocoete phase lasts about five years, during which time the ammocoetes grow to around 150 mm. After transformation, adults enter a predatory phase before spawning that generally lasts for less than a year ( from transformation in the summer/ fall to spawning in summer of the following year). Adults feed primarily on flesh that is gouged and rasped out of a small wound (<= 11 mm) under the sucking disk ( Cochran 1994, Kan and Bond 1981). Adults apparently show little selectivity for prey. The adult lampreys in Miller Lake historically fed on both tui chubs and available salmonids ( rainbow, brook and juvenile brown trout) in Miller Lake ( Kan and Bond 1981). They also scavenged dead tui chubs and trout, as well as cannibalizing other lampreys. In Miller Creek, most recent observations found occasional lamprey wounds on brook trout, which were the most abundant species in the creek, but it is probable that lampreys also feed on both rainbows and young brown trout in the creek ( S. Reid pers. obs. 1998). In Jack Creek lampreys feed on speckled dace, the only other fish present in the stream, and in the Upper Sycan they feed on both trout and dace. Unlike other predatory lampreys, but similar to non- feeding brook lampreys, adult Miller Lake Lampreys loose body length and mass between the time they transform and actual spawning, indicating that energetic needs and gonadal development are not compensated for by the amount of food they consume ( Hubbs 1971, Kan and Bond 1981, Lorion et al. 2000). Lamprey / Trout Interaction - Although there have been no direct studies of the ecological interaction between lampreys and trout in the Klamath Basin, it is notable that healthy trout and lamprey populations coexist throughout the basin. Lampreys certainly prey on trout, and both adult lampreys and ammocoetes may represent a significant food resource to piscivorous adult Public Review Draft 4- 27- 05 trout. Native redband trout co- exist with much larger predatory lampreys (" Klamath Lake Lamprey", Lampetra { Entosphenus) sp., and Klamath River Lamprey, L. ( E.) similis) in Upper Klamath Lake. A large percentage of the trophy redband trout in Upper Klamath Lake, as well as both redband and brown trout in the Wood and Williamson Rivers, exhibit recent or healed lamprey scars. In smaller streams where Miller Lake Lampreys ( length 3- 6 in) co- exist with native and introduced trout ( redband, bull, brook and brown trout), there appears to be little impact to adult trout, and local fishermen are rarely even aware of the presence of the lamprey ( S. Reid, pers. comm. 2004, R. Smith, pers. comm. 2004). Surveys by USFWS and USFS in 1998- 1999 found that very few of the trout in Miller Creek, the Williamson or upper Sycan Rivers had scars, and during extensive snorkeling surveys, only a few trout were actually observed with lampreys attached ( S. Reid USFWS pers. com., 2004). Historical reports from Miller Lake prior to the extirpation of lampreys indicate that tui chubs were the principal prey, and dead tui chubs were often reported ( Cochrun 1951a, b, Gerlach 1958, Kan 1975, Kan and Bond 1981). Some cannibalism on other lampreys, as well as scavenging of dead fish carcasses, was also observed ( Kan and Bond 1981). Specific mortality of adult trout was not reported, although large trout were noted to have collections of scars and some mortality of fingerlings was observed. Recent observations of occasional fingerling trout mortality and much more frequent lethal predation on speckled dace (< 10 cm TL) in the Sycan River and Jack Creek, as well as the observation of apparently healthy adult trout with healed wounds, suggests that lethal predation on trout is generally limited to fingerlings ( Markle pers. com. 2004, Reid pers. com. 2004, Smith pers. com. 2004). It is not believed that predation on Miller Lake lamprey by piscivorous adult trout has been a threat to the sustainability of lamprey populations. These populations have co- evolved with native trout and appear to be productive enough to withstand some level of predation. The Jack Creek population is an exception. Jack Creek is believed to only support populations of Miller Lake lamprey and speckled dace. Since this lamprey population evolved absent predation from trout, there is a concern that an introduction of piscivorous adult trout could upset the ecological balance in Jack Creek and present a threat to both the lamprey and dace populations. For this reason, stocking of hatchery fish is prohibited by rule in Jack Creek or other streams containing Miller Lake lamprey. Miller Lake Fisheries - Miller Lake currently supports a recreational trout fishery of entirely introduced species. Miller Lake's one notable native species, the Miller Lake Lamprey, was thought extinct when the Oregon Department of Fish and Wildlife Commission approved the current Klamath Basin Fish Management Plan ( ODFW 1997). Today, Miller Lake provides a popular " catchable" and fingerling rainbow trout program, a trophy brown trout fishery, and an under- utilized kokanee population of small- sized individuals ( Smith pers. com. 2004). Due to the role of Miller Lake as a recreational fishery and concerns over the potential impact of lampreys on introduced trout populations in the lake, the history and status of Miller Lake fisheries are summarized below by species. Rainbow trout fingerlings ( 2- 4 inches) were planted in Miller Lake until 1948, when stocking was discontinued due to poor returns. At that time, the poor rainbow fishery was believed to have been due to lamprey predation and competition with resident tui chubs ( Cochrun 1950, Public Review Draft 4- 27- 05 1951a). However, based on the reported poor performance of stocked fingerling rainbows post-treatment ( see below), without either lampreys or tui chubs, it appears that local habitat conditions, and not trophic competition with tui chub or parasitism by lamprey, were driving the poor rainbow population dynamics. Recent observations by ODFW biologists have indicated that while the rainbow trout in Miller Lake are surviving, growing and being harvested by anglers, survival and growth have been, at best, marginal ( Smith pers. com. 2004). Trapnet samples in Miller Lake have been very inefficient at capturing older age class rainbow trout so the average size of sampled trout is not representative of the fish that are available for angler harvest. While trapnet sets typically made in the fall are not particularly good indicators of the rainbow population in Miller Lake, Trapnet sampling of rainbow trout documented an average length of approximately 8 inches in 1988 and approximately 4 inches in 1997. The release of catchable- sized rainbow trout into Miller Lake was initiated in 2001 to supplement the ongoing fingerling stocking program. Brown trout were first introduced into Miller Lake in 1981 and have been stocked annually since. Although small numbers may have been present prior to treatment. Survival and growth of brown trout has been excellent ( Smith pers. com. 2004). Brown trout averaged approximately 17 inches in length in 1998 and approximately 16 inches in 2001. Larger fish captured in trap net sets exceed 10 pounds. Miller Lake was identified by sport- fishing author Denny Rickards as one of the top ten brown trout producing lakes in the western United States. Lampreys themselves, as well as their impaired prey, might in turn serve as additional prey for the large, highly piscivorous brown trout. Stocks of kokanee were introduced to Miller Lake from several states between 1964 and 1971 ( all post- treatment). Kokanee have been very successful reproducing and stocking has not been necessary since 1971. The average size of maturing adults have remained relatively small. Miller Lake is an oligotrophic lake with very low productivity ( Johnson et al. 1985). The length of maturing female kokanee ranged between 7.5- 10 inches between 1965 tol972, and the average size of kokanee females in 2001 was approximately 8 inches. Based on the relatively small length of maturing kokanee females, it appears that environmental conditions or interspecific competition with other trout are driving the kokanee population dynamics. Brook trout were stocked in Miller Lake from the 1930' s until 1948. Brook trout were present in Miller Creek and apparently survived in tributaries during the 1958 treatment, since seven brook trout ( 6- 14 in) were gill- netted from the lake in 1964, prior to introduction of 85,000 kokanee and 150,000 rainbow fingerlings. No brook trout are currently stocked into the lake or tributaries of the lake. A healthy self- sustaining population of brook trout is currently present in Miller Creek, below the lamprey barrier, where they have apparently coexisted with lampreys since both recovered from the 1958 treatment. Tui chubs were present in Miller Lake prior to the 1958 treatment. It is not known whether tui chub were a native or introduced population. However, based on the elevation and atypical tui chub habitat in the lake, it is believed to have been an un- authorized introduction, most probably as a baitfish. Trophic competition between tui chub and rainbow trout has been consistently demonstrated in several Oregon lakes, including Diamond Lake in Douglas County. Tui chub or " roach" problems in Miller Lake were identified by Ken Cochrun ( Fisheries Agent, Oregon State Public Review Draft 4- 27- 05 game Comm.) in his 1950 and 1951 annual reports ( Cochrun 1950, 1951a). However, Mr. Cochrun felt that the " large population" of tui chub would be relatively easy to control compared to the lamprey and hence the need for the radical chemical treatment with toxaphene, which would eliminate both species, rather than rotenone, which would have limited effect on the lamprey ammocoetes in the substrate. In the 1950' s, as is still the case, considerable amount of time was expended by fishery districts controlling tui chub (" roach"), as noted in Mr. Cochrun's annual reports. Tui chubs were never restocked after the treatment and are no longer present in the Miller Lake drainage. One of the goals of this conservation plan for the Miller Lake Lamprey is to re- establish a lamprey population in Miller Lake itself. Historical reports from Miller Lake prior to the extirpation of lampreys nowhere mention specific mortality of adult trout, even when lamprey were abundant, although large trout were noted to have collections of scars ( see above - Lamprey/ Trout Interaction). Based on historical accounts and recent observations from the Upper Sycan drainages, mortality when observed has been on small fish (< 10cm TL). Observations from Miller Lake in the past and recent observations of trophy redband trout fisheries in Upper Klamath Lake indicate that little to no effect is experienced by the fish based on the occurrence of healed lamprey scars. Self- sustaining populations of brown and brook trout ( unstocked) currently coexist with lampreys in Miller Creek below the lamprey barrier. Were lamprey to become reestablished in Miller Lake, they would probably feed primarily on juvenile kokanee, which are abundant in the lake. Although lamprey predation on adult trout may result in some stress and condition loss, the principal effect on adult kokanee and trout fisheries in Miller Lake is likely to be aesthetic, with small round wounds (< l/ 2 in), or scars, on the side of fish. Future Recreational Fish Management The recreational trout and kokanee salmon fisheries in Miller Lake are an extremely valuable fish resource to local community and anglers. All efforts will be made by the Oregon Department of Fish and Wildlife to continue to offer angling recreation at current harvestable levels. In the unlikely event that the re- establishment of the Miller Lake lamprey adversely impacts the trout and kokanee population abundance, then additional fish stocking or other compatible management actions will be initiated as necessary to meet recreational fishery management objectives. Conservation Plan Note: Underlined, bold text in italics represents those portions of the conservation plan that are proposed to be adopted into Oregon Administrative Rule by the Oregon Fish and Wildlife Commission. Purpose This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake lamprey, Lampetra ( Entosphenus) minima. This is the first step in securing populations that currently exist in the Klamath Basin and in Public Review Draft 4- 27- 05 determining their status, abundance, distribution, and life history needs. As new information on the lamprey becomes available it is expected that this document will be modified and updated to reflect the current state of our knowledge. Species Management Unit and Population Description The Miller Lake Lamprey species management unit is comprised of six documented populations and one uncertain population. They are: • Mainstem Upper Williamson River above Klamath Marsh • Miller Creek • Jack Creek • Sycan River above Sycan Marsh • Long Creek • Coyote Creek • Shake Creek ( lamprey present have not been identified to species) Desired Status The desired status of the Miller Lake lamprey is for the species to be distributed widely throughout its historic range, with populations robust enough to withstand stochastic environmental events, and with both the populations and their habitat secure from anthropogenic threats. Current Status The Miller Lake Lamprey is endemic to the Klamath Basin and was recently re- described ( Lorion et al 2000). It is currently known from two sub- drainages. The Williamson River sub- drainage includes populations in Miller Creek, Jack Creek, Klamath Marsh and the mainstem upper Williamson River. In the Sycan sub- drainage the lamprey exists in Long Creek and in the upper Sycan River above the Sycan Marsh. Information regarding the abundance and population structure of Miller Lake lamprey in these systems is not available, and only anecdotal information is available for the life history or habitat requirements of the species. For detailed information on the current information available for the species see Life History section. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier to connectivity between Miller Creek and Miller Lake. Public Review Draft 4- 27- 05 Management Strategies The short- and long- term management strategies for the Miller Lake Lamprey species management unit are: Short- term Strategy a) Re- establish connectivity to Miller Lake. Long- term Strategies b) Ensure appropriate habitat conditions and availability within the natural range of Miller Lake lamprey. c) Reduce entrainment or the potential for entrainment of adult and larval lampreys into water diversions. d) Reduce stranding or the potential for stranding of larval lampreys in dewatered segments of streams below water diversions. e) Maintain unobstructed opportunities, within and among populations for genetic exchange, natural dispersal or migration activities, and re- colonization of unoccupied portions of historical habitat. f) No hatchery fish shall be stocked in streams that support Miller Lake lamprey. Management strategies are those general conditions relevant to the conservation of the species that are considered essential to ensure its long- term survival within its natural range. Although there are many aspects of a species life- history and management that may play a role in the species' biology, the management strategies include those aspects that are currently considered to be both essential for its long- term survival and that are potentially at risk. Conservation Actions Conservation actions are those specific activities or projects that have been identified as appropriate for the realization of the above conservation goals. General - Due to the general lack of information about the life- history, habitat requirements, and distribution of the Miller Lake Lamprey, any studies which increase our understanding of the species will contribute to future conservation planning and should be supported. Habitat - At this time, the general habitat requirements of the Miller Lake Lamprey populations in the upper Williamson and upper Sycan drainages appear to be similar to those of the native trout populations, and habitat restoration or enhancement projects that benefit the trout populations should be beneficial to the lamprey as well. However, there may be specific differences between these species that should be considered in future projects as our understanding of the lamprey's life- history increases. Public Review Draft 4- 27- 05 Entrainment - At this time there has been no evaluation of potential entrainment risks to the Miller Lake Lamprey. Unscreened or improperly screened irrigation diversions currently exist on the upper Sycan and upper Williamson River systems. Private irrigator participation into the screening program should continue to be encouraged and supported. Stranding - At this time there has been no evaluation of potential stranding risks to the Miller Lake Lamprey. Current water diversions reduce the stream flow in segments of the streams directly below the diversion point. Minimum stream flows or gradual ramping strategies should be encouraged where practicable. Connectivity - The Miller Lake Lamprey is not known to carry out extensive spawning migrations. However, due the tendency for ammocoetes to drift downstream during the multi- year larval stage, it is essential that local populations have free upstream passage opportunities during the period when adults are residing in the stream. The swimming characteristics and passage capabilities of trout ( for whom many fish ladders are designed) and lamprey are very different. Lamprey- friendly ladders or passage corridors should be encouraged in the design phase of new projects, and occupied lamprey streams should be evaluated for the presence of older fish ladders, as well as other artificial barriers. Re- establishment of the Miller Lake population - Miller Lake itself, the type locality for the species, remains the only known historical habitat from which the Miller Lake Lamprey is known to have been extirpated. It also represents both an ecologically unique habitat and a crucial component in the evolutionary legacy of the species. Following the extirpation of lampreys from Miller Lake in 1958, a lamprey barrier was constructed in Miller Creek to prevent recolonization of the lake from Miller Creek. The barrier remains in place today. Removal of this barrier should have a high priority in order to meet the conservation goals for the Miller Lake Lamprey and is discussed in more detail below. The barrier was constructed by the State of Oregon Game Commission in 1959 at the upstream extent of a short, high- gradient cascade in Miller Creek approximately 54 mile downstream from the outlet of Miller Lake and forest road 9772. It consists of a low stonework dam ( about 2 ft high) constructed of mortared native rocks, with a metal plate and lip bolted on top. The configuration is very effective as a man- made barrier to fish passage. However, the current condition of the concrete and rock structure is substantially deteriorated. A recent examination by ODFW, USFWS and USFS personnel indicates that the structure would be relatively easy to remove using hand tools without adverse instream impacts ( evaluated by R. Smith et al., September 2003). Recent baseline surveys ( August 2004) of lamprey ammocoetes in the Miller drainage indicate that they are apparently limited to less than two miles of low- gradient stream in lower Miller Creek ( Gunckel and Reid 2004). Allowing lampreys to re- establish a population above the cascade in Miller Creek and Miller Lake will aid in creating an additional buffer against stochastic events that could otherwise eradicate this geographically limited population. Additional surveys should be scheduled on a five- 10 Public Review Draft 4- 27- 05 year basis to evaluate status of the population and the success of re- colonization efforts. Removal of the barrier should allow natural expansion of the population and recolonization of the lake from the Miller Creek population, which survived the original extirpation. Information Gaps 1) Life history - very little quantitative information is available on the life history and habitat requirements of either ammocoetes or adults with which to guide management decisions. 2) Distribution - current understanding of distribution is based on surveys in the 1990' s that primarily focused on the Williamson and Sprague River drainages. Other potential areas in the Klamath Basin outside these drainages have not been properly surveyed. 3) No specific population or fine- scale distributional surveys have been undertaken for any populations outside of the Miller Lake drainage. 4) Preliminary morphological and genetic information suggests that there are regional differences between the various populations of Miller Lake Lamprey in the Klamath Basin. However, the available information is not yet sufficient for making management decisions relative to population independence or uniqueness. Strategies to Address Gaps 1) A Miller Lake Lamprey Technical Management Team has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. This team currently consists of biologists from ODFW ( Roger Smith and Stephanie Gunckel), Oregon State University ( Douglas Markle), the Western Lamprey Project ( Stewart Reid), and the Great Lakes Inst. Environmental Research ( Margaret Docker - lamprey genetics). 2) ODFW will, where appropriate, incorporate lampreys into their fish survey protocols in the Klamath Basin and will seek to collaborate with other researchers carrying out lamprey surveys in the Basin. 3) ODFW and the Miller Lake Lamprey Technical Management Team will promote the investigation of morphological and genetic information informative to resolving regional differences between the various populations of Miller Lake Lamprey. 11 Public Review Draft 4- 27- 05 Research, Monitoring and Evaluation Research Promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the Monitoring Where appropriate, incorporate lampreys into fish survey protocols in the Klamath Basin and seek to collaborate with other researchers carrying out lamprey surveys in the Basin. Evaluation Periodically evaluate the status of Miller Lake lamprey and the success of the conservation plan management strategies. Research - Due to the paucity of available quantitative information on the distribution, life history, habitat requirements of either ammocoetes or adults, ODFW will promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the species. Monitoring - ODFW, in collaboration with USFWS, has documented baseline distribution of the fish in Miller Creek with the lamprey barrier in place ( Gunckel and Reid 2004). Monitoring of the population will continue to evaluate upstream movement, distribution, abundance, and re- colonization of the lake through the cooperative effort of ODFW and the Miller Lake Lamprey Technical Management Team. The ODFW and the Technical Management Team, will meet and discuss progress after the barrier has been removed, and the lampreys have had unobstructed passage to Miller Lake for five years. Adaptive Management a) A Miller Lake Lamprey Technical Management Team shall be formed. b) The Miller Lake Lamprey Technical Management Team shall meet periodically to review the success of the management actions identified in the Miller Lake Lamprey Conservation Plan and identify modifications to management actions that are needed to achieve the desired status for Miller Lake lamprey. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier in Miller Creek. The Miller Lake Lamprey Technical Management Team ( see under Strategies to Address Gaps) has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. The team will meet periodically to evaluate current status and management strategies in light of new information. 12 Public Review Draft 4- 27- 05 Current management action is proposed for removal of the Miller Creek Barrier. The lamprey population in Miller Creek will continue to be monitored by ODFW following the 2004 baseline surveys. After five years the Miller Lake Lamprey Technical Management Team will evaluate the status of the Miller Creek population and the success of natural re- colonization of Miller Lake. If sufficient progress has not been made, then discussions regarding active re- introduction of lampreys to the lake will be initiated. Trigger for Plan Modification Substantial negative changes in the distribution or abundance of the Miller Lake lamprey, or the recognition of new threats to the species, shall prompt a review of the species management unit's status and all Miller Lake Lamprey Conservation Plan management strategies by the Miller Lake Lamprey Technical Management Team. Appropriate modifications to the Miller Lake Lamprey Conservation Plan intended to better achieve the desired status identified in the Plan shall be proposed by the Miller Lake Lamprey Technical Management Team. Reporting a) The Miller Lake Lamprey Technical Management Team shall periodically report on the status of Miller Lake lamprey and the effectiveness of the management strategies identified in the Miller lake Lamprey Conservation Plan. b) Annual Miller Lake Lamprey data collected and any reports on the status of Miller Lake Lamprey or evaluations of the Miller Lake Lamprey Conservation Plan shall be made available to the public. The staff of the ODFW's Klamath Watershed District and Native Fish Research Project will periodically report monitoring and research results through native fish conservation strategy stock status reviews. 13 Public Review Draft 4- 27- 05 Citations Bond, C. E. and T. T. Kan. 1973. Lampetra ( Entosphenus) minima n. sp., a dwarfed parasitic lamprey from Oregon. Copeia 1973: 568- 574. Cochran, P. A. and R. E. Jenkins. 1994. Small fishes as hosts for parasitic lampreys. Copeia 1994: 499- 504. Cochrun, K. 1950. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951a. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951b. Letter to Dr. HJ. Rayner, Chief of Fisheries Operations, Oregon State Game Commission. 4 November 1951. Gerlach, A. 1958. Rehabilitation of Miller Lake, 1958. Report to files - Fishery Division, Central Region, Klamath District. Oregon State Game Commision. Gerlach, A. 1959. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Gerlach, A. and R. Borovicka. 1964. State- wide fishery rehabilitation: Miller Lake and tributaries segment ( Completion Report F- 20- D- 11). Oregon State Game Commission. Gill, H. S., C. B. Renaud, F. Chapleau, R. L. Mayden and I. C. Potter. 2003. Phylogeny of living parasitic lampreys ( Petromyzontiformes) based on morphological data. Copeia 2003: 687- 703. Gunckel S. and S. Reid. 2004. Baseline survey of Miller Lake Lamprey ( Entosphenus minimus) ammocoete distribution in the Miller Lake subdrainage. Oregon Dept. Fish and Wildlife. Hubbs, C. L. 1971. Lampetra ( Entosphenus) lethophaga, new species, the nonparasitic derivative of the Pacific lamprey. Trans. San Diego Soc. Nat. Hist. 16: 125- 164. Johnson, D. M., R. R. Peterson, D. R. Lycan, J. W. Sweet, M. E. Neuhaus and A. L. Schaedel. 1985. Miller Lake In Atlas of Oregon Lakes. Oregon State Univ. Press. Corvallis, Oregon. Kan, T. T. 1975. Systematics, variation, distribution, and biology of lampreys of the genus Lampetra in Oregon. Doctoral Dissertation, Oregon State Univ., Corvallis, Oregon. Kan, T. T. and C. E. Bond. 1981. Notes on the biology of the Miller Lake lamprey Lampetra { Entosphenus) minima. Northwest Sci. 55: 70- 74. 14 Public Review Draft 4- 27- 05 Kostow, K. 2002. Oregon lampreys: natural history, status and analysis of management issues. Info. Rept. 2002- 01, Fish Division, Oregon Dept. Fish and Wildlife. Lorion, CM., D. F. Markle, S. B. Reid and M. F. Docker. 2000. Redescription of the presumed-extinct Miller Lake Lamprey, Lampetra minima. Copeia 2000: 1019- 1028. Oregon Dept. Fish and Wildlife. 1997. Klamath River Basin, Oregon - Fish Management Plan, August 22, 1997. Personal Communications Docker, Margaret F. - Great Lakes Inst. Environmental Research, Univ. Windsor; 401 Sunset Ave, Windsor, ON N9B 3P4 Goodman, Damon - Fisheries Biology, Humboldt State Univ.; 1 Harpst Street, Arcata, CA 95521- 8299 Markle, Doug F. - Dept. Fisheries and Wildlife, Oregon State Univ.; 104 Nash Hall, Oregon State Univ., Corvallis, OR 97331- 3803 Reid, Stewart B. - U. S. Fish and Wildlife Service, Endangered Species Division; 6610 Washburn Way, Klamath Falls, OR 97603; Current address - Western Fishes, 2045 East Main, Ashland OR 97520 Smith, Roger C. - District Fish Biologist, Oregon Dept. Fish and Wildlife; 1850 Miller Island Road West, Klamath Falls, OR 97603 15 Title: Conservation plan, Miller Lake lamprey, Lampetra (Entosphenus) minima : April, 2005 Author: U.S. Fish and Wildlife Service Year: 2005 Public Review Draft 4- 27- 05 Conservation Plan Miller Lake Lamprey, Lampetra ( Entosphenus) minima April, 2005 Executive summary - The Miller Lake Lamprey was believed extinct after a chemical treatment in 1958, targeting lamprey and tui chub, extirpated both from Miller Lake. The lamprey population was later recognized to be a distinct species, Lampetra minima ( Bond and Kan 1973). It was the smallest lamprey species in the world ( maturing at less than 4 in), and at that time was known only from Miller Lake, where it was extinct In 1992, a small lamprey caught in the Upper Williamson River was identified as a Miller Lake Lamprey, and subsequent investigations have identified six local populations of this lamprey in two small subdrainages of the Upper Klamath Basin. Management strategies to preserve this species include: conserving appropriate habitat conditions and availability within the natural range of the Miller Lake Lamprey, addressing potential impacts from stocking streams with hatchery fish, reducing entrainment, and establishing connectivity within and between local populations. A man- made barrier built in 1959 still exists on Miller Creek. Originally created to prevent the re- establishment of lamprey in Miller Lake after the chemical treatment, the barrier currently prevents natural dispersal of the Miller Creek population and re- colonization of both extensive habitat in upper Miller Creek and Miller Lake itself. Removal of the barrier, which is in disrepair but continues to exclude lamprey, is feasible and will eliminate the only man- made feature obstructing natural connectivity within the Miller Lake drainage, the species' type locality. This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake Lamprey. Introduction lhe Miller Lake Lamprey, Lampetra { Entosphenus) minima, is the worlds smallest predatory lamprey, reaching a size of only 3- 6", and is endemic to the Klamath Basin ( Bond and Kan 1973, Gill et al. 2003, Lorion et al. 2000). It is also one of the few species to have " recovered" from extinction. Miller Lake was chemically treated with toxaphene by the Oregon Game Commission on September 16,1958 to eliminate Tui Chub ( Siphateles bicolor) and a population of unidentified lamprey ( Gerlach 1958, Gerlach and Borovicka 1964). The lamprey in Miller Lake was later discovered to have been a unique species, apparently restricted in range to the Miller Lake drainage ( a small, disjunct tributary to the Upper Williamson River), and was scientifically described by Bond and Kan ( 1973) fifteen years subsequent to its presumed extirpation. Public Review Draft 4- 27- 05 Although there appear to be no immediate threats to the Miller Lake Lamprey ( Kostow 2002), the species is of considerable conservation concern due to: 1) its relatively limited range in two small sub drainages of the Klamath Basin, 2) its continued absence in the ecologically unique setting of Miller Lake ( type locality) and 3) its evolutionary distinctiveness as the smallest known predatory lamprey in the world, maturing at less than four inches. Life History Distribution - The Miller Lake Lamprey is currently known from only two small sub- drainages of the Upper Klamath Basin, the upper Williamson River and the upper Sycan River above Sycan Marsh ( Lorion et al. 2000). The upper Williamson River contains four known populations ( Miller Creek, Jack Creek, Klamath Marsh, and mainstem Williamson River above the marsh). Miller Creek, which drains Miller Lake, is within the upper Williamson Watershed, but it goes sub- surface in the pumice soils and does not reach the Klamath Marsh or Williamson River. Miller Lake has presumably been isolated from the rest of the drainage since the eruption of Mt. Mazama ( Crater Lake) over 6,000 years ago. Jack Creek, a small northern tributary to the upper Williamson River, is also generally disjunct from the mainstem Williamson River due to low, intermittent surface flows in its lower reaches. The Upper Sycan drainage ( a northern tributary of the Sprague River) contains two principal populations, Long Creek drainage and the upper Sycan River drainage above Sycan Marsh. Lamprey have been documented in Coyote Creek and Shake Creek above Sycan Marsh by Nature Conservancy. Lamprey in Shake Creek have not been identified to species. Geographic Variability - In general, individuals from the modern Williamson and Sycan sub-drainages are morphologically similar ( Lorion et al. 2000). However, there are indications of geographic differences between populations. The Sycan populations exhibit significantly higher variability in the number of bicuspid posterial teeth, and the Miller Creek population generally tend to be darker on their ventral surface. Specimens from the original Miller Lake population ( pre- 1958) had, on average, fewer anterial teeth. They also tended to have larger eyes and oral disks relative to total length when compared to modern populations; however, this appears to be due to their slightly smaller size. The available genetic information also indicates that there are geographic differences in the mitochondrial genome ( mtDNA) between Sycan ( Sprague) and Williamson lamprey populations, with one haplotype found only in the Upper Sycan and another limited to lamprey populations in the Sprague River drainage ( Lorion et al. 2000). Continued genetic work on the Klamath lamprey fauna, examining additional genes, indicates that the population of lamprey in Miller Creek may be genetically different than both the other upper Williamson and Sycan populations ( Docker pers. com. 2004). Habitat - Miller Lake Lampreys currently occupy relatively cool, clear streams ( Gunckel and Reid 2004, Kan and Bond 1981, Lorion et al. 2000, Reid pers. com. 2004). Adults are generally associated with structural cover, including loose rocks and woody debris. In lower Miller Creek, where rocky habitat is limited, adult lampreys were consistently found in woody debris jams and even under seat boards from an old outhouse that had fallen into the creek ( Reid pers. obs. 1998). Ammocoetes ( a larval stage lasting about 5 years) live in the substrate and are generally Public Review Draft 4- 27- 05 associated with depositional environments. In streams, ammocoetes are frequently found in silty backwater areas, low energy stream edges, and in pool eddies where leaf litter and other organics ( including adult lamprey carcasses) tend to accumulate. At night ammocoetes may move into the water column to disperse downstream or into more favorable habitat. In Miller Lake ammocoetes were found in organic detritus all along the shoreline but rarely in the extremely cold tributaries flowing into the lake ( Kan and Bond 1981). Recent extensive collections of Pacific Lamprey ammocoetes along the coast indicate that ammocoetes do not occupy otherwise apparently suitable sediments if the upper layer is poorly oxygenated ( Reid and Goodman pers. obs. 2004). Reproduction - Miller Lake Lampreys spawn in shallow redds in clean gravels and sand, which are moved out of the redd by lamprey sucking onto small rocks and actively moving them out of the way ( Markle pers. com. 2004, Reid pers. com. 2004). In streams, redds are generally made in shallow water, often at the tail of a pool or run, and are roughly 10 cm in diameter and a few centimeters deep. In Miller Lake, lampreys were observed spawning in water as deep as 20 feet ( Cochrun 1951b, Kan and Bond 1981). Males attach to the female's head and wrap around her body, aligning genitals and allowing fertilization of the eggs as they emerge. Eggs are heavier than water and are mixed into the bottom of the redd by spawning actions. Kan and Bond ( 1981) found that female lampreys from Miller Lake contained an average of about 600 eggs. Time to hatching is not known, but is probably on the order of a few weeks. Larvae ( ammocoetes) emerge at about 8 mm and move into fine sediments. Adults die after spawning. Feeding - Miller Lake Lampreys feed on fish only as adults. Ammocoetes have no eyes or teeth and are purely filter feeders, burrowing in the sediment and feeding on suspended microorganisms and algae. The ammocoete phase lasts about five years, during which time the ammocoetes grow to around 150 mm. After transformation, adults enter a predatory phase before spawning that generally lasts for less than a year ( from transformation in the summer/ fall to spawning in summer of the following year). Adults feed primarily on flesh that is gouged and rasped out of a small wound (<= 11 mm) under the sucking disk ( Cochran 1994, Kan and Bond 1981). Adults apparently show little selectivity for prey. The adult lampreys in Miller Lake historically fed on both tui chubs and available salmonids ( rainbow, brook and juvenile brown trout) in Miller Lake ( Kan and Bond 1981). They also scavenged dead tui chubs and trout, as well as cannibalizing other lampreys. In Miller Creek, most recent observations found occasional lamprey wounds on brook trout, which were the most abundant species in the creek, but it is probable that lampreys also feed on both rainbows and young brown trout in the creek ( S. Reid pers. obs. 1998). In Jack Creek lampreys feed on speckled dace, the only other fish present in the stream, and in the Upper Sycan they feed on both trout and dace. Unlike other predatory lampreys, but similar to non- feeding brook lampreys, adult Miller Lake Lampreys loose body length and mass between the time they transform and actual spawning, indicating that energetic needs and gonadal development are not compensated for by the amount of food they consume ( Hubbs 1971, Kan and Bond 1981, Lorion et al. 2000). Lamprey / Trout Interaction - Although there have been no direct studies of the ecological interaction between lampreys and trout in the Klamath Basin, it is notable that healthy trout and lamprey populations coexist throughout the basin. Lampreys certainly prey on trout, and both adult lampreys and ammocoetes may represent a significant food resource to piscivorous adult Public Review Draft 4- 27- 05 trout. Native redband trout co- exist with much larger predatory lampreys (" Klamath Lake Lamprey", Lampetra { Entosphenus) sp., and Klamath River Lamprey, L. ( E.) similis) in Upper Klamath Lake. A large percentage of the trophy redband trout in Upper Klamath Lake, as well as both redband and brown trout in the Wood and Williamson Rivers, exhibit recent or healed lamprey scars. In smaller streams where Miller Lake Lampreys ( length 3- 6 in) co- exist with native and introduced trout ( redband, bull, brook and brown trout), there appears to be little impact to adult trout, and local fishermen are rarely even aware of the presence of the lamprey ( S. Reid, pers. comm. 2004, R. Smith, pers. comm. 2004). Surveys by USFWS and USFS in 1998- 1999 found that very few of the trout in Miller Creek, the Williamson or upper Sycan Rivers had scars, and during extensive snorkeling surveys, only a few trout were actually observed with lampreys attached ( S. Reid USFWS pers. com., 2004). Historical reports from Miller Lake prior to the extirpation of lampreys indicate that tui chubs were the principal prey, and dead tui chubs were often reported ( Cochrun 1951a, b, Gerlach 1958, Kan 1975, Kan and Bond 1981). Some cannibalism on other lampreys, as well as scavenging of dead fish carcasses, was also observed ( Kan and Bond 1981). Specific mortality of adult trout was not reported, although large trout were noted to have collections of scars and some mortality of fingerlings was observed. Recent observations of occasional fingerling trout mortality and much more frequent lethal predation on speckled dace (< 10 cm TL) in the Sycan River and Jack Creek, as well as the observation of apparently healthy adult trout with healed wounds, suggests that lethal predation on trout is generally limited to fingerlings ( Markle pers. com. 2004, Reid pers. com. 2004, Smith pers. com. 2004). It is not believed that predation on Miller Lake lamprey by piscivorous adult trout has been a threat to the sustainability of lamprey populations. These populations have co- evolved with native trout and appear to be productive enough to withstand some level of predation. The Jack Creek population is an exception. Jack Creek is believed to only support populations of Miller Lake lamprey and speckled dace. Since this lamprey population evolved absent predation from trout, there is a concern that an introduction of piscivorous adult trout could upset the ecological balance in Jack Creek and present a threat to both the lamprey and dace populations. For this reason, stocking of hatchery fish is prohibited by rule in Jack Creek or other streams containing Miller Lake lamprey. Miller Lake Fisheries - Miller Lake currently supports a recreational trout fishery of entirely introduced species. Miller Lake's one notable native species, the Miller Lake Lamprey, was thought extinct when the Oregon Department of Fish and Wildlife Commission approved the current Klamath Basin Fish Management Plan ( ODFW 1997). Today, Miller Lake provides a popular " catchable" and fingerling rainbow trout program, a trophy brown trout fishery, and an under- utilized kokanee population of small- sized individuals ( Smith pers. com. 2004). Due to the role of Miller Lake as a recreational fishery and concerns over the potential impact of lampreys on introduced trout populations in the lake, the history and status of Miller Lake fisheries are summarized below by species. Rainbow trout fingerlings ( 2- 4 inches) were planted in Miller Lake until 1948, when stocking was discontinued due to poor returns. At that time, the poor rainbow fishery was believed to have been due to lamprey predation and competition with resident tui chubs ( Cochrun 1950, Public Review Draft 4- 27- 05 1951a). However, based on the reported poor performance of stocked fingerling rainbows post-treatment ( see below), without either lampreys or tui chubs, it appears that local habitat conditions, and not trophic competition with tui chub or parasitism by lamprey, were driving the poor rainbow population dynamics. Recent observations by ODFW biologists have indicated that while the rainbow trout in Miller Lake are surviving, growing and being harvested by anglers, survival and growth have been, at best, marginal ( Smith pers. com. 2004). Trapnet samples in Miller Lake have been very inefficient at capturing older age class rainbow trout so the average size of sampled trout is not representative of the fish that are available for angler harvest. While trapnet sets typically made in the fall are not particularly good indicators of the rainbow population in Miller Lake, Trapnet sampling of rainbow trout documented an average length of approximately 8 inches in 1988 and approximately 4 inches in 1997. The release of catchable- sized rainbow trout into Miller Lake was initiated in 2001 to supplement the ongoing fingerling stocking program. Brown trout were first introduced into Miller Lake in 1981 and have been stocked annually since. Although small numbers may have been present prior to treatment. Survival and growth of brown trout has been excellent ( Smith pers. com. 2004). Brown trout averaged approximately 17 inches in length in 1998 and approximately 16 inches in 2001. Larger fish captured in trap net sets exceed 10 pounds. Miller Lake was identified by sport- fishing author Denny Rickards as one of the top ten brown trout producing lakes in the western United States. Lampreys themselves, as well as their impaired prey, might in turn serve as additional prey for the large, highly piscivorous brown trout. Stocks of kokanee were introduced to Miller Lake from several states between 1964 and 1971 ( all post- treatment). Kokanee have been very successful reproducing and stocking has not been necessary since 1971. The average size of maturing adults have remained relatively small. Miller Lake is an oligotrophic lake with very low productivity ( Johnson et al. 1985). The length of maturing female kokanee ranged between 7.5- 10 inches between 1965 tol972, and the average size of kokanee females in 2001 was approximately 8 inches. Based on the relatively small length of maturing kokanee females, it appears that environmental conditions or interspecific competition with other trout are driving the kokanee population dynamics. Brook trout were stocked in Miller Lake from the 1930' s until 1948. Brook trout were present in Miller Creek and apparently survived in tributaries during the 1958 treatment, since seven brook trout ( 6- 14 in) were gill- netted from the lake in 1964, prior to introduction of 85,000 kokanee and 150,000 rainbow fingerlings. No brook trout are currently stocked into the lake or tributaries of the lake. A healthy self- sustaining population of brook trout is currently present in Miller Creek, below the lamprey barrier, where they have apparently coexisted with lampreys since both recovered from the 1958 treatment. Tui chubs were present in Miller Lake prior to the 1958 treatment. It is not known whether tui chub were a native or introduced population. However, based on the elevation and atypical tui chub habitat in the lake, it is believed to have been an un- authorized introduction, most probably as a baitfish. Trophic competition between tui chub and rainbow trout has been consistently demonstrated in several Oregon lakes, including Diamond Lake in Douglas County. Tui chub or " roach" problems in Miller Lake were identified by Ken Cochrun ( Fisheries Agent, Oregon State Public Review Draft 4- 27- 05 game Comm.) in his 1950 and 1951 annual reports ( Cochrun 1950, 1951a). However, Mr. Cochrun felt that the " large population" of tui chub would be relatively easy to control compared to the lamprey and hence the need for the radical chemical treatment with toxaphene, which would eliminate both species, rather than rotenone, which would have limited effect on the lamprey ammocoetes in the substrate. In the 1950' s, as is still the case, considerable amount of time was expended by fishery districts controlling tui chub (" roach"), as noted in Mr. Cochrun's annual reports. Tui chubs were never restocked after the treatment and are no longer present in the Miller Lake drainage. One of the goals of this conservation plan for the Miller Lake Lamprey is to re- establish a lamprey population in Miller Lake itself. Historical reports from Miller Lake prior to the extirpation of lampreys nowhere mention specific mortality of adult trout, even when lamprey were abundant, although large trout were noted to have collections of scars ( see above - Lamprey/ Trout Interaction). Based on historical accounts and recent observations from the Upper Sycan drainages, mortality when observed has been on small fish (< 10cm TL). Observations from Miller Lake in the past and recent observations of trophy redband trout fisheries in Upper Klamath Lake indicate that little to no effect is experienced by the fish based on the occurrence of healed lamprey scars. Self- sustaining populations of brown and brook trout ( unstocked) currently coexist with lampreys in Miller Creek below the lamprey barrier. Were lamprey to become reestablished in Miller Lake, they would probably feed primarily on juvenile kokanee, which are abundant in the lake. Although lamprey predation on adult trout may result in some stress and condition loss, the principal effect on adult kokanee and trout fisheries in Miller Lake is likely to be aesthetic, with small round wounds (< l/ 2 in), or scars, on the side of fish. Future Recreational Fish Management The recreational trout and kokanee salmon fisheries in Miller Lake are an extremely valuable fish resource to local community and anglers. All efforts will be made by the Oregon Department of Fish and Wildlife to continue to offer angling recreation at current harvestable levels. In the unlikely event that the re- establishment of the Miller Lake lamprey adversely impacts the trout and kokanee population abundance, then additional fish stocking or other compatible management actions will be initiated as necessary to meet recreational fishery management objectives. Conservation Plan Note: Underlined, bold text in italics represents those portions of the conservation plan that are proposed to be adopted into Oregon Administrative Rule by the Oregon Fish and Wildlife Commission. Purpose This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake lamprey, Lampetra ( Entosphenus) minima. This is the first step in securing populations that currently exist in the Klamath Basin and in Public Review Draft 4- 27- 05 determining their status, abundance, distribution, and life history needs. As new information on the lamprey becomes available it is expected that this document will be modified and updated to reflect the current state of our knowledge. Species Management Unit and Population Description The Miller Lake Lamprey species management unit is comprised of six documented populations and one uncertain population. They are: • Mainstem Upper Williamson River above Klamath Marsh • Miller Creek • Jack Creek • Sycan River above Sycan Marsh • Long Creek • Coyote Creek • Shake Creek ( lamprey present have not been identified to species) Desired Status The desired status of the Miller Lake lamprey is for the species to be distributed widely throughout its historic range, with populations robust enough to withstand stochastic environmental events, and with both the populations and their habitat secure from anthropogenic threats. Current Status The Miller Lake Lamprey is endemic to the Klamath Basin and was recently re- described ( Lorion et al 2000). It is currently known from two sub- drainages. The Williamson River sub- drainage includes populations in Miller Creek, Jack Creek, Klamath Marsh and the mainstem upper Williamson River. In the Sycan sub- drainage the lamprey exists in Long Creek and in the upper Sycan River above the Sycan Marsh. Information regarding the abundance and population structure of Miller Lake lamprey in these systems is not available, and only anecdotal information is available for the life history or habitat requirements of the species. For detailed information on the current information available for the species see Life History section. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier to connectivity between Miller Creek and Miller Lake. Public Review Draft 4- 27- 05 Management Strategies The short- and long- term management strategies for the Miller Lake Lamprey species management unit are: Short- term Strategy a) Re- establish connectivity to Miller Lake. Long- term Strategies b) Ensure appropriate habitat conditions and availability within the natural range of Miller Lake lamprey. c) Reduce entrainment or the potential for entrainment of adult and larval lampreys into water diversions. d) Reduce stranding or the potential for stranding of larval lampreys in dewatered segments of streams below water diversions. e) Maintain unobstructed opportunities, within and among populations for genetic exchange, natural dispersal or migration activities, and re- colonization of unoccupied portions of historical habitat. f) No hatchery fish shall be stocked in streams that support Miller Lake lamprey. Management strategies are those general conditions relevant to the conservation of the species that are considered essential to ensure its long- term survival within its natural range. Although there are many aspects of a species life- history and management that may play a role in the species' biology, the management strategies include those aspects that are currently considered to be both essential for its long- term survival and that are potentially at risk. Conservation Actions Conservation actions are those specific activities or projects that have been identified as appropriate for the realization of the above conservation goals. General - Due to the general lack of information about the life- history, habitat requirements, and distribution of the Miller Lake Lamprey, any studies which increase our understanding of the species will contribute to future conservation planning and should be supported. Habitat - At this time, the general habitat requirements of the Miller Lake Lamprey populations in the upper Williamson and upper Sycan drainages appear to be similar to those of the native trout populations, and habitat restoration or enhancement projects that benefit the trout populations should be beneficial to the lamprey as well. However, there may be specific differences between these species that should be considered in future projects as our understanding of the lamprey's life- history increases. Public Review Draft 4- 27- 05 Entrainment - At this time there has been no evaluation of potential entrainment risks to the Miller Lake Lamprey. Unscreened or improperly screened irrigation diversions currently exist on the upper Sycan and upper Williamson River systems. Private irrigator participation into the screening program should continue to be encouraged and supported. Stranding - At this time there has been no evaluation of potential stranding risks to the Miller Lake Lamprey. Current water diversions reduce the stream flow in segments of the streams directly below the diversion point. Minimum stream flows or gradual ramping strategies should be encouraged where practicable. Connectivity - The Miller Lake Lamprey is not known to carry out extensive spawning migrations. However, due the tendency for ammocoetes to drift downstream during the multi- year larval stage, it is essential that local populations have free upstream passage opportunities during the period when adults are residing in the stream. The swimming characteristics and passage capabilities of trout ( for whom many fish ladders are designed) and lamprey are very different. Lamprey- friendly ladders or passage corridors should be encouraged in the design phase of new projects, and occupied lamprey streams should be evaluated for the presence of older fish ladders, as well as other artificial barriers. Re- establishment of the Miller Lake population - Miller Lake itself, the type locality for the species, remains the only known historical habitat from which the Miller Lake Lamprey is known to have been extirpated. It also represents both an ecologically unique habitat and a crucial component in the evolutionary legacy of the species. Following the extirpation of lampreys from Miller Lake in 1958, a lamprey barrier was constructed in Miller Creek to prevent recolonization of the lake from Miller Creek. The barrier remains in place today. Removal of this barrier should have a high priority in order to meet the conservation goals for the Miller Lake Lamprey and is discussed in more detail below. The barrier was constructed by the State of Oregon Game Commission in 1959 at the upstream extent of a short, high- gradient cascade in Miller Creek approximately 54 mile downstream from the outlet of Miller Lake and forest road 9772. It consists of a low stonework dam ( about 2 ft high) constructed of mortared native rocks, with a metal plate and lip bolted on top. The configuration is very effective as a man- made barrier to fish passage. However, the current condition of the concrete and rock structure is substantially deteriorated. A recent examination by ODFW, USFWS and USFS personnel indicates that the structure would be relatively easy to remove using hand tools without adverse instream impacts ( evaluated by R. Smith et al., September 2003). Recent baseline surveys ( August 2004) of lamprey ammocoetes in the Miller drainage indicate that they are apparently limited to less than two miles of low- gradient stream in lower Miller Creek ( Gunckel and Reid 2004). Allowing lampreys to re- establish a population above the cascade in Miller Creek and Miller Lake will aid in creating an additional buffer against stochastic events that could otherwise eradicate this geographically limited population. Additional surveys should be scheduled on a five- 10 Public Review Draft 4- 27- 05 year basis to evaluate status of the population and the success of re- colonization efforts. Removal of the barrier should allow natural expansion of the population and recolonization of the lake from the Miller Creek population, which survived the original extirpation. Information Gaps 1) Life history - very little quantitative information is available on the life history and habitat requirements of either ammocoetes or adults with which to guide management decisions. 2) Distribution - current understanding of distribution is based on surveys in the 1990' s that primarily focused on the Williamson and Sprague River drainages. Other potential areas in the Klamath Basin outside these drainages have not been properly surveyed. 3) No specific population or fine- scale distributional surveys have been undertaken for any populations outside of the Miller Lake drainage. 4) Preliminary morphological and genetic information suggests that there are regional differences between the various populations of Miller Lake Lamprey in the Klamath Basin. However, the available information is not yet sufficient for making management decisions relative to population independence or uniqueness. Strategies to Address Gaps 1) A Miller Lake Lamprey Technical Management Team has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. This team currently consists of biologists from ODFW ( Roger Smith and Stephanie Gunckel), Oregon State University ( Douglas Markle), the Western Lamprey Project ( Stewart Reid), and the Great Lakes Inst. Environmental Research ( Margaret Docker - lamprey genetics). 2) ODFW will, where appropriate, incorporate lampreys into their fish survey protocols in the Klamath Basin and will seek to collaborate with other researchers carrying out lamprey surveys in the Basin. 3) ODFW and the Miller Lake Lamprey Technical Management Team will promote the investigation of morphological and genetic information informative to resolving regional differences between the various populations of Miller Lake Lamprey. 11 Public Review Draft 4- 27- 05 Research, Monitoring and Evaluation Research Promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the Monitoring Where appropriate, incorporate lampreys into fish survey protocols in the Klamath Basin and seek to collaborate with other researchers carrying out lamprey surveys in the Basin. Evaluation Periodically evaluate the status of Miller Lake lamprey and the success of the conservation plan management strategies. Research - Due to the paucity of available quantitative information on the distribution, life history, habitat requirements of either ammocoetes or adults, ODFW will promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the species. Monitoring - ODFW, in collaboration with USFWS, has documented baseline distribution of the fish in Miller Creek with the lamprey barrier in place ( Gunckel and Reid 2004). Monitoring of the population will continue to evaluate upstream movement, distribution, abundance, and re- colonization of the lake through the cooperative effort of ODFW and the Miller Lake Lamprey Technical Management Team. The ODFW and the Technical Management Team, will meet and discuss progress after the barrier has been removed, and the lampreys have had unobstructed passage to Miller Lake for five years. Adaptive Management a) A Miller Lake Lamprey Technical Management Team shall be formed. b) The Miller Lake Lamprey Technical Management Team shall meet periodically to review the success of the management actions identified in the Miller Lake Lamprey Conservation Plan and identify modifications to management actions that are needed to achieve the desired status for Miller Lake lamprey. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier in Miller Creek. The Miller Lake Lamprey Technical Management Team ( see under Strategies to Address Gaps) has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. The team will meet periodically to evaluate current status and management strategies in light of new information. 12 Public Review Draft 4- 27- 05 Current management action is proposed for removal of the Miller Creek Barrier. The lamprey population in Miller Creek will continue to be monitored by ODFW following the 2004 baseline surveys. After five years the Miller Lake Lamprey Technical Management Team will evaluate the status of the Miller Creek population and the success of natural re- colonization of Miller Lake. If sufficient progress has not been made, then discussions regarding active re- introduction of lampreys to the lake will be initiated. Trigger for Plan Modification Substantial negative changes in the distribution or abundance of the Miller Lake lamprey, or the recognition of new threats to the species, shall prompt a review of the species management unit's status and all Miller Lake Lamprey Conservation Plan management strategies by the Miller Lake Lamprey Technical Management Team. Appropriate modifications to the Miller Lake Lamprey Conservation Plan intended to better achieve the desired status identified in the Plan shall be proposed by the Miller Lake Lamprey Technical Management Team. Reporting a) The Miller Lake Lamprey Technical Management Team shall periodically report on the status of Miller Lake lamprey and the effectiveness of the management strategies identified in the Miller lake Lamprey Conservation Plan. b) Annual Miller Lake Lamprey data collected and any reports on the status of Miller Lake Lamprey or evaluations of the Miller Lake Lamprey Conservation Plan shall be made available to the public. The staff of the ODFW's Klamath Watershed District and Native Fish Research Project will periodically report monitoring and research results through native fish conservation strategy stock status reviews. 13 Public Review Draft 4- 27- 05 Citations Bond, C. E. and T. T. Kan. 1973. Lampetra ( Entosphenus) minima n. sp., a dwarfed parasitic lamprey from Oregon. Copeia 1973: 568- 574. Cochran, P. A. and R. E. Jenkins. 1994. Small fishes as hosts for parasitic lampreys. Copeia 1994: 499- 504. Cochrun, K. 1950. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951a. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951b. Letter to Dr. HJ. Rayner, Chief of Fisheries Operations, Oregon State Game Commission. 4 November 1951. Gerlach, A. 1958. Rehabilitation of Miller Lake, 1958. Report to files - Fishery Division, Central Region, Klamath District. Oregon State Game Commision. Gerlach, A. 1959. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Gerlach, A. and R. Borovicka. 1964. State- wide fishery rehabilitation: Miller Lake and tributaries segment ( Completion Report F- 20- D- 11). Oregon State Game Commission. Gill, H. S., C. B. Renaud, F. Chapleau, R. L. Mayden and I. C. Potter. 2003. Phylogeny of living parasitic lampreys ( Petromyzontiformes) based on morphological data. Copeia 2003: 687- 703. Gunckel S. and S. Reid. 2004. Baseline survey of Miller Lake Lamprey ( Entosphenus minimus) ammocoete distribution in the Miller Lake subdrainage. Oregon Dept. Fish and Wildlife. Hubbs, C. L. 1971. Lampetra ( Entosphenus) lethophaga, new species, the nonparasitic derivative of the Pacific lamprey. Trans. San Diego Soc. Nat. Hist. 16: 125- 164. Johnson, D. M., R. R. Peterson, D. R. Lycan, J. W. Sweet, M. E. Neuhaus and A. L. Schaedel. 1985. Miller Lake In Atlas of Oregon Lakes. Oregon State Univ. Press. Corvallis, Oregon. Kan, T. T. 1975. Systematics, variation, distribution, and biology of lampreys of the genus Lampetra in Oregon. Doctoral Dissertation, Oregon State Univ., Corvallis, Oregon. Kan, T. T. and C. E. Bond. 1981. Notes on the biology of the Miller Lake lamprey Lampetra { Entosphenus) minima. Northwest Sci. 55: 70- 74. 14 Public Review Draft 4- 27- 05 Kostow, K. 2002. Oregon lampreys: natural history, status and analysis of management issues. Info. Rept. 2002- 01, Fish Division, Oregon Dept. Fish and Wildlife. Lorion, CM., D. F. Markle, S. B. Reid and M. F. Docker. 2000. Redescription of the presumed-extinct Miller Lake Lamprey, Lampetra minima. Copeia 2000: 1019- 1028. Oregon Dept. Fish and Wildlife. 1997. Klamath River Basin, Oregon - Fish Management Plan, August 22, 1997. Personal Communications Docker, Margaret F. - Great Lakes Inst. Environmental Research, Univ. Windsor; 401 Sunset Ave, Windsor, ON N9B 3P4 Goodman, Damon - Fisheries Biology, Humboldt State Univ.; 1 Harpst Street, Arcata, CA 95521- 8299 Markle, Doug F. - Dept. Fisheries and Wildlife, Oregon State Univ.; 104 Nash Hall, Oregon State Univ., Corvallis, OR 97331- 3803 Reid, Stewart B. - U. S. Fish and Wildlife Service, Endangered Species Division; 6610 Washburn Way, Klamath Falls, OR 97603; Current address - Western Fishes, 2045 East Main, Ashland OR 97520 Smith, Roger C. - District Fish Biologist, Oregon Dept. Fish and Wildlife; 1850 Miller Island Road West, Klamath Falls, OR 97603 15

16261. [Image] A strategy for achieving healthy watersheds in Oregon


	"January 2001."
	Citation Citation Citation Abstract Copy Title: A strategy for achieving healthy watersheds in Oregon Author: Oregon Watershed Enhancement Board Year: 2001, 2004 "January 2001." Title: A strategy for achieving healthy watersheds in Oregon Author: Oregon Watershed Enhancement Board Year: 2001, 2004 "January 2001."

16262. [Article] Distribution and movements of Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin

Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin and other large river systems in western Alaska have declined dramatically since the late 1990s. This continuing trend has ...

Citation

16263. [Image] Geology and ground-water resources of the Swan Lake-Yonna Valleys area, Klamath County, Oregon


	Abstract The Swan Lake-Yonna Valleys area consists of two intermountain valleys with their subordinate side valleys adjoining slopes, and mountainous boundary ridges, In all the area covered is about 256 ...
	Citation Citation Citation Abstract Copy Title: Geology and ground-water resources of the Swan Lake-Yonna Valleys area, Klamath County, Oregon Author: Meyers, Joseph D. Year: 1952, 2007, 2005 Abstract The Swan Lake-Yonna Valleys area consists of two intermountain valleys with their subordinate side valleys adjoining slopes, and mountainous boundary ridges, In all the area covered is about 256 square miles but the essential agricultural sections are restricted to the floors of Swan Lake and Yonna valleys with their respective subsidiary extensions of Pine Flats and Alkali Lake flats, a valley-floor area totaling about 90 square miles The floors of Swan Lake Valley and Yonna Valley lie at an altitude of about U52OO feet but the mountainous boundary ridges rise generally to 6000 feeto Yonna Valley is largely drained to Lost River by Buck Creek but also in part to Alkali Lakeo Swan Lake Valley and Pine Flats have only internal drainage. The Swan Lake Valley floor is the top of a deep alluvial fill, while Yonna Valley floor is mainly an erosional surface sloping to lines of through drainage Precipitation is about lit inches annually on the valley floors 9 but must be much more, possibly 18 to 24 inches, on the higher parts of the drainage basins. The growing season is short and killing frosts do occur in late spring and early fall. The rock units forming the bedrock structure of the area are consolidated or semiconsolidated rocks of Tertiary age and are largely of volcanic-flow and volcanic-sedimentary originc They consist of three main elements, a lower lava-rock unit, a sedimentary and volcanic-sedimentary unit, and an upper lava-rock unito The unconsolidated deposits are the older alluvium of Quaternary (and in part of late-Tertiary) age and the younger alluvium of Quaternary age0 The bedrock is faulted and deformed particularly so along a northwest-southeast set of fault lines that have given a remarkable linearity to the topography. Unpublished records subject to revision Ground water occurs below a regional water table that slopes south-ward to the level of the Lost Rivero The upper lava rocks and the lower lava rocks contain the principal permeable zones that occur beneath the areao Breccia and other porous zones in those rocks in places yield water to wells at a rate as large as 35OOO gallons per minute with but 1 or 2 feet of drawdowno The economical construction of irrigation wells requires the determination of the best possible location at which those rocks may be tapped at shallow depth below the level of the water tableo The ground water in general relatively low in dissolved mineral matter and is but slightly to moderately hard and would be considered chemically satisfactory for most uaeso Irrigation is the principal use of the ground water in the area north of the Horsefly Irrigation Districto There 3? wells supplied about 6,000 acre-feet of water to about 3800 acres of land in 1950. Water-level records obtained since 19U8 and approximations of the probable annual recharge from precipitation indicate that the present withdrawals are considerably less than the annual increment of the ground-water recharge, Rough estimates indicate that an increase in withdrawals of as much as 100 percent or more can take place before ground-water levels, by a persistent lowering, will begin to indicate that the annual replenishment is being exceeded. Title: Geology and ground-water resources of the Swan Lake-Yonna Valleys area, Klamath County, Oregon Author: Meyers, Joseph D. Year: 1952, 2007, 2005 Abstract The Swan Lake-Yonna Valleys area consists of two intermountain valleys with their subordinate side valleys adjoining slopes, and mountainous boundary ridges, In all the area covered is about 256 square miles but the essential agricultural sections are restricted to the floors of Swan Lake and Yonna valleys with their respective subsidiary extensions of Pine Flats and Alkali Lake flats, a valley-floor area totaling about 90 square miles The floors of Swan Lake Valley and Yonna Valley lie at an altitude of about U52OO feet but the mountainous boundary ridges rise generally to 6000 feeto Yonna Valley is largely drained to Lost River by Buck Creek but also in part to Alkali Lakeo Swan Lake Valley and Pine Flats have only internal drainage. The Swan Lake Valley floor is the top of a deep alluvial fill, while Yonna Valley floor is mainly an erosional surface sloping to lines of through drainage Precipitation is about lit inches annually on the valley floors 9 but must be much more, possibly 18 to 24 inches, on the higher parts of the drainage basins. The growing season is short and killing frosts do occur in late spring and early fall. The rock units forming the bedrock structure of the area are consolidated or semiconsolidated rocks of Tertiary age and are largely of volcanic-flow and volcanic-sedimentary originc They consist of three main elements, a lower lava-rock unit, a sedimentary and volcanic-sedimentary unit, and an upper lava-rock unito The unconsolidated deposits are the older alluvium of Quaternary (and in part of late-Tertiary) age and the younger alluvium of Quaternary age0 The bedrock is faulted and deformed particularly so along a northwest-southeast set of fault lines that have given a remarkable linearity to the topography. Unpublished records subject to revision Ground water occurs below a regional water table that slopes south-ward to the level of the Lost Rivero The upper lava rocks and the lower lava rocks contain the principal permeable zones that occur beneath the areao Breccia and other porous zones in those rocks in places yield water to wells at a rate as large as 35OOO gallons per minute with but 1 or 2 feet of drawdowno The economical construction of irrigation wells requires the determination of the best possible location at which those rocks may be tapped at shallow depth below the level of the water tableo The ground water in general relatively low in dissolved mineral matter and is but slightly to moderately hard and would be considered chemically satisfactory for most uaeso Irrigation is the principal use of the ground water in the area north of the Horsefly Irrigation Districto There 3? wells supplied about 6,000 acre-feet of water to about 3800 acres of land in 1950. Water-level records obtained since 19U8 and approximations of the probable annual recharge from precipitation indicate that the present withdrawals are considerably less than the annual increment of the ground-water recharge, Rough estimates indicate that an increase in withdrawals of as much as 100 percent or more can take place before ground-water levels, by a persistent lowering, will begin to indicate that the annual replenishment is being exceeded.

16264. [Image] Critical Habitat Reform Act of 2004: report together with dissenting views (to accompany H.R. 2933) (including cost estimate of the Congressional Budget Office)


	19 p.; Caption title; "November 19, 2004"
	Citation Citation Citation Abstract Copy Title: Critical Habitat Reform Act of 2004: report together with dissenting views (to accompany H.R. 2933) (including cost estimate of the Congressional Budget Office) Author: United States. Congress. House. Committee on Resources Year: 2004, 2006, 2005 19 p.; Caption title; "November 19, 2004" Title: Critical Habitat Reform Act of 2004: report together with dissenting views (to accompany H.R. 2933) (including cost estimate of the Congressional Budget Office) Author: United States. Congress. House. Committee on Resources Year: 2004, 2006, 2005 19 p.; Caption title; "November 19, 2004"

16265. [Image] Three great factors in Oregon's development


	An article on the agricultural, industrial and economic development of the state of Oregon in the early 20th century
	Citation Citation Citation Abstract Copy Title: Three great factors in Oregon's development Author: Moon, A.W. Year: 1906, 2004 An article on the agricultural, industrial and economic development of the state of Oregon in the early 20th century Title: Three great factors in Oregon's development Author: Moon, A.W. Year: 1906, 2004 An article on the agricultural, industrial and economic development of the state of Oregon in the early 20th century

16266. [Image] Oregon Plan for Salmon and Watersheds biennial report, 2001-2003


	A GUIDE TO PART I - ESTABLISHING COMMON BASINS A GUIDE TO PART II - THE FOUR ELEMENTS OF THE OREGON PLAN THE OREGON PLAN - BASIN BY BASIN KEY TO BASIN LAYOUTS BASIN REPORTS North Coast Umpqua South Coast ...
	Citation Citation Citation Abstract Copy Title: Oregon Plan for Salmon and Watersheds biennial report, 2001-2003 Author: Oregon Watershed Enhancement Board Year: 2003, 2005, 2004 A GUIDE TO PART I - ESTABLISHING COMMON BASINS A GUIDE TO PART II - THE FOUR ELEMENTS OF THE OREGON PLAN THE OREGON PLAN - BASIN BY BASIN KEY TO BASIN LAYOUTS BASIN REPORTS North Coast Umpqua South Coast Rogue Klamath Lakes Basin Owyhee-Malheur Powder Grande Ronde Umatilla John Day Deschutes Hood Lower Columbia Willamette FEDERAL CONSERVATION AND RESTORATION DATA THE OREGON PLAN - FOUR ELEMENTS AGENCY ACTIONS VOLUNTARY RESTORATION ACTIONS BY OREGONIANS MONITORING SCIENCE OVERSIGHT HI. THE OREGON PLAN-OBSERVATIONS and RECOMMENDATIONS OF THE OWEB BOARD DATA SOURCES and CREDITS Title: Oregon Plan for Salmon and Watersheds biennial report, 2001-2003 Author: Oregon Watershed Enhancement Board Year: 2003, 2005, 2004 A GUIDE TO PART I - ESTABLISHING COMMON BASINS A GUIDE TO PART II - THE FOUR ELEMENTS OF THE OREGON PLAN THE OREGON PLAN - BASIN BY BASIN KEY TO BASIN LAYOUTS BASIN REPORTS North Coast Umpqua South Coast Rogue Klamath Lakes Basin Owyhee-Malheur Powder Grande Ronde Umatilla John Day Deschutes Hood Lower Columbia Willamette FEDERAL CONSERVATION AND RESTORATION DATA THE OREGON PLAN - FOUR ELEMENTS AGENCY ACTIONS VOLUNTARY RESTORATION ACTIONS BY OREGONIANS MONITORING SCIENCE OVERSIGHT HI. THE OREGON PLAN-OBSERVATIONS and RECOMMENDATIONS OF THE OWEB BOARD DATA SOURCES and CREDITS

16267. [Image] Reproductive biology and demographics of endangered Lost River and shortnose suckers in Upper Klamath Lake, Oregon


	We analyzed the reproductive biology and demographics of the Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris, two endangered species endemic to the upper Klamath Basin ...
	Citation Citation Citation Abstract Copy Title: Reproductive biology and demographics of endangered Lost River and shortnose suckers in Upper Klamath Lake, Oregon Author: Perkins, David L.; Scoppettone, Gary; Buettner, Mark Year: 2000, 2005 We analyzed the reproductive biology and demographics of the Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris, two endangered species endemic to the upper Klamath Basin of Oregon and California, from 1984-1997. Lost River suckers had distinct river and lake shoreline spawning stocks, and individuals of both species commonly spawned in consecutive years. In the Williamson River and lower Sprague River, spawning migration by both species occurred mainly during a 5-week period that started within the first three weeks of April and peaked between mid April and early May, although a separate, earlier (mid March) run of Lost River suckers may also spawn in the upper Sprague River. Migration of both species was several times higher at dawn (0500-0730 h) and evening (1800-2200 h) than other times of the day. Peak migrations almost always corresponded to peaks in water temperature, usually at 10-15°C. Lost River suckers were captured at springs along the east shore of the lake from late February through mid May, with peak spawning usually in mid March to mid April. Shortnose suckers were generally captured at the springs from late March through late May, but the time of peak spawning was not determined. Size and age at maturity was determined by recruitment from a strong year class (1991). Male Lost River suckers began recruitment into the adult population at age 4+ (375-475 mm). Substantial recruitment of females did not begin until age 7+ (510-560 mm). Male and female shortnose suckers began recruitment at age 4+, with the majority offish recruited by age 5+. Males recruited at 270-370 mm; females recruited at 325-425 mm. Fecundity estimates were quite variable ranging from 44,000-236,000 eggs per female Lost River sucker and 18,000-72,000 eggs per female shortnose sucker. In 1984 and 1985, the spawning populations of both species were dominated by large, old individuals, with little indication of recent adult recruitment. In the next 13 years, only one strong year class (1991) recruited into the spawning populations of both species. This year class temporarily boosted population numbers, but annual fish kills from 1995 to 1997 eliminated most adults of both species. Associated with poor water quality caused by the proliferation and decay of blue-green algae Aphanizomenonflos-aquae, these fish kills raise concern that alterations to the lake ecosystem over the past several decades have Perkins et al. Lost River and shortnose suckers 5 increased the magnitude and frequency of poor water quality. As a result, mortality rates of all life stages may have increased, thereby disrupting the species' life history pattern and potentially decreasing long-term population viability. Introduction The Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris are large, long-lived suckers endemic to the upper Klamath Basin of Oregon and California. Both species are typically lake dwelling but migrate to tributaries or shoreline springs to spawn (Moyle 1976, Scoppettone and Vinyard 1991). Once extremely abundant (Cope 1884, Gilbert 1898), both species have experienced severe population declines and were federally listed as endangered in 1988 (USFWS 1988). Much of the original habitat of these suckers has been destroyed or altered by conversion of lake areas to agriculture, dams, instream flow diversions, and water quality problems associated with timber harvest, loss of riparian vegetation, livestock grazing, and agricultural practices (USFWS 1988). Knowledge of the life history of Lost River and shortnose suckers is fundamental to recovery of these species. The objective of this report was to present the results of studies conducted from 1987-1998 on the reproductive biology and demographics of Lost River and shortnose suckers, and to compare these results with earlier unpublished data. Study Sites Studies were conducted on Upper Klamath Lake and the lower Williamson-Sprague river system (Figure 1). These waters form the upper portion of the Klamath River Basin in south-central Oregon and represent most remaining native habitat of Lost River and shortnose suckers. Upper Klamath Lake is a remnant of pluvial Lake Modoc that included eight major basins and encompassed 2,839 km2 (Dicken 1980). Today, Upper Klamath Lake serves as a storage reservoir that provides water for agricultural irrigation, waterfowl refuges, instream flow requirements of anadromous fish, and hydroelectric power generation. At full capacity, the lake covers approximately 360 km2 and has an average depth of 2.4 m. Most deeper water (3-12 m) is restricted to narrow trenches along the western shore. Lake elevation is controlled at the outlet by Link River Title: Reproductive biology and demographics of endangered Lost River and shortnose suckers in Upper Klamath Lake, Oregon Author: Perkins, David L.; Scoppettone, Gary; Buettner, Mark Year: 2000, 2005 We analyzed the reproductive biology and demographics of the Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris, two endangered species endemic to the upper Klamath Basin of Oregon and California, from 1984-1997. Lost River suckers had distinct river and lake shoreline spawning stocks, and individuals of both species commonly spawned in consecutive years. In the Williamson River and lower Sprague River, spawning migration by both species occurred mainly during a 5-week period that started within the first three weeks of April and peaked between mid April and early May, although a separate, earlier (mid March) run of Lost River suckers may also spawn in the upper Sprague River. Migration of both species was several times higher at dawn (0500-0730 h) and evening (1800-2200 h) than other times of the day. Peak migrations almost always corresponded to peaks in water temperature, usually at 10-15°C. Lost River suckers were captured at springs along the east shore of the lake from late February through mid May, with peak spawning usually in mid March to mid April. Shortnose suckers were generally captured at the springs from late March through late May, but the time of peak spawning was not determined. Size and age at maturity was determined by recruitment from a strong year class (1991). Male Lost River suckers began recruitment into the adult population at age 4+ (375-475 mm). Substantial recruitment of females did not begin until age 7+ (510-560 mm). Male and female shortnose suckers began recruitment at age 4+, with the majority offish recruited by age 5+. Males recruited at 270-370 mm; females recruited at 325-425 mm. Fecundity estimates were quite variable ranging from 44,000-236,000 eggs per female Lost River sucker and 18,000-72,000 eggs per female shortnose sucker. In 1984 and 1985, the spawning populations of both species were dominated by large, old individuals, with little indication of recent adult recruitment. In the next 13 years, only one strong year class (1991) recruited into the spawning populations of both species. This year class temporarily boosted population numbers, but annual fish kills from 1995 to 1997 eliminated most adults of both species. Associated with poor water quality caused by the proliferation and decay of blue-green algae Aphanizomenonflos-aquae, these fish kills raise concern that alterations to the lake ecosystem over the past several decades have Perkins et al. Lost River and shortnose suckers 5 increased the magnitude and frequency of poor water quality. As a result, mortality rates of all life stages may have increased, thereby disrupting the species' life history pattern and potentially decreasing long-term population viability. Introduction The Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris are large, long-lived suckers endemic to the upper Klamath Basin of Oregon and California. Both species are typically lake dwelling but migrate to tributaries or shoreline springs to spawn (Moyle 1976, Scoppettone and Vinyard 1991). Once extremely abundant (Cope 1884, Gilbert 1898), both species have experienced severe population declines and were federally listed as endangered in 1988 (USFWS 1988). Much of the original habitat of these suckers has been destroyed or altered by conversion of lake areas to agriculture, dams, instream flow diversions, and water quality problems associated with timber harvest, loss of riparian vegetation, livestock grazing, and agricultural practices (USFWS 1988). Knowledge of the life history of Lost River and shortnose suckers is fundamental to recovery of these species. The objective of this report was to present the results of studies conducted from 1987-1998 on the reproductive biology and demographics of Lost River and shortnose suckers, and to compare these results with earlier unpublished data. Study Sites Studies were conducted on Upper Klamath Lake and the lower Williamson-Sprague river system (Figure 1). These waters form the upper portion of the Klamath River Basin in south-central Oregon and represent most remaining native habitat of Lost River and shortnose suckers. Upper Klamath Lake is a remnant of pluvial Lake Modoc that included eight major basins and encompassed 2,839 km2 (Dicken 1980). Today, Upper Klamath Lake serves as a storage reservoir that provides water for agricultural irrigation, waterfowl refuges, instream flow requirements of anadromous fish, and hydroelectric power generation. At full capacity, the lake covers approximately 360 km2 and has an average depth of 2.4 m. Most deeper water (3-12 m) is restricted to narrow trenches along the western shore. Lake elevation is controlled at the outlet by Link River

16268. [Image] Endangered Species Act of 1973 (as amended through December 2004)


	"February 2005."; "Serial no. 109-A."
	Citation Citation Citation Abstract Copy Title: Endangered Species Act of 1973 (as amended through December 2004) Author: United States. Congress. House. Committee on Resources. Year: 2005 "February 2005."; "Serial no. 109-A." Title: Endangered Species Act of 1973 (as amended through December 2004) Author: United States. Congress. House. Committee on Resources. Year: 2005 "February 2005."; "Serial no. 109-A."

16269. [Image] Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon


	Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal ...
	Citation Citation Citation Abstract Copy Title: Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon Author: Plunkett, Steven R.; Snyder-Conn, Elaine Year: 2000, 2005 Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal column, vertebrae, and osteocranium, and their possible associations with water quality and pesticides. X-rays of 1,550 fish and 1,395 matching specimens, collected in 1993, were ranked on the severity of anomalies. One or more anomalies were observed in 15.9% of shortnose suckers and 8.2% of Lost River suckers. Anomaly rates exceeding 1.0%, greater than rates expected from high water quality systems, were observed for lordosis and scoliosis, and abnormalities of the vertebrae, opercula, and pectoral and pelvic fins in shortnose suckers, and abnormalities of vertebrae and opercula in Lost River suckers. The highest rates of anomalies were in vertebrae, pelvic fins, and opercula in shortnose suckers, and opercula and vertebrae in Lost River suckers. Shortnose suckers exhibited higher rates than Lost River suckers for almost all anomalies. Particular anomaly rates differed significantly among sites. There were also substantially more anomalies found in larvae and small juveniles than in larger juveniles. Based on the high anomaly rates observed in this study, it is possible that 0-aged sucker cohorts in Upper Klamath Lake are far more vulnerable to mortality. Title: Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon Author: Plunkett, Steven R.; Snyder-Conn, Elaine Year: 2000, 2005 Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal column, vertebrae, and osteocranium, and their possible associations with water quality and pesticides. X-rays of 1,550 fish and 1,395 matching specimens, collected in 1993, were ranked on the severity of anomalies. One or more anomalies were observed in 15.9% of shortnose suckers and 8.2% of Lost River suckers. Anomaly rates exceeding 1.0%, greater than rates expected from high water quality systems, were observed for lordosis and scoliosis, and abnormalities of the vertebrae, opercula, and pectoral and pelvic fins in shortnose suckers, and abnormalities of vertebrae and opercula in Lost River suckers. The highest rates of anomalies were in vertebrae, pelvic fins, and opercula in shortnose suckers, and opercula and vertebrae in Lost River suckers. Shortnose suckers exhibited higher rates than Lost River suckers for almost all anomalies. Particular anomaly rates differed significantly among sites. There were also substantially more anomalies found in larvae and small juveniles than in larger juveniles. Based on the high anomaly rates observed in this study, it is possible that 0-aged sucker cohorts in Upper Klamath Lake are far more vulnerable to mortality.

16270. [Image] The Water Report - Klamath coho salmon plan rejected: 9th circuit CA/OR


	Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/
	Citation Citation Citation Abstract Copy Title: The Water Report - Klamath coho salmon plan rejected: 9th circuit CA/OR Author: Envirotech Publications Year: 2005, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/ Title: The Water Report - Klamath coho salmon plan rejected: 9th circuit CA/OR Author: Envirotech Publications Year: 2005, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. See the full report at http://www.thewaterreport.com/

16271. [Article] The effects of habitat, climate, and Barred Owls on long-term demography of Northern Spotted Owls

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is copyrighted by Cooper Ornithological ...

Citation

16272. [Image] The effects of the Mazama tephra-falls


	ill.; Thesis (M.A.)--Oregon State University, 1988; Includes bibliographical references (leaves 202-235)
	Citation Citation Citation Abstract Copy Title: The effects of the Mazama tephra-falls Author: Matz, Stephan E. Year: 1987, 2008 ill.; Thesis (M.A.)--Oregon State University, 1988; Includes bibliographical references (leaves 202-235) Title: The effects of the Mazama tephra-falls Author: Matz, Stephan E. Year: 1987, 2008 ill.; Thesis (M.A.)--Oregon State University, 1988; Includes bibliographical references (leaves 202-235)

16273. [Article] Contemporary regional forest dynamics in the Pacific Northwest

Recent climatic warming trends and increases in the frequency and extent of wildfires have prompted much concern regarding the potential for rapid change in the structure and function of forested ecosystems ...

Citation

16274. [Image] Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives


	"GAO-05-211"; "April 2005"
	Citation Citation Citation Abstract Copy Title: Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives Author: U.S. Fish and Wildlife Service Year: 2005 "GAO-05-211"; "April 2005" Title: Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives Author: U.S. Fish and Wildlife Service Year: 2005 "GAO-05-211"; "April 2005"

16275. [Image] The Water Report. Klamath Decisions: Court rulings on "takings" and BIOP/RPA sufficiency


	Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. The abbreviations in the title are for Biological opinion (BIOP) and reasonable and prudent alternative ...
	Citation Citation Citation Abstract Copy Title: The Water Report. Klamath Decisions: Court rulings on "takings" and BIOP/RPA sufficiency Author: Envirotech Publications Year: 2005, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. The abbreviations in the title are for Biological opinion (BIOP) and reasonable and prudent alternative (RPA). See the full report at http://www.thewaterreport.com/ Title: The Water Report. Klamath Decisions: Court rulings on "takings" and BIOP/RPA sufficiency Author: Envirotech Publications Year: 2005, 2008, 2006 Only portions of issues of The Water Report are available in the Klamath Waters Digital Library. The abbreviations in the title are for Biological opinion (BIOP) and reasonable and prudent alternative (RPA). See the full report at http://www.thewaterreport.com/

16276. [Article] Trophic cascades and large mammals in the Yellowstone ecosystem

Reintroduction of wolves to Yellowstone National Park (YNP) in 1995-96 provided a rare opportunity to observe the response of an ecosystem to the return of a top predator, including possible reversal of ...

Citation

16277. [Article] Physical-Environmental Effects of Wave and Offshore Wind Energy Extraction: A Synthesis of Recent Oceanographic Research

The ocean deployment of arrays of Wave Energy Converters (WEC arrays) appears likely in the near future, and deployment of offshore wind turbines has already started. These technologies tap into a potential ...

Citation

16278. [Article] State Funding and Planning Mechanisms to Reduce Greenhouse Gas Emissions from the Transportation Sector

38 pages
Citation Citation Citation Abstract Copy Title: State Funding and Planning Mechanisms to Reduce Greenhouse Gas Emissions from the Transportation Sector Author: Isbell, Rory Year: 2017, 2016 38 pages Title: State Funding and Planning Mechanisms to Reduce Greenhouse Gas Emissions from the Transportation Sector Author: Isbell, Rory Year: 2017, 2016 38 pages

16279. [Article] Vegetation and Small Mammal Responses to Western Juniper (Juniperus occidentalis) Control in Eastern Oregon

Shrub-steppe ecosystems of western North America provide habitat for many wildlife species, are important components of public and private rangelands, and offer recreational opportunities for millions ...

Citation

16280. [Image] Baking Powder Can (Royal Baking Powder)


	Baking Powder Can
	Citation Citation Citation Abstract Copy Title: Baking Powder Can (Royal Baking Powder) Author: James T. Rock, Mary Ellen Rock, Southern Oregon University Laboratory of Anthropology http://www.sou.edu/anthropology/anthlab/index.html, Shana Sandor Year: 1963 Baking Powder Can Title: Baking Powder Can (Royal Baking Powder) Author: James T. Rock, Mary Ellen Rock, Southern Oregon University Laboratory of Anthropology http://www.sou.edu/anthropology/anthlab/index.html, Shana Sandor Year: 1963 Baking Powder Can

16281. [Image] Tomato Paste Tube (Montali Tomato Paste)


	Tomato Paste Tube
	Citation Citation Citation Abstract Copy Title: Tomato Paste Tube (Montali Tomato Paste) Author: James T. Rock, Mary Ellen Rock, Southern Oregon University Laboratory of Anthropology http://www.sou.edu/anthropology/anthlab/index.html, Shana Sandor Year: 1980 Tomato Paste Tube Title: Tomato Paste Tube (Montali Tomato Paste) Author: James T. Rock, Mary Ellen Rock, Southern Oregon University Laboratory of Anthropology http://www.sou.edu/anthropology/anthlab/index.html, Shana Sandor Year: 1980 Tomato Paste Tube

16282. [Article] Egalitarianism and separatism : a history of approaches in the provision of public recreation and leisure service for blacks, 1906-1972

The purpose of this study was to determine the extent to which the philosophy, administration and implementation of public recreation and leisure service has contributed to the democratization of black Americans ...

Citation

16283. [Article] The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration

Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific ...

Citation

16284. [Article] Reproductive implications of parasitic infections and immune challenges in garter snakes

Parasitic infections and immune challenges can affect host reproductive fitness and, ultimately, the evolution of host populations in a myriad of ways. The fitness implications of parasitic infections ...

Citation

16285. [Article] Mixed-Severity Fire Effects on Biological Legacies and Vegetation Response in Pseudotsuga Forests of Western Oregon's Central Cascades, USA

Mixed-severity fire occurrence is increasingly recognized in Pseudotsuga forests of the Pacific Northwest, but questions remain about how tree mortality varies, and forest structure is altered, across ...

Citation

16286. [Article] Mixed-conifer forests of central Oregon : structure, composition, history of establishment, and growth

The structure and composition of mixed-conifer forest (MCF) in central Oregon has been altered by fire exclusion and logging. The resulting increased density, spatial contagion, and loss of fire resistant ...

Citation

16287. [Article] Genesis of some soils in the central western Cascades of Oregon

Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating ...

Citation

16288. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2016 Annual Progress Report

Abstract -- The Imnaha and Grande Ronde River spring Chinook hatchery programs are components of the Lower Snake River Compensation Plan (LSRCP), funded through the U.S. Fish and Wildlife Service (USFWS), ...

Citation

16289. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2015 Annual Progress Report

Abstract -- The Imnaha and Grande Ronde River spring Chinook hatchery programs are components of the Lower Snake River Compensation Plan (LSRCP), funded through the U.S. Fish and Wildlife Service (USFWS), ...

Citation

16290. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2014 Annual Progress Report

Abstract -- The Imnaha and Grande Ronde River spring Chinook hatchery programs are components of the Lower Snake River Compensation Plan (LSRCP), funded through the U.S. Fish and Wildlife Service (USFWS), ...

Citation

16291. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2013 Annual Progress Report

Abstract -- The Imnaha and Grande Ronde River spring Chinook hatchery programs are components of the Lower Snake River Compensation Plan (LSRCP), funded through the U.S. Fish and Wildlife Service (USFWS), ...

Citation

16292. [Article] Status and Distribution of Native Fishes in the Goose Lake Basin Information Reports number 2008-02

Abstract -- This study describes the current distribution of the nine native fish species in the Oregon portion of the Goose Lake basin (Lake County): Goose Lake redband trout Oncorhynchus mykiss ssp., ...

Citation

16293. [Image] Evaluation of site specific restoration projects for the entire Klamath River basin


	DOCS I 49.107: 89 ( 1.1) 89( 1.1) EVALUATION OF SITE SPECIFIC RESTORATION PROJECTS FOR THE ENTIRE KLAMATH RIVER BASIN. 1989 Klamath Field Review Comments The following comments are based primarily upon ...
	Citation Citation Citation Abstract Copy Title: Evaluation of site specific restoration projects for the entire Klamath River basin Year: 1989, 2005 DOCS I 49.107: 89 ( 1.1) 89( 1.1) EVALUATION OF SITE SPECIFIC RESTORATION PROJECTS FOR THE ENTIRE KLAMATH RIVER BASIN. 1989 Klamath Field Review Comments The following comments are based primarily upon field observations made by Scott Downie and Andy Kier during the summer and autumn of 1989, Some of the review was made accompanied by personnel responsible for the projects and their comments are incorporated as well. In many streams individual project sites are linked and/ or similar in nature. This review generalizes these in its comments and ratings, but notes exceptions where required. Grades A- F were assigned, but like all grades lacking set criteria and good base- line information, they are somewhat subjective. Evaluations were based upon the observed or perceived physical response mf. de by the stream to the project, whether or not the project satisfied the objectives of the proposal, and whether or not the project appeared to have durable structure and function without maintenance or modification. Biological evaluation was impossible except to note observed fish at the time of the review. Cost effectiveness is again somewhat subjective without more front- end information, but based upon personal experience an attempt to measure product for cost entered into grade assignment. GENERAL: 1000, 1001, 1003: The racks on Bogus Crk, Scott R. & Shasta R were all operational Summer 1989. 1002: The Salmon R. weir operations were modified during our review period in response to public input: 1. The trap and weir will be staffed 24 hrs/ day. 2. Weir and trap operations will cease at 73 F. 3. Fishing will not be allowed below weir. 4. An alternate site will be developed ASAP. LOWER KLAMATH SUBBASIN: Ah Pah Creek ( 11006, 07, 08, 09, 10, 18-$ 123,928): A CCC, DFG, & Simpson Timber Co. project to provide improved access for adults into upper Ah Pah Crk., and to control sedimentation from failing banks in the treatment area. In Oct. 1989, the Hewitt Ramp structures were successfully passing coho and steelhead adults and juveni'es through a previous adult barrier section. Large wood and boulder cover elements had been placed in the associated pools. Treated banks were armored with rock filled gabions and planted with alder, willow and conifers. No evidence of sediment production to the stream from these treated slopes was observed. The workmanship and construction are sturdyand of high quality. Grade A. { Since we visited Ah Pah Crk. the day after the RNP bypass failure, the stream was loaded with suspended sediments) 1990 - Review Comments- Bluff Creek ( 11022, 23, 24, 31, 32-$ 212,000): Access provided through lower Bluff Crk's former barrier section is still passing adults and juveniles following the Feb. 1986 flood event. The boulder weirs and boulder clusters near the yearling rearing facility are providing limited spawning improvement, but they do contain pockets of gravel utilized by spawners. Both the weirs and clusters have provided some good quality summer rearing habitats, and also refuge areas during winter flows. Two cluster groups are now buried under large streambank failures. These events could have been exacerbated by the placement of the boulders too close to the now failed right bank. No large wood or brush cover elements were utilized in the structures, although some were available. Personnel explained that the extreme velocities and power at high discharges prevented incorporating these organic components into their instream structures on Bluff Crk, Grade C. Camp Creek ( 11029, 30-$ 125,000): Six boulder weirs were constructed by USFS to trap spawning gravels. Two of the six weirs are now scattered boulder clusters, having been rearranged by the stream. The surviving weirs have provided gravels and are being used by fish. The boulder groups, both designed and incidental, are providing some good quality rearing habitats and some pockets of gravel used for spawning salmonids. 3rade C. Cappell Creek ( 11027-$ 125,000): BIA artificial propagation project. Project has operated for one year. It has released 17,035 CWT Chinook. Typical of the lower river hatchery programs, securing desired numbers of late running chinook broodstocks is very difficult. A lot of money in terms of fry produced, but the facility start- up costs are now over and the annual cost will be much less than the initial investment. Grade C. Hunter Creek ( 11001, 11002, 11013-$ 19,328): A CCC, DFG, and Simpson project to improve Hunter Creek on a basin scale. CCC now have a thorough instream assessment and instream structure plan prepared by Clearwater Biostudies, inc. under contract to them. Instream structure work is now underway by CCC crews. The construction is of excellent quality and design. All upper stream barrier work is now completed. The dry lower reaches of the stream pose a dewatered, complete barrier to all adults running before early November in most years ( T. Payne, 1989). Some concern over future land management's effect on the stream in the event of a major flood occurrence. Grade B. McGarvey Creek ( 11025, 11014, 11003-$ 24,264): Status of the hatch box project is not known. The barrier work is all done and passing fish. Grade C. - Review Comments- Pecwan Creek ( 11021, 11036, 11028-$ 50,000): A total of 21,626 yearling chinook were released from 1982- 84 from this facility* They were from Iron Gate stocks and deemed not suitable for the restocking goals of the project area. Since 1985, the facility's production is not well documented, but 27,000 for the period 1985- 88 is estimated. None of the releases from this site have been CWT. The Pecwan site has been used as a broodstock source for Cappell Creek as well. Grade D. Red Cap Creek ( 11033, 34, 35-$ 70,000): USFS project has produced some impressive results. Failing banks have been armored and vegetated. A series of over thirty boulder weirs and clusters have provided some high quality spawning and rearing habitats. Large wood cover elements have been used somewhat in the project. The project reach is in a stream section of former generally poor habitats and low utilization by salmonids; they were abundant during our visits. There is a yearling pond adjacent to the treatment section. Grade A. Richardson Creek ( 11026-$ 25,200): This project removed a barrier to salmonids and is functional. Seemed expensive. Grade C. Salt Creek ( 11000, 11012-$ 18,944): CCC successfully stabilized failing banks. All barrier work is completed and functional. One of the few upslope erosion control projects in the review has controlled the sediment output from the roadway. There is a lot of product here for the money. Grade A. Surpur Creek ( 11005-$ 3,456): CCC removed barriers at a bargain price. Still functional. Grade A. Tarup Creek ( 11004, 11011, 11015, 16, 17-$ 77,024): CCC has a plan for the creek and instream treatments done under contract by Inter- Fluv Inc. The work outlined in the plan is now completed, and is of very high quality and design for the most part. The work involved barrier modification, instream structures, revegetation upslope as well in the riparian zone, and some upslope erosion control ( one site upslope was quite major, in fact). Tarup, regardless of all these improvements, has a low flow access problem in its delta. Grade B. Pine Creek ( 10019, 20-$- 0-): Not reviewed. Various streams ( 11019- 20-$ 550,000): This is the CCC operation fund for the Lower Klamath program. This ongoing general fund was not deemed suitable for field review or rating. However, our general observation of the CCC/ DFG Lower Klamath program has certainly produced a positive impression of their work and approach. - Review Comments- MIDDLE KLAMATH SUBBASIN: Beaver Creek ( 6000- 05, 6035, 6053, 6065, 6066-$ 124,400): The boulder cluster groups and weirs constructed on Beaver Creek are not well utilized at this time. Silts and sediments nave impacted the quality of the gravel associated with the structures to the extent that some cementing has occurred. Therefore, it is believed that utilization by spawners has also been effected. The structures designed for the provision of rearing habitats have done better, and some of course do both, some neither. Grade C, The rearing facility ( 6035) was closed in 1985, but there is now talk of re- opening it. 1980- 84 releases averaged 29,423 yearling chinook of Iron Gate origin. Grade C. The gravel seeding occurred in 1985 ( 6052) and no evaluation was considered possible in 1989, nor was any proffered by staff. The two screens ( 6065- 66) are functional, but require regular upkeep and periodic thorough maintenance. Grade B. Bluff Creek ( 6036-$- 0-): This is one of the Klamath system's highest production cooperative rearing facilities. It has averaged 66,462 chinook yearlings for the past three years. These fish are of Iron Gate origin. Although adult runs are up in Bluff Creek, there is little baseline data, and until the current brood no CWT's were done on the ponded fish. Grade B. Bogus Creek ( 6046- 47, 6053- 54, 6061-$ 94,750): Bogus Creek is heavily utilized by naturally spawning chinook of Iron Gate Hatchery origin as well as by stocks of its own. The projects designed to provide more and/ or better gravels for these fish have met with apparent success, since in almost all cases the projects are used by the spawners, but so is everything else. What that means in real incremental gains that can be credited to particular habitat treatments is therefore difficult to assess. CWT and DSM evaluation programs are ongoing. Grade C. Camp Creek ( 6037-$- 0-): This rearing facility switched from Iron Gate chinook stocks to natal stocks in 1987. Yearling releases dropped from an average of 27,533 to 14,573 after the change. This can be attributed to the difficulty in trapping adults in an open, high discharge system. Still, the fact that they are now utilizing later running stocks that are adapted to Camp Creek's flow regime and conditions counts for a great deal. The natal brood have been marked with alternating maxillary clips ( right one year, left the next) prior to release and some have been recovered as adults. Grade B+. China Creek ( 6008- 09-$ 9,300): Not reviewed. Report is that the access is good throughout the stream now. No report on the status of the structures. - Review Comments- Clear Creek ( 6010, 6068- 69-$ 66,400): Fish and Game's barrier removal is providing access successfully. Report is that access is good throughout Clear Creek at this time. Grade B. Coon Creek ( 6056-$ 30,000): This ladder passes steelhead, but DFG is not certain about coho. It also requires some light upkeep. Grade B. Cottonwood Creek ( 6049-$ 22,966): Gravel placed on these weirs needs to be re- seeded periodically at the cost of $ 2,000 each time. Grade D. ( 6057-$ 6,000): Not reviewed. ( 6055-$ 5,000): Ladder is on line and working well. Grade B. ( 6058- 60-$ 29,500): These screens are all on line and operational, but require light periodic maintenance which is conducted by the Yreka Screen Shop on a rotating basis. Grade B. ( 6070-$ 1,200): The potholes blasted to trap gravel have trapped sand instead, so the goal of creating spawning habitat was not met. However, fry usage and survival seem to be good in the resultant pools. Not a high cost project. Grade C. ( Total Cottonwood Creek budget: $ 64,666) Di1lon Creek ( 6071-$ 5,000): This functional project opened five miles of good habitat now utilized by steelhead and Chinook. Grade A. Doolittle Creek ( 6011-$ 2,300) : The treated log jam has not reformed and access is still good for steelhead. Grade C. Elk Creek ( 6012- 14-$ 41,000): The boulder weirs and clusters are now all installed and need flows for evaluation of performance. ( 6034, 6045-$ 10,000) : The washout pond has averaged 31,205 released Iron Gate chinook yearlings since 1984. Grade B. ( Total Elk Creek budget: $ 51,000) Grider Creek ( 6015- 16, 6038-$ 18,500): The falls are now passing fish successfully. Grade A. The boulder weirs have been successful in trapping spawning gravel and are being used by chinook. Grade A. The ponds have grown an average of 34,426 Iron Gate chinook yearlings since 1987. Grade B. Horse Creek ( 6062- 64, 6074-$ 35,000): The three screens are installed and operational, but require light maintenance. Yreka Screen Shop provides this on an alternating basis. Grade B. The log jam is no longer an access problem. Grade A. ( Extant diversion dam is a major problem on this creek) Humbug Creek ( 6017- 18-$ 5,300): The boulder weirs are not successful and are physically failing. Grade F. The log weirs have worked well and are providing spawning and rearing habitat. Grade A. In any event, ten miles of good quality habitat are blocked to salmonids by dredge tailings in lower Humbug Creek. - Review Comments- Independence Creek ( 6019-$ 5,000): The stream's mouth is still open and fish access it. Grade B. Indian Creek ( 6006, 6020- 28, 6039- 40, 6067, 6072~$ 200,600): AH modified former barriers are now passing fish. Grade A. The recent instream structures all appear to be performing to design; biological evaluation is underway now. Grade B. The spawning channel is used extensively by steelhead, and to a lesser extent by coho, but not by chinook. It is also a maintenance item ( ie. supplemental gravel). Grade D. The rearing ponds have averaged 74,134 Iron Gate yearlings since 1985. Grade B. Irving Creek ( 6029-$ 9,300): The use of small boulders to construct inadequately sized structures resulted in no net gain from this project. Grade F. Iron Gate Hatchery ( 6033-$-?-): The hatchery is modifying its operations to better cope with problems associated with temperatures, density, and release timing according to the hatchery manager. Grade C. Badger Flat and Tree of Heaven ( 6050- 51-$ 136,000): These spawning channels have both been unsuccessful due to design flaws. They require constant maintenance which is not possible during usage. Gravel seeding is an ongoing project. Grade F. Little Bogus Creek ( 6048-$ 20,000): These seeded weirs were not reviewed, but they are reported to be intensely utilized by spawners. However, some maintenance is also required. Pearch Creek ( 6041-$- 0-): These ponds are operated by the Orleans Rod and Gun Club and have good public involvement and educational value. About 9,000 steelhead of Salmon River origin are reared here. A lot of enthusiasm and local stocks. Grade A. Red Cap Creek ( 6042-$- 0-): This rearing pond has averaged 37,862 Iron Gate chinook yearlings since 1985 and is operated in a system that has also had significant habitat improvement projects recently completed. A CWT program would help evaluate both of these aspects of the Red Cap Creek endeavor. Grade B. Seiad Creek ( 6030- 31, 6073-$ 5,100): The barrier project has been successful. Grade A. The weir projects were not found and therefore not reviewed. Thompson Creek ( 6032, 6043-$ 5,000): The rearing ponds were closed in 1985. The instream structures were not reviewed. West Branch Creek ( 6007-$ 5,500): The weirs are used by steelhead for spawning, according to local observers; they seem functional. Grade C. - Review Comments- Wilson Creek ( 6007-$- 0-): This private rearing facility was not reviewed. According to locals, it is not in use at this time. SALMON RIVER: Black Bear Creek ( 5000-$ 11,000): This USFS project successfully provided access for steelhead into the creek, and it is currently being utilized. Grade A. Kelly Gulch ( 5002- 03-$ 9,500): This project was not reviewed, but USFS staff reported that the barrier was still not passing all fish attempting to access the system. Their evaluation is underway now. Knownothing Creek ( 5004- 06, 5021-$ 153,114): The removal of the diversion dams and other barriers resulted, in doubling the chinook and coho runs into the creek. Grade A. The weirs ( 5006) were not completed at the time of the review. Delays were incurred because the rock was overshot resulting in boulders too small for the structures. Grade F. Nordheimer Creek ( 5007, 5008-$ 90,000): The log weirs ( 5007) failed. Grade F. The fishway ( 5008) is successful and passing fish. Grade A. Salmon River ( 5023, 5024-$ 8,000): This selective barrier was modified at a very reasonable cost and has improved access for al1 fish. Grade A. East Fork Salmon River ( 5013-$ 60,000): This project was not reviewed; USFS is evaluating now. South Fork Salmon River ( 5009- 12, 5014- 15, 5022, 5001-$ 176,200): ( 5009) This natal stock bioenhancement facility was located at a site with poor water temperature conditions for intense fish culture. Broodstock acquisition was also very difficult. The facility is now closed ( equipment will be relocated in the watershed, if possible). The project released 36,667 natal chinook smolts in the period from 1985 to 1987. Grade D. The boulder group projects were undergoing evaluation during the review period for biological response. The initial physical evaluation was not conclusive because many of the projects had not been subject to higher flows. Grade C. ( 5022) The " rough passage" area currently allows fish to pass without undue struggle. Grade B. ( 5001) The Blind Horse Creek weirs have not all been successful in providing spawning habitat. Many are trapping silt rather than spawning gravel. Rearing habitats are being provided by most of them, however. Grade D. - Review Comments- Specimen Creek ( 5016-$ 500): Steelhead now pass the treated log jam barrier. Another jam has formed above this site and requires monitoring and possible modification. Grade B. St. Claire Creek ( 5017- 20-$ 15,000): Steelhead now pass the modified barrier. The log weirs are holding gravel and in use by spawners. Juvenile cover is good associated with the weirs as well as the cover elements used in the project. The boulder weirs and clusters are also in place and in use. Grade A. SCOTT RIVER: Scott River and tribs. ( 4031- 4334 [ not inclusive]-$ 2, " 15,810) : These Soil Conservation District projects primarily involved placing rip- rap armor at 304 different sites in the upper Scott system. Not all were reviewed, and although the rock is stable and in place, many were found to lack streamside vegetation that would provide important shade and cover for the stream and aquatic life. Some others were buried in decomposed granite, sand or silt and therefore had little benefit for fish by way of providing complex micro- habitats. The value of these projects would be much greater if some of these items were addressed. Grade C. French Creek ( 4001, 4016- 18-$ 32,100): The sediment check dam initially filled in one storm event. It was excavated but refilled during the next runoff event. A high maintenance approach that treats the symptoms of the watershed's chronic erosion problem. Grade F. The screens are all in place and functional, but are dependent upon periodic light upkeep provided by the Yreka Screen Shop. Grade B. Kelsey Creek ( 4002- 04-$ 147,500): The weirs work well and are used by all species for spawning and rearing. Grade A. The USFS spawning channel has not performed as hoped. Problems have occurred relating to channel liner failure. The average number of pairs using the channel during the period 1985- 88 were: nine chinook, three coho, and twelve steelhead. In 1989 no usage was observed. It is also a very costly installation. Grade D-. Kidder Creek ( 4020- 21-$ 26,000): Both screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Patterson Creek ( 4019-$ 9,000): This screen is in place and functional, but is dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. - Review Comments- Scott River ( 4005- 06, 4012- 15-$ 94,800): Although the gravels were ' cleaned' the sedimentation problem returned the next year, This treatment does not address the problem, but rather the symptoms and would require constant maintenance. Grade F. The boulder groups were not installed after gauging the rapid sedimentation rate. The four screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. East Fork Scott River ( 4010- 11-$ 20,000): These two screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Shakleford Creek ( 4009, 4022- 4030 incl., 4323, 4329-$ 343,720): ( 4009) The bank armor was not surveyed, but is reported to be stabilizing the soft banks. The fishery benefits are not known, ( 4022- 30) These nine screens are in place and functional, but are dependent upon periodic maintenance provided by tne Yreka Screen Shop, Grade B. ( 4323, 4329) The rip- rap bank armor is in place, but needs vegetation and cover elements added to increase fishery values. Grade C. Thomkins Creek ( 4007- 08-$ 6,500): The weirs are installed but are not highly utilized because of the recruited fine sediments now accumulated on them. Grade D. The fishway has provided access and is currently functional. Grade B. SHASTA RIVER: Parks Creek ( 3018-$ 42,000): These four screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Shasta River ( 3000- 04, 3005- 08, 3009- 17-$ 519,000): ( 3000- 04) These weirs have deteriorated over the past few years due to the use of undersized boulders in construction. Only about 10% of the effective structures remain. In 1989 only 32 redds were observed on the weirs. Very expensive ($ 363,000) spawning gravel. Grade D. The four fishways ( 3005- 08-$ 17,000) are all currently passing fish. Grade B. The nine screens ( 3009- 17-$ 139,000) are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. 12 0140402500 UPPER KLAMATH RIVER: Fal1 Creek ( 2000-$- 0-): The Fall Creek hatchery facility is on line and ready to augment Iron Gate's production. The site has very good water quality and can be instrumental in relieving crowding problems at Iron Gate. Title: Evaluation of site specific restoration projects for the entire Klamath River basin Year: 1989, 2005 DOCS I 49.107: 89 ( 1.1) 89( 1.1) EVALUATION OF SITE SPECIFIC RESTORATION PROJECTS FOR THE ENTIRE KLAMATH RIVER BASIN. 1989 Klamath Field Review Comments The following comments are based primarily upon field observations made by Scott Downie and Andy Kier during the summer and autumn of 1989, Some of the review was made accompanied by personnel responsible for the projects and their comments are incorporated as well. In many streams individual project sites are linked and/ or similar in nature. This review generalizes these in its comments and ratings, but notes exceptions where required. Grades A- F were assigned, but like all grades lacking set criteria and good base- line information, they are somewhat subjective. Evaluations were based upon the observed or perceived physical response mf. de by the stream to the project, whether or not the project satisfied the objectives of the proposal, and whether or not the project appeared to have durable structure and function without maintenance or modification. Biological evaluation was impossible except to note observed fish at the time of the review. Cost effectiveness is again somewhat subjective without more front- end information, but based upon personal experience an attempt to measure product for cost entered into grade assignment. GENERAL: 1000, 1001, 1003: The racks on Bogus Crk, Scott R. & Shasta R were all operational Summer 1989. 1002: The Salmon R. weir operations were modified during our review period in response to public input: 1. The trap and weir will be staffed 24 hrs/ day. 2. Weir and trap operations will cease at 73 F. 3. Fishing will not be allowed below weir. 4. An alternate site will be developed ASAP. LOWER KLAMATH SUBBASIN: Ah Pah Creek ( 11006, 07, 08, 09, 10, 18-$ 123,928): A CCC, DFG, & Simpson Timber Co. project to provide improved access for adults into upper Ah Pah Crk., and to control sedimentation from failing banks in the treatment area. In Oct. 1989, the Hewitt Ramp structures were successfully passing coho and steelhead adults and juveni'es through a previous adult barrier section. Large wood and boulder cover elements had been placed in the associated pools. Treated banks were armored with rock filled gabions and planted with alder, willow and conifers. No evidence of sediment production to the stream from these treated slopes was observed. The workmanship and construction are sturdyand of high quality. Grade A. { Since we visited Ah Pah Crk. the day after the RNP bypass failure, the stream was loaded with suspended sediments) 1990 - Review Comments- Bluff Creek ( 11022, 23, 24, 31, 32-$ 212,000): Access provided through lower Bluff Crk's former barrier section is still passing adults and juveniles following the Feb. 1986 flood event. The boulder weirs and boulder clusters near the yearling rearing facility are providing limited spawning improvement, but they do contain pockets of gravel utilized by spawners. Both the weirs and clusters have provided some good quality summer rearing habitats, and also refuge areas during winter flows. Two cluster groups are now buried under large streambank failures. These events could have been exacerbated by the placement of the boulders too close to the now failed right bank. No large wood or brush cover elements were utilized in the structures, although some were available. Personnel explained that the extreme velocities and power at high discharges prevented incorporating these organic components into their instream structures on Bluff Crk, Grade C. Camp Creek ( 11029, 30-$ 125,000): Six boulder weirs were constructed by USFS to trap spawning gravels. Two of the six weirs are now scattered boulder clusters, having been rearranged by the stream. The surviving weirs have provided gravels and are being used by fish. The boulder groups, both designed and incidental, are providing some good quality rearing habitats and some pockets of gravel used for spawning salmonids. 3rade C. Cappell Creek ( 11027-$ 125,000): BIA artificial propagation project. Project has operated for one year. It has released 17,035 CWT Chinook. Typical of the lower river hatchery programs, securing desired numbers of late running chinook broodstocks is very difficult. A lot of money in terms of fry produced, but the facility start- up costs are now over and the annual cost will be much less than the initial investment. Grade C. Hunter Creek ( 11001, 11002, 11013-$ 19,328): A CCC, DFG, and Simpson project to improve Hunter Creek on a basin scale. CCC now have a thorough instream assessment and instream structure plan prepared by Clearwater Biostudies, inc. under contract to them. Instream structure work is now underway by CCC crews. The construction is of excellent quality and design. All upper stream barrier work is now completed. The dry lower reaches of the stream pose a dewatered, complete barrier to all adults running before early November in most years ( T. Payne, 1989). Some concern over future land management's effect on the stream in the event of a major flood occurrence. Grade B. McGarvey Creek ( 11025, 11014, 11003-$ 24,264): Status of the hatch box project is not known. The barrier work is all done and passing fish. Grade C. - Review Comments- Pecwan Creek ( 11021, 11036, 11028-$ 50,000): A total of 21,626 yearling chinook were released from 1982- 84 from this facility* They were from Iron Gate stocks and deemed not suitable for the restocking goals of the project area. Since 1985, the facility's production is not well documented, but 27,000 for the period 1985- 88 is estimated. None of the releases from this site have been CWT. The Pecwan site has been used as a broodstock source for Cappell Creek as well. Grade D. Red Cap Creek ( 11033, 34, 35-$ 70,000): USFS project has produced some impressive results. Failing banks have been armored and vegetated. A series of over thirty boulder weirs and clusters have provided some high quality spawning and rearing habitats. Large wood cover elements have been used somewhat in the project. The project reach is in a stream section of former generally poor habitats and low utilization by salmonids; they were abundant during our visits. There is a yearling pond adjacent to the treatment section. Grade A. Richardson Creek ( 11026-$ 25,200): This project removed a barrier to salmonids and is functional. Seemed expensive. Grade C. Salt Creek ( 11000, 11012-$ 18,944): CCC successfully stabilized failing banks. All barrier work is completed and functional. One of the few upslope erosion control projects in the review has controlled the sediment output from the roadway. There is a lot of product here for the money. Grade A. Surpur Creek ( 11005-$ 3,456): CCC removed barriers at a bargain price. Still functional. Grade A. Tarup Creek ( 11004, 11011, 11015, 16, 17-$ 77,024): CCC has a plan for the creek and instream treatments done under contract by Inter- Fluv Inc. The work outlined in the plan is now completed, and is of very high quality and design for the most part. The work involved barrier modification, instream structures, revegetation upslope as well in the riparian zone, and some upslope erosion control ( one site upslope was quite major, in fact). Tarup, regardless of all these improvements, has a low flow access problem in its delta. Grade B. Pine Creek ( 10019, 20-$- 0-): Not reviewed. Various streams ( 11019- 20-$ 550,000): This is the CCC operation fund for the Lower Klamath program. This ongoing general fund was not deemed suitable for field review or rating. However, our general observation of the CCC/ DFG Lower Klamath program has certainly produced a positive impression of their work and approach. - Review Comments- MIDDLE KLAMATH SUBBASIN: Beaver Creek ( 6000- 05, 6035, 6053, 6065, 6066-$ 124,400): The boulder cluster groups and weirs constructed on Beaver Creek are not well utilized at this time. Silts and sediments nave impacted the quality of the gravel associated with the structures to the extent that some cementing has occurred. Therefore, it is believed that utilization by spawners has also been effected. The structures designed for the provision of rearing habitats have done better, and some of course do both, some neither. Grade C, The rearing facility ( 6035) was closed in 1985, but there is now talk of re- opening it. 1980- 84 releases averaged 29,423 yearling chinook of Iron Gate origin. Grade C. The gravel seeding occurred in 1985 ( 6052) and no evaluation was considered possible in 1989, nor was any proffered by staff. The two screens ( 6065- 66) are functional, but require regular upkeep and periodic thorough maintenance. Grade B. Bluff Creek ( 6036-$- 0-): This is one of the Klamath system's highest production cooperative rearing facilities. It has averaged 66,462 chinook yearlings for the past three years. These fish are of Iron Gate origin. Although adult runs are up in Bluff Creek, there is little baseline data, and until the current brood no CWT's were done on the ponded fish. Grade B. Bogus Creek ( 6046- 47, 6053- 54, 6061-$ 94,750): Bogus Creek is heavily utilized by naturally spawning chinook of Iron Gate Hatchery origin as well as by stocks of its own. The projects designed to provide more and/ or better gravels for these fish have met with apparent success, since in almost all cases the projects are used by the spawners, but so is everything else. What that means in real incremental gains that can be credited to particular habitat treatments is therefore difficult to assess. CWT and DSM evaluation programs are ongoing. Grade C. Camp Creek ( 6037-$- 0-): This rearing facility switched from Iron Gate chinook stocks to natal stocks in 1987. Yearling releases dropped from an average of 27,533 to 14,573 after the change. This can be attributed to the difficulty in trapping adults in an open, high discharge system. Still, the fact that they are now utilizing later running stocks that are adapted to Camp Creek's flow regime and conditions counts for a great deal. The natal brood have been marked with alternating maxillary clips ( right one year, left the next) prior to release and some have been recovered as adults. Grade B+. China Creek ( 6008- 09-$ 9,300): Not reviewed. Report is that the access is good throughout the stream now. No report on the status of the structures. - Review Comments- Clear Creek ( 6010, 6068- 69-$ 66,400): Fish and Game's barrier removal is providing access successfully. Report is that access is good throughout Clear Creek at this time. Grade B. Coon Creek ( 6056-$ 30,000): This ladder passes steelhead, but DFG is not certain about coho. It also requires some light upkeep. Grade B. Cottonwood Creek ( 6049-$ 22,966): Gravel placed on these weirs needs to be re- seeded periodically at the cost of $ 2,000 each time. Grade D. ( 6057-$ 6,000): Not reviewed. ( 6055-$ 5,000): Ladder is on line and working well. Grade B. ( 6058- 60-$ 29,500): These screens are all on line and operational, but require light periodic maintenance which is conducted by the Yreka Screen Shop on a rotating basis. Grade B. ( 6070-$ 1,200): The potholes blasted to trap gravel have trapped sand instead, so the goal of creating spawning habitat was not met. However, fry usage and survival seem to be good in the resultant pools. Not a high cost project. Grade C. ( Total Cottonwood Creek budget: $ 64,666) Di1lon Creek ( 6071-$ 5,000): This functional project opened five miles of good habitat now utilized by steelhead and Chinook. Grade A. Doolittle Creek ( 6011-$ 2,300) : The treated log jam has not reformed and access is still good for steelhead. Grade C. Elk Creek ( 6012- 14-$ 41,000): The boulder weirs and clusters are now all installed and need flows for evaluation of performance. ( 6034, 6045-$ 10,000) : The washout pond has averaged 31,205 released Iron Gate chinook yearlings since 1984. Grade B. ( Total Elk Creek budget: $ 51,000) Grider Creek ( 6015- 16, 6038-$ 18,500): The falls are now passing fish successfully. Grade A. The boulder weirs have been successful in trapping spawning gravel and are being used by chinook. Grade A. The ponds have grown an average of 34,426 Iron Gate chinook yearlings since 1987. Grade B. Horse Creek ( 6062- 64, 6074-$ 35,000): The three screens are installed and operational, but require light maintenance. Yreka Screen Shop provides this on an alternating basis. Grade B. The log jam is no longer an access problem. Grade A. ( Extant diversion dam is a major problem on this creek) Humbug Creek ( 6017- 18-$ 5,300): The boulder weirs are not successful and are physically failing. Grade F. The log weirs have worked well and are providing spawning and rearing habitat. Grade A. In any event, ten miles of good quality habitat are blocked to salmonids by dredge tailings in lower Humbug Creek. - Review Comments- Independence Creek ( 6019-$ 5,000): The stream's mouth is still open and fish access it. Grade B. Indian Creek ( 6006, 6020- 28, 6039- 40, 6067, 6072~$ 200,600): AH modified former barriers are now passing fish. Grade A. The recent instream structures all appear to be performing to design; biological evaluation is underway now. Grade B. The spawning channel is used extensively by steelhead, and to a lesser extent by coho, but not by chinook. It is also a maintenance item ( ie. supplemental gravel). Grade D. The rearing ponds have averaged 74,134 Iron Gate yearlings since 1985. Grade B. Irving Creek ( 6029-$ 9,300): The use of small boulders to construct inadequately sized structures resulted in no net gain from this project. Grade F. Iron Gate Hatchery ( 6033-$-?-): The hatchery is modifying its operations to better cope with problems associated with temperatures, density, and release timing according to the hatchery manager. Grade C. Badger Flat and Tree of Heaven ( 6050- 51-$ 136,000): These spawning channels have both been unsuccessful due to design flaws. They require constant maintenance which is not possible during usage. Gravel seeding is an ongoing project. Grade F. Little Bogus Creek ( 6048-$ 20,000): These seeded weirs were not reviewed, but they are reported to be intensely utilized by spawners. However, some maintenance is also required. Pearch Creek ( 6041-$- 0-): These ponds are operated by the Orleans Rod and Gun Club and have good public involvement and educational value. About 9,000 steelhead of Salmon River origin are reared here. A lot of enthusiasm and local stocks. Grade A. Red Cap Creek ( 6042-$- 0-): This rearing pond has averaged 37,862 Iron Gate chinook yearlings since 1985 and is operated in a system that has also had significant habitat improvement projects recently completed. A CWT program would help evaluate both of these aspects of the Red Cap Creek endeavor. Grade B. Seiad Creek ( 6030- 31, 6073-$ 5,100): The barrier project has been successful. Grade A. The weir projects were not found and therefore not reviewed. Thompson Creek ( 6032, 6043-$ 5,000): The rearing ponds were closed in 1985. The instream structures were not reviewed. West Branch Creek ( 6007-$ 5,500): The weirs are used by steelhead for spawning, according to local observers; they seem functional. Grade C. - Review Comments- Wilson Creek ( 6007-$- 0-): This private rearing facility was not reviewed. According to locals, it is not in use at this time. SALMON RIVER: Black Bear Creek ( 5000-$ 11,000): This USFS project successfully provided access for steelhead into the creek, and it is currently being utilized. Grade A. Kelly Gulch ( 5002- 03-$ 9,500): This project was not reviewed, but USFS staff reported that the barrier was still not passing all fish attempting to access the system. Their evaluation is underway now. Knownothing Creek ( 5004- 06, 5021-$ 153,114): The removal of the diversion dams and other barriers resulted, in doubling the chinook and coho runs into the creek. Grade A. The weirs ( 5006) were not completed at the time of the review. Delays were incurred because the rock was overshot resulting in boulders too small for the structures. Grade F. Nordheimer Creek ( 5007, 5008-$ 90,000): The log weirs ( 5007) failed. Grade F. The fishway ( 5008) is successful and passing fish. Grade A. Salmon River ( 5023, 5024-$ 8,000): This selective barrier was modified at a very reasonable cost and has improved access for al1 fish. Grade A. East Fork Salmon River ( 5013-$ 60,000): This project was not reviewed; USFS is evaluating now. South Fork Salmon River ( 5009- 12, 5014- 15, 5022, 5001-$ 176,200): ( 5009) This natal stock bioenhancement facility was located at a site with poor water temperature conditions for intense fish culture. Broodstock acquisition was also very difficult. The facility is now closed ( equipment will be relocated in the watershed, if possible). The project released 36,667 natal chinook smolts in the period from 1985 to 1987. Grade D. The boulder group projects were undergoing evaluation during the review period for biological response. The initial physical evaluation was not conclusive because many of the projects had not been subject to higher flows. Grade C. ( 5022) The " rough passage" area currently allows fish to pass without undue struggle. Grade B. ( 5001) The Blind Horse Creek weirs have not all been successful in providing spawning habitat. Many are trapping silt rather than spawning gravel. Rearing habitats are being provided by most of them, however. Grade D. - Review Comments- Specimen Creek ( 5016-$ 500): Steelhead now pass the treated log jam barrier. Another jam has formed above this site and requires monitoring and possible modification. Grade B. St. Claire Creek ( 5017- 20-$ 15,000): Steelhead now pass the modified barrier. The log weirs are holding gravel and in use by spawners. Juvenile cover is good associated with the weirs as well as the cover elements used in the project. The boulder weirs and clusters are also in place and in use. Grade A. SCOTT RIVER: Scott River and tribs. ( 4031- 4334 [ not inclusive]-$ 2, " 15,810) : These Soil Conservation District projects primarily involved placing rip- rap armor at 304 different sites in the upper Scott system. Not all were reviewed, and although the rock is stable and in place, many were found to lack streamside vegetation that would provide important shade and cover for the stream and aquatic life. Some others were buried in decomposed granite, sand or silt and therefore had little benefit for fish by way of providing complex micro- habitats. The value of these projects would be much greater if some of these items were addressed. Grade C. French Creek ( 4001, 4016- 18-$ 32,100): The sediment check dam initially filled in one storm event. It was excavated but refilled during the next runoff event. A high maintenance approach that treats the symptoms of the watershed's chronic erosion problem. Grade F. The screens are all in place and functional, but are dependent upon periodic light upkeep provided by the Yreka Screen Shop. Grade B. Kelsey Creek ( 4002- 04-$ 147,500): The weirs work well and are used by all species for spawning and rearing. Grade A. The USFS spawning channel has not performed as hoped. Problems have occurred relating to channel liner failure. The average number of pairs using the channel during the period 1985- 88 were: nine chinook, three coho, and twelve steelhead. In 1989 no usage was observed. It is also a very costly installation. Grade D-. Kidder Creek ( 4020- 21-$ 26,000): Both screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Patterson Creek ( 4019-$ 9,000): This screen is in place and functional, but is dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. - Review Comments- Scott River ( 4005- 06, 4012- 15-$ 94,800): Although the gravels were ' cleaned' the sedimentation problem returned the next year, This treatment does not address the problem, but rather the symptoms and would require constant maintenance. Grade F. The boulder groups were not installed after gauging the rapid sedimentation rate. The four screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. East Fork Scott River ( 4010- 11-$ 20,000): These two screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Shakleford Creek ( 4009, 4022- 4030 incl., 4323, 4329-$ 343,720): ( 4009) The bank armor was not surveyed, but is reported to be stabilizing the soft banks. The fishery benefits are not known, ( 4022- 30) These nine screens are in place and functional, but are dependent upon periodic maintenance provided by tne Yreka Screen Shop, Grade B. ( 4323, 4329) The rip- rap bank armor is in place, but needs vegetation and cover elements added to increase fishery values. Grade C. Thomkins Creek ( 4007- 08-$ 6,500): The weirs are installed but are not highly utilized because of the recruited fine sediments now accumulated on them. Grade D. The fishway has provided access and is currently functional. Grade B. SHASTA RIVER: Parks Creek ( 3018-$ 42,000): These four screens are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. Shasta River ( 3000- 04, 3005- 08, 3009- 17-$ 519,000): ( 3000- 04) These weirs have deteriorated over the past few years due to the use of undersized boulders in construction. Only about 10% of the effective structures remain. In 1989 only 32 redds were observed on the weirs. Very expensive ($ 363,000) spawning gravel. Grade D. The four fishways ( 3005- 08-$ 17,000) are all currently passing fish. Grade B. The nine screens ( 3009- 17-$ 139,000) are in place and functional, but are dependent upon periodic maintenance provided by the Yreka Screen Shop. Grade B. 12 0140402500 UPPER KLAMATH RIVER: Fal1 Creek ( 2000-$- 0-): The Fall Creek hatchery facility is on line and ready to augment Iron Gate's production. The site has very good water quality and can be instrumental in relieving crowding problems at Iron Gate.

16294. [Image] Scientific disagreement regarding coho salmon status under the ESA


	Internal memo between staff of the National Marine Fisheries Service dated September 27, 1996 which summarizes the issues of scientific disagreement related to the listing of three coho salmon as an endangered ...
	Citation Citation Citation Abstract Copy Title: Scientific disagreement regarding coho salmon status under the ESA Author: Varanasi, Usha; Tillman, Michael Year: 1996, 2005 Internal memo between staff of the National Marine Fisheries Service dated September 27, 1996 which summarizes the issues of scientific disagreement related to the listing of three coho salmon as an endangered species Title: Scientific disagreement regarding coho salmon status under the ESA Author: Varanasi, Usha; Tillman, Michael Year: 1996, 2005 Internal memo between staff of the National Marine Fisheries Service dated September 27, 1996 which summarizes the issues of scientific disagreement related to the listing of three coho salmon as an endangered species

16295. [Article] Evaluating Coastal Protection Services Associated with Restoration Management of an Endangered Shorebird in Oregon, U.S.A.

Coastal sand dunes and beaches offer a variety of ecosystem services such as coastal protection, sand stabilization, species conservation, and recreation. However, the management and balance of ecosystem ...

Citation

16296. [Image] What You Need to Know About the U.S. Endangered Species Act


	Electronic resource; Title from title screen (viewed on Dec. 22, 2004); "3/98"
	Citation Citation Citation Abstract Copy Title: What You Need to Know About the U.S. Endangered Species Act Author: U. S. Fish and Wildlife Service. Office of Management Authority Year: 1998, 2006, 2005 Electronic resource; Title from title screen (viewed on Dec. 22, 2004); "3/98" Title: What You Need to Know About the U.S. Endangered Species Act Author: U. S. Fish and Wildlife Service. Office of Management Authority Year: 1998, 2006, 2005 Electronic resource; Title from title screen (viewed on Dec. 22, 2004); "3/98"

16297. [Image] Natural flow estimates for streams in the Klamath Basin


	"Open file report SW 04-001"
	Citation Citation Citation Abstract Copy Title: Natural flow estimates for streams in the Klamath Basin Author: Cooper, Richard M. Year: 2004, 2005 "Open file report SW 04-001" Title: Natural flow estimates for streams in the Klamath Basin Author: Cooper, Richard M. Year: 2004, 2005 "Open file report SW 04-001"

16298. [Image] Effects of water quality on growth of juvenile shortnose suckers, Chasmistes brevirostris (Catostomidae: Cypriniformes), from Upper Klamath Lake, Oregon


	One chapter of a seven chapter annual report from 1999 examining ecological issues regarding the shortnose and Lost River sucker populations in Upper Klamath Lake and Williamson River.
	Citation Citation Citation Abstract Copy Title: Effects of water quality on growth of juvenile shortnose suckers, Chasmistes brevirostris (Catostomidae: Cypriniformes), from Upper Klamath Lake, Oregon Author: Oregon Cooperative Wildlife Research Unit Year: 2000, 2005 One chapter of a seven chapter annual report from 1999 examining ecological issues regarding the shortnose and Lost River sucker populations in Upper Klamath Lake and Williamson River. Title: Effects of water quality on growth of juvenile shortnose suckers, Chasmistes brevirostris (Catostomidae: Cypriniformes), from Upper Klamath Lake, Oregon Author: Oregon Cooperative Wildlife Research Unit Year: 2000, 2005 One chapter of a seven chapter annual report from 1999 examining ecological issues regarding the shortnose and Lost River sucker populations in Upper Klamath Lake and Williamson River.

16299. [Image] Water quality conditions in Upper Klamath and Agency Lakes, Oregon, 2005


	Agency Lakes. Oregon. 2005 M.Wood By Gene R. Hoilman, Mary K. Lindenberg, and Tamara Abstract During June-October 2005, water quality data were collected from Upper Klamath and Agency Lakes In Oregon, ...
	Citation Citation Citation Abstract Copy Title: Water quality conditions in Upper Klamath and Agency Lakes, Oregon, 2005 Author: Hoilman, Gene R Year: 2008 Agency Lakes. Oregon. 2005 M.Wood By Gene R. Hoilman, Mary K. Lindenberg, and Tamara Abstract During June-October 2005, water quality data were collected from Upper Klamath and Agency Lakes In Oregon, and meteorological data were collected around and within Upper Klamath Lake. Data recorded at two continuous water quality monitors In Agency Lake showed similar temperature patterns throughout the field season, but data recorded at the northern site showed more day-to-day variability for dissolved oxygen concentration and saturation after late June and more day-to-day variability for pH and specific conductance values after mid-July. Data recorded from the northern and southern parts of Agency Lake showed more comparable day-to-day variability in dissolved oxygen concentrations and pH from September through the end of the monitoring period. For Upper Klamath Lake, seasonal (late July through early August) lows of dissolved oxygen concentrations and saturation were coincident with a seasonal low of pH values and seasonal highs of ammonia and orthophosphate concentrations, specific conductance values, and water temperatures. Patterns in these parameters, excluding water temperature, were associated with bloom dynamics of the cyanobacterium (blue-green alga) Aphanizomenonflos-aquae in Upper Klamath Lake. In Upper Klamath Lake, water temperature in excess of 28 degrees Celsius (a high stress threshold for Upper Klamath Lake suckers) was recorded only once at one site during the field season. Large areas of Upper Klamath Lake had periods of dissolved oxygen concentration of less than 4 milligrams per liter and pH value greater than 9.7, but these conditions were not persistent throughout days at most sites. Dissolved oxygen concentrations in Upper Klamath Lake on time scales of days and months appeared to be influenced, in part, by bathymetry and prevailing current flow patterns. Diel patterns of water column stratification were evident, even at the deepest sites. This diel pattern of stratification was attributable to diel wind speed patterns and the shallow nature of most of Upper Klamath Lake. Timing of the daily extreme values of dissolved oxygen concentration, pH, and water temperature was less distinct with increased water column depth. Chlorophyll a concentrations varied spatially and temporally throughout Upper Klamath Lake. Location greatly affected algal concentrations, in turn affecting nutrient and dissolved oxygen concentrations—some of the highest chlorophyll a concentrations were associated with the lowest dissolved oxygen concentrations and the highest un-ionized ammonia concentrations. The occurrence of the low dissolved oxygen and high un-ionized ammonia concentrations coincided with a decline in algae resulting from cell death, as rn.easu.red by concentrations of chlorophyll a. Dissolved oxygen production, rates in. experim.en.ts were as high as 1.47 milligrams of oxygen per liter per hour, and consumption rates were as much as -0.73 milligrams of oxygen per liter per hour. Dissolved oxygen, consumption rates measured in. this study were comparable to those measured in a 2002 Upper Klamath Lake study, and a higher rate of dissolved oxygen consumption was recorded in. dark bottles positioned higher in the water column. Data, though, inconclusive, indicated that a decreasing trend of dissolved oxygen productivity through July could have contributed to the decreasing dissolved oxygen concentrations and percent saturation recorded in Upper Klamath Lake during this time. Phytoplankton self-shading was evident from, a general inverse relation between depth of photic zone and chlorophyll a concentrations. This shading caused net dissolved oxygen consumption during daylight hours in lower parts of the water column that would otherwise have been in the photic zone. Meteorological data collected in and around Upper Klamath Lake showed that winds were likely to come from a broad range of westerly directions in the northern one-third of the lake, but tended to come from a narrow range of northwesterly directions over the main body of the lake farther south. Title: Water quality conditions in Upper Klamath and Agency Lakes, Oregon, 2005 Author: Hoilman, Gene R Year: 2008 Agency Lakes. Oregon. 2005 M.Wood By Gene R. Hoilman, Mary K. Lindenberg, and Tamara Abstract During June-October 2005, water quality data were collected from Upper Klamath and Agency Lakes In Oregon, and meteorological data were collected around and within Upper Klamath Lake. Data recorded at two continuous water quality monitors In Agency Lake showed similar temperature patterns throughout the field season, but data recorded at the northern site showed more day-to-day variability for dissolved oxygen concentration and saturation after late June and more day-to-day variability for pH and specific conductance values after mid-July. Data recorded from the northern and southern parts of Agency Lake showed more comparable day-to-day variability in dissolved oxygen concentrations and pH from September through the end of the monitoring period. For Upper Klamath Lake, seasonal (late July through early August) lows of dissolved oxygen concentrations and saturation were coincident with a seasonal low of pH values and seasonal highs of ammonia and orthophosphate concentrations, specific conductance values, and water temperatures. Patterns in these parameters, excluding water temperature, were associated with bloom dynamics of the cyanobacterium (blue-green alga) Aphanizomenonflos-aquae in Upper Klamath Lake. In Upper Klamath Lake, water temperature in excess of 28 degrees Celsius (a high stress threshold for Upper Klamath Lake suckers) was recorded only once at one site during the field season. Large areas of Upper Klamath Lake had periods of dissolved oxygen concentration of less than 4 milligrams per liter and pH value greater than 9.7, but these conditions were not persistent throughout days at most sites. Dissolved oxygen concentrations in Upper Klamath Lake on time scales of days and months appeared to be influenced, in part, by bathymetry and prevailing current flow patterns. Diel patterns of water column stratification were evident, even at the deepest sites. This diel pattern of stratification was attributable to diel wind speed patterns and the shallow nature of most of Upper Klamath Lake. Timing of the daily extreme values of dissolved oxygen concentration, pH, and water temperature was less distinct with increased water column depth. Chlorophyll a concentrations varied spatially and temporally throughout Upper Klamath Lake. Location greatly affected algal concentrations, in turn affecting nutrient and dissolved oxygen concentrations—some of the highest chlorophyll a concentrations were associated with the lowest dissolved oxygen concentrations and the highest un-ionized ammonia concentrations. The occurrence of the low dissolved oxygen and high un-ionized ammonia concentrations coincided with a decline in algae resulting from cell death, as rn.easu.red by concentrations of chlorophyll a. Dissolved oxygen production, rates in. experim.en.ts were as high as 1.47 milligrams of oxygen per liter per hour, and consumption rates were as much as -0.73 milligrams of oxygen per liter per hour. Dissolved oxygen, consumption rates measured in. this study were comparable to those measured in a 2002 Upper Klamath Lake study, and a higher rate of dissolved oxygen consumption was recorded in. dark bottles positioned higher in the water column. Data, though, inconclusive, indicated that a decreasing trend of dissolved oxygen productivity through July could have contributed to the decreasing dissolved oxygen concentrations and percent saturation recorded in Upper Klamath Lake during this time. Phytoplankton self-shading was evident from, a general inverse relation between depth of photic zone and chlorophyll a concentrations. This shading caused net dissolved oxygen consumption during daylight hours in lower parts of the water column that would otherwise have been in the photic zone. Meteorological data collected in and around Upper Klamath Lake showed that winds were likely to come from a broad range of westerly directions in the northern one-third of the lake, but tended to come from a narrow range of northwesterly directions over the main body of the lake farther south.

16300. [Image] Crater Lake National Park, Oregon: draft visitor services plan, environmental impact statement


	"November 1997."; Includes bibliographical references (155-163) and index
	Citation Citation Citation Abstract Copy Title: Crater Lake National Park, Oregon: draft visitor services plan, environmental impact statement Author: United States. National Park Service Year: 1997, 2008 "November 1997."; Includes bibliographical references (155-163) and index Title: Crater Lake National Park, Oregon: draft visitor services plan, environmental impact statement Author: United States. National Park Service Year: 1997, 2008 "November 1997."; Includes bibliographical references (155-163) and index

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16251. [Image] Crater Lake limnological studies 1986 annual report

16252. [Image] Crater Lake limnological studies 1987 annual report

16253. [Image] Crater Lake limnological studies 1990 annual report

16254. [Article] Restoring the Columbia River Estuary : Chinook Salmon Recovery and Invasive Species Management

16255. [Article] Factors affecting within-season and between-season breeding dispersal of burrowing owls in California

16256. [Article] DANCE AS COMMUNICATION: HOW HUMANS COMMUNICATE THROUGH DANCE AND PERCEIVE DANCE AS COMMUNICATION

16257. [Image] Irrigation system maintenance, groundwater quality, and improved production

16258. [Image] Genetic analysis of Klamath River green sturgeon (acipensar [i.e. acipenser] medirostris)

16259. [Image] The Water Report - Klamath update water purchase / release

16260. [Image] Conservation plan, Miller Lake lamprey, Lampetra (Entosphenus) minima : April, 2005

16261. [Image] A strategy for achieving healthy watersheds in Oregon

16262. [Article] Distribution and movements of Chinook salmon, Oncorhynchus tshawytscha, returning to the Yukon River basin

16263. [Image] Geology and ground-water resources of the Swan Lake-Yonna Valleys area, Klamath County, Oregon

16264. [Image] Critical Habitat Reform Act of 2004: report together with dissenting views (to accompany H.R. 2933) (including cost estimate of the Congressional Budget Office)

16265. [Image] Three great factors in Oregon's development

16266. [Image] Oregon Plan for Salmon and Watersheds biennial report, 2001-2003

16267. [Image] Reproductive biology and demographics of endangered Lost River and shortnose suckers in Upper Klamath Lake, Oregon

16268. [Image] Endangered Species Act of 1973 (as amended through December 2004)

16269. [Image] Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon

16270. [Image] The Water Report - Klamath coho salmon plan rejected: 9th circuit CA/OR

16271. [Article] The effects of habitat, climate, and Barred Owls on long-term demography of Northern Spotted Owls

16272. [Image] The effects of the Mazama tephra-falls

16273. [Article] Contemporary regional forest dynamics in the Pacific Northwest

16274. [Image] Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives

16275. [Image] The Water Report. Klamath Decisions: Court rulings on "takings" and BIOP/RPA sufficiency

16276. [Article] Trophic cascades and large mammals in the Yellowstone ecosystem

16277. [Article] Physical-Environmental Effects of Wave and Offshore Wind Energy Extraction: A Synthesis of Recent Oceanographic Research

16278. [Article] State Funding and Planning Mechanisms to Reduce Greenhouse Gas Emissions from the Transportation Sector

16279. [Article] Vegetation and Small Mammal Responses to Western Juniper (Juniperus occidentalis) Control in Eastern Oregon

16280. [Image] Baking Powder Can (Royal Baking Powder)

16281. [Image] Tomato Paste Tube (Montali Tomato Paste)

16282. [Article] Egalitarianism and separatism : a history of approaches in the provision of public recreation and leisure service for blacks, 1906-1972

16283. [Article] The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration

16284. [Article] Reproductive implications of parasitic infections and immune challenges in garter snakes

16285. [Article] Mixed-Severity Fire Effects on Biological Legacies and Vegetation Response in Pseudotsuga Forests of Western Oregon's Central Cascades, USA

16286. [Article] Mixed-conifer forests of central Oregon : structure, composition, history of establishment, and growth

16287. [Article] Genesis of some soils in the central western Cascades of Oregon

16288. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2016 Annual Progress Report

16289. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2015 Annual Progress Report

16290. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2014 Annual Progress Report

16291. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Harvest Monitoring - 2013 Annual Progress Report

16292. [Article] Status and Distribution of Native Fishes in the Goose Lake Basin Information Reports number 2008-02

16293. [Image] Evaluation of site specific restoration projects for the entire Klamath River basin

16294. [Image] Scientific disagreement regarding coho salmon status under the ESA

16295. [Article] Evaluating Coastal Protection Services Associated with Restoration Management of an Endangered Shorebird in Oregon, U.S.A.

16296. [Image] What You Need to Know About the U.S. Endangered Species Act

16297. [Image] Natural flow estimates for streams in the Klamath Basin

16298. [Image] Effects of water quality on growth of juvenile shortnose suckers, Chasmistes brevirostris (Catostomidae: Cypriniformes), from Upper Klamath Lake, Oregon

16299. [Image] Water quality conditions in Upper Klamath and Agency Lakes, Oregon, 2005

16300. [Image] Crater Lake National Park, Oregon: draft visitor services plan, environmental impact statement