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• 311. [Article] Status of Oregon Stocks of Coho Salmon, 2004 through 2008 Report Number: OPSW-ODFW-2009-3

  Abstract -- This report summarizes five years of monitoring status and trend in Oregon’s naturally spawning coho salmon (Oncorhynchus kisutch) populations. The five coho run years reported are 2004 through ...

  Citation × Citation Citation Abstract Copy Title: Status of Oregon Stocks of Coho Salmon, 2004 through 2008 Report Number: OPSW-ODFW-2009-3 Abstract -- This report summarizes five years of monitoring status and trend in Oregon’s naturally spawning coho salmon (Oncorhynchus kisutch) populations. The five coho run years reported are 2004 through 2008. Monitoring results include: abundance of naturally spawning coho; density of spawning coho; coho spawn timing; and proportion of hatchery (marked) coho in naturally spawning populations. These results are based on data from randomly selected spawning surveys, as well as other methods in areas without adequate random surveys. Results for coho standard spawning surveys, as well as spawning surveys for other species are covered in data summaries and reports posted on an Oregon Department of Fish and Wildlife (ODFW) web page (see: http://oregonstate.edu/dept/ODFW/spawn/index.htm). Monitoring occurs at three hierarchical spatial scales, as defined by the National Marine Fisheries Service (NMFS): Evolutionarily Significant Unit (ESU); Stratum; and coho Population. There are three coho ESU’s located entirely or partially within the State of Oregon: the Lower Columbia River (LCR) Coho ESU; the Oregon Coast (OC) Coho ESU; and the Southern Oregon/Northern California Coasts (SONCC) Coho ESU. This report summarizes results for coho populations in the portion of each ESU that is within the State of Oregon. In the Oregon portion of the LCR Coho ESU sufficient surveys were conducted to meet precision goals at the ESU level three out of the five sampling years. At the population complex scale, yearly precision goals were rarely met. Wild spawner abundance remained fairly stable over the five sampling years; hatchery abundance was more variable. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent at both the stratum and population scale. In the Oregon Coast ESU sufficient surveys were conducted to meet precision goals at the ESU level in all five sampling years, however at the population scale, precision goals were rarely met. Wild spawner abundance declined over the first four sampling years, but showed a significant increase in the fifth sampling year. The proportion of hatchery fish was generally low, but variable over the five sampling years. Only two populations, Salmon River and North Umpqua River, consistently had over 10% hatchery fish on the spawning grounds. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent. Inadequate funding and the need to update the GRTS sampling frame continue to hamper monitoring of the Oregon portion of the Southern Oregon/Northern California Coasts Coho ESU. In the Oregon portion of the ESU insufficient surveys were conducted to meet precision goals at the ESU level in any of the four years when GRTS surveys were done. However, estimates of wild coho spawners were obtained in all five years based on Huntley Park seining. Wild coho spawner abundance declined substantially over the five run years; but the proportion of hatchery coho spawning naturally was fairly low and stable. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent. Title: Status of Oregon Stocks of Coho Salmon, 2004 through 2008 Report Number: OPSW-ODFW-2009-3 Abstract -- This report summarizes five years of monitoring status and trend in Oregon’s naturally spawning coho salmon (Oncorhynchus kisutch) populations. The five coho run years reported are 2004 through 2008. Monitoring results include: abundance of naturally spawning coho; density of spawning coho; coho spawn timing; and proportion of hatchery (marked) coho in naturally spawning populations. These results are based on data from randomly selected spawning surveys, as well as other methods in areas without adequate random surveys. Results for coho standard spawning surveys, as well as spawning surveys for other species are covered in data summaries and reports posted on an Oregon Department of Fish and Wildlife (ODFW) web page (see: http://oregonstate.edu/dept/ODFW/spawn/index.htm). Monitoring occurs at three hierarchical spatial scales, as defined by the National Marine Fisheries Service (NMFS): Evolutionarily Significant Unit (ESU); Stratum; and coho Population. There are three coho ESU’s located entirely or partially within the State of Oregon: the Lower Columbia River (LCR) Coho ESU; the Oregon Coast (OC) Coho ESU; and the Southern Oregon/Northern California Coasts (SONCC) Coho ESU. This report summarizes results for coho populations in the portion of each ESU that is within the State of Oregon. In the Oregon portion of the LCR Coho ESU sufficient surveys were conducted to meet precision goals at the ESU level three out of the five sampling years. At the population complex scale, yearly precision goals were rarely met. Wild spawner abundance remained fairly stable over the five sampling years; hatchery abundance was more variable. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent at both the stratum and population scale. In the Oregon Coast ESU sufficient surveys were conducted to meet precision goals at the ESU level in all five sampling years, however at the population scale, precision goals were rarely met. Wild spawner abundance declined over the first four sampling years, but showed a significant increase in the fifth sampling year. The proportion of hatchery fish was generally low, but variable over the five sampling years. Only two populations, Salmon River and North Umpqua River, consistently had over 10% hatchery fish on the spawning grounds. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent. Inadequate funding and the need to update the GRTS sampling frame continue to hamper monitoring of the Oregon portion of the Southern Oregon/Northern California Coasts Coho ESU. In the Oregon portion of the ESU insufficient surveys were conducted to meet precision goals at the ESU level in any of the four years when GRTS surveys were done. However, estimates of wild coho spawners were obtained in all five years based on Huntley Park seining. Wild coho spawner abundance declined substantially over the five run years; but the proportion of hatchery coho spawning naturally was fairly low and stable. Regional patterns in fish distribution, spawn timing, and hatchery proportion are apparent. Close

• 312. [Article] Life History Variability, Habitat Use, and Migratory Behavior of Coastal Cutthroat Trout in the Salmon River, Oregon Report Number: OPSW-ODFW-2012-10

  Abstract -- Coast basins in Oregon support resident and anadromous cutthroat trout (Oncorhynchus clarki clarki). Cutthroat trout isolated above barriers are stream resident, but those with access to river, ...

  Citation × Citation Citation Abstract Copy Title: Life History Variability, Habitat Use, and Migratory Behavior of Coastal Cutthroat Trout in the Salmon River, Oregon Report Number: OPSW-ODFW-2012-10 Abstract -- Coast basins in Oregon support resident and anadromous cutthroat trout (Oncorhynchus clarki clarki). Cutthroat trout isolated above barriers are stream resident, but those with access to river, estuary, and marine environments may express a variety of life history and migratory patterns. Past studies (e.g. Giger 1972, Sumner 1972, Tipping 1981) indicated that estuaries serve primarily as a migratory corridor or short-term rearing environment. However, recent advances in marking and tracking technology have permitted researchers to gain a better understanding of the complex migratory and habitat use patterns of cutthroat. Krentz (2007) conducted studies in Salmon River on the central Oregon coast to explore migratory patterns of cutthroat and examine the role of the estuary as a rearing environment. Coastal cutthroat trout reared for extended periods of time throughout the available channel habitats in Salmon River estuary (Krentz 2007) during spring, summer, and fall. The estuarine resident population appeared to represent a significant portion of the migratory individuals, and included all older age classes. Estuary growth was similar to that of their ocean migrant counterparts, and survival in the estuary was high. Because cutthroat were collected and marked primarily within the estuary (Krentz 2007), it is unclear what portion of the migrant population reared in the estuary relative to the watershed or ocean, or whether the tagged group was representative of the migratory populations. The current study was designed to track a representative sample of the downstream migrant population, and assess the relative success (survival) of the estuary and ocean migrants. Similar studies in the Columbia River documented directed and rapid migration through the estuary (Zydlewski et al. 2008, Hering et al. 2009). With rare exception, cutthroat trout were not observed to rear in the estuary. In addition, many fish disappeared before reaching the ocean and few of the ocean migrants returned to the natal tributary. In this study we replicated the study design used in the Columbia River studies to further comparisons of estuary migration and rearing strategies between the two estuaries. The primary objective of our work in the Salmon River was to increase understanding of coastal cutthroat trout biology and the relationship between stream-resident and migratory, or “sea-run” cutthroat. Here we use the term “sea-run” to indicate migration into the tidally-inundated, or estuarine portions of the Salmon River watershed or to the ocean. Study objectives were to: 1.Estimate the distribution and abundance of coastal cutthroat trout in the Salmon River watershed 2.Quantify the proportions of the cutthroat populations that are migratory, identify which individuals migrate and describe the timing of migration 3.Describe estuary habitats used by sea-run migrants and characterize behavior within the Salmon River estuary 4.Estimate growth rate of stream and estuary resident cutthroat 5.Estimate estuary and ocean survival of sea-run individuals and document return to estuary and lower river. 6.Compare migratory behavior in Salmon River to that observed in the lower Columbia River Title: Life History Variability, Habitat Use, and Migratory Behavior of Coastal Cutthroat Trout in the Salmon River, Oregon Report Number: OPSW-ODFW-2012-10 Abstract -- Coast basins in Oregon support resident and anadromous cutthroat trout (Oncorhynchus clarki clarki). Cutthroat trout isolated above barriers are stream resident, but those with access to river, estuary, and marine environments may express a variety of life history and migratory patterns. Past studies (e.g. Giger 1972, Sumner 1972, Tipping 1981) indicated that estuaries serve primarily as a migratory corridor or short-term rearing environment. However, recent advances in marking and tracking technology have permitted researchers to gain a better understanding of the complex migratory and habitat use patterns of cutthroat. Krentz (2007) conducted studies in Salmon River on the central Oregon coast to explore migratory patterns of cutthroat and examine the role of the estuary as a rearing environment. Coastal cutthroat trout reared for extended periods of time throughout the available channel habitats in Salmon River estuary (Krentz 2007) during spring, summer, and fall. The estuarine resident population appeared to represent a significant portion of the migratory individuals, and included all older age classes. Estuary growth was similar to that of their ocean migrant counterparts, and survival in the estuary was high. Because cutthroat were collected and marked primarily within the estuary (Krentz 2007), it is unclear what portion of the migrant population reared in the estuary relative to the watershed or ocean, or whether the tagged group was representative of the migratory populations. The current study was designed to track a representative sample of the downstream migrant population, and assess the relative success (survival) of the estuary and ocean migrants. Similar studies in the Columbia River documented directed and rapid migration through the estuary (Zydlewski et al. 2008, Hering et al. 2009). With rare exception, cutthroat trout were not observed to rear in the estuary. In addition, many fish disappeared before reaching the ocean and few of the ocean migrants returned to the natal tributary. In this study we replicated the study design used in the Columbia River studies to further comparisons of estuary migration and rearing strategies between the two estuaries. The primary objective of our work in the Salmon River was to increase understanding of coastal cutthroat trout biology and the relationship between stream-resident and migratory, or “sea-run” cutthroat. Here we use the term “sea-run” to indicate migration into the tidally-inundated, or estuarine portions of the Salmon River watershed or to the ocean. Study objectives were to: 1.Estimate the distribution and abundance of coastal cutthroat trout in the Salmon River watershed 2.Quantify the proportions of the cutthroat populations that are migratory, identify which individuals migrate and describe the timing of migration 3.Describe estuary habitats used by sea-run migrants and characterize behavior within the Salmon River estuary 4.Estimate growth rate of stream and estuary resident cutthroat 5.Estimate estuary and ocean survival of sea-run individuals and document return to estuary and lower river. 6.Compare migratory behavior in Salmon River to that observed in the lower Columbia River Close

• 313. [Article] Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2002, F-163-R-07

  Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases ...

  Citation × Citation Citation Abstract Copy Title: Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2002, F-163-R-07 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Wild Fish Management Policy to reduce adverse impacts of hatchery programs on wild native stocks (ODFW 1992a). The main goal of the policy is to protect the genetic diversity of these stocks recognizing that genetic resources are a major component, not only in sustaining wild stocks, but also in perpetuating hatchery programs and the fisheries they support. In the past, hatchery programs and fish passage issues were the focus of spring chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River at Willamette Falls, and in the Middle Fork Willamette, McKenzie, North Santiam, South Santiam, Molalla, Clackamas, and Sandy rivers in 2002. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992b, ODFW 1992c, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2001 through early fall 2002. Title: Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2002, F-163-R-07 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Wild Fish Management Policy to reduce adverse impacts of hatchery programs on wild native stocks (ODFW 1992a). The main goal of the policy is to protect the genetic diversity of these stocks recognizing that genetic resources are a major component, not only in sustaining wild stocks, but also in perpetuating hatchery programs and the fisheries they support. In the past, hatchery programs and fish passage issues were the focus of spring chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River at Willamette Falls, and in the Middle Fork Willamette, McKenzie, North Santiam, South Santiam, Molalla, Clackamas, and Sandy rivers in 2002. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992b, ODFW 1992c, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2001 through early fall 2002. Close

• 314. [Article] Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2003, F-163-R-08

  Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases ...

  Citation × Citation Citation Abstract Copy Title: Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2003, F-163-R-08 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Native Fish Conservation Policy (ODFW 2003a) and the Hatchery Management Policy (ODFW 2003b) in part to reduce adverse impacts of hatchery programs on wild native stocks. The Native Fish Conservation Policy recognizes that naturally produced native fish are the foundation for long-term sustainability of native species and hatchery programs, and the fisheries they support. In the past, hatchery programs and fish passage issues were the focus of spring chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River at Willamette Falls, and in the Middle Fork Willamette, McKenzie, Calapooia, North Santiam, South Santiam, Molalla, Clackamas, and Sandy rivers in 2003. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992a, ODFW 1992b, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2002 through early fall 2003. Title: Spring Chinook Salmon in the Willamette and Sandy Rivers, Progress Reports 2003, F-163-R-08 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Native Fish Conservation Policy (ODFW 2003a) and the Hatchery Management Policy (ODFW 2003b) in part to reduce adverse impacts of hatchery programs on wild native stocks. The Native Fish Conservation Policy recognizes that naturally produced native fish are the foundation for long-term sustainability of native species and hatchery programs, and the fisheries they support. In the past, hatchery programs and fish passage issues were the focus of spring chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River at Willamette Falls, and in the Middle Fork Willamette, McKenzie, Calapooia, North Santiam, South Santiam, Molalla, Clackamas, and Sandy rivers in 2003. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992a, ODFW 1992b, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2002 through early fall 2003. Close

• 315. [Article] Spring Chinook in the Willamette and Sandy Basins, Progress Reports 2006-2007

  Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring Chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases ...

  Citation × Citation Citation Abstract Copy Title: Spring Chinook in the Willamette and Sandy Basins, Progress Reports 2006-2007 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring Chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Native Fish Conservation Policy (ODFW 2003a) and the Hatchery Management Policy (ODFW 2003b) in part to reduce adverse impacts of hatchery programs on wild native stocks. The Native Fish Conservation Policy recognizes that naturally produced native fish are the foundation for long-term sustainability of native species and hatchery programs, and the fisheries they support. Possible risks of artificial propagation programs have been well documented. Hazards include disease transfer, competition for food and spawning sites, increased predation, increased incidental mortality from harvest, loss of genetic variability, genetic drift, and domestication (Steward and Bjornn 1990; Hard et al. 1992; Cuenco et al. 1993; Busack and Currens 1995; NRC 1996; and Waples 1999). Hatcheries can also play a positive role for wild salmonids by bolstering populations, especially those on the verge of extirpation, by providing a genetic reserve as well as providing opportunities for nutrient enrichment of streams (Steward and Bjornn 1990; Cuenco et al. 1993). In the past, hatchery programs and fish passage issues were the focus of spring Chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River above Willamette Falls, and in the Middle Fork Willamette, McKenzie, North Santiam, South Santiam, Clackamas, and Sandy rivers in 2006 and 2007. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992a, ODFW 1992b, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2005 through early fall 2007. Title: Spring Chinook in the Willamette and Sandy Basins, Progress Reports 2006-2007 Abstract -- The Willamette and Sandy rivers support intense recreational fisheries for spring Chinook salmon (Oncorhynchus tshawytscha). Fisheries in these basins rely primarily on annual hatchery releases of 5–8 million juveniles. Hatchery programs exist in the McKenzie, Middle Fork Willamette, North and South Santiam, Clackamas, and Sandy rivers mainly as mitigation for dams that blocked natural production areas. Some natural spawning occurs in most of the major basins and a few smaller tributaries upstream of Willamette Falls. The Oregon Fish and Wildlife Commission adopted the Native Fish Conservation Policy (ODFW 2003a) and the Hatchery Management Policy (ODFW 2003b) in part to reduce adverse impacts of hatchery programs on wild native stocks. The Native Fish Conservation Policy recognizes that naturally produced native fish are the foundation for long-term sustainability of native species and hatchery programs, and the fisheries they support. Possible risks of artificial propagation programs have been well documented. Hazards include disease transfer, competition for food and spawning sites, increased predation, increased incidental mortality from harvest, loss of genetic variability, genetic drift, and domestication (Steward and Bjornn 1990; Hard et al. 1992; Cuenco et al. 1993; Busack and Currens 1995; NRC 1996; and Waples 1999). Hatcheries can also play a positive role for wild salmonids by bolstering populations, especially those on the verge of extirpation, by providing a genetic reserve as well as providing opportunities for nutrient enrichment of streams (Steward and Bjornn 1990; Cuenco et al. 1993). In the past, hatchery programs and fish passage issues were the focus of spring Chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study is being implemented to gather this information. A schematic of the study plan is shown in APPENDIX A. We conducted work in the main-stem Willamette River above Willamette Falls, and in the Middle Fork Willamette, McKenzie, North Santiam, South Santiam, Clackamas, and Sandy rivers in 2006 and 2007. Basin descriptions and background information on management and fish runs can be found in subbasin plans developed by the Oregon Department of Fish and Wildlife (ODFW 1988, ODFW 1992a, ODFW 1992b, and ODFW 1996). Task headings below cross reference the study plan outlined in APPENDIX A. This report covers tasks that were worked on in late 2005 through early fall 2007. Close

• 316. [Article] Comprehensive Plan for Production and Management of Oregon's Anadromous Salmon and Trout: Coastal Chinook Salmon Plan

  Abstract -- This is the fourth in a series of individual species plans concerning management of anadromous salmonid populations in the state of Oregon. This plan focuses on the actions the agency will ...

  Citation × Citation Citation Abstract Copy Title: Comprehensive Plan for Production and Management of Oregon's Anadromous Salmon and Trout: Coastal Chinook Salmon Plan Abstract -- This is the fourth in a series of individual species plans concerning management of anadromous salmonid populations in the state of Oregon. This plan focuses on the actions the agency will take regarding chinook salmon Oncorhynchus tshawytscha populations produced in Oregon Coastal watersheds from the Necanicum River in the north to the Winchuck River at the Oregon-California border. Management of chinook salmon in the Columbia River basin is shaped by a cooperative agreement with the state of Washington, the Columbia River Treaty Indian Tribes, and the Federal Government. This management plan for wild and hatchery coastal chinook salmon in coastal river basins is the product of an ongoing planning process. The process began with the preparation of a report that contains descriptions of the life histories and assessments of recent trends in the run strengths of chinook salmon stocks in Oregon coastal river basins (Nicholas and Hankin 1988). ODFW staff and public representatives developed a comprehensive list of issues of concern and actions needed to improve management of coastal chinook salmon. These actions were based in part on a review of historic and contemporary habitat, harvest, and enhancement management practices in Oregon and on a review of the fisheries scientific literature. Title: Comprehensive Plan for Production and Management of Oregon's Anadromous Salmon and Trout: Coastal Chinook Salmon Plan Abstract -- This is the fourth in a series of individual species plans concerning management of anadromous salmonid populations in the state of Oregon. This plan focuses on the actions the agency will take regarding chinook salmon Oncorhynchus tshawytscha populations produced in Oregon Coastal watersheds from the Necanicum River in the north to the Winchuck River at the Oregon-California border. Management of chinook salmon in the Columbia River basin is shaped by a cooperative agreement with the state of Washington, the Columbia River Treaty Indian Tribes, and the Federal Government. This management plan for wild and hatchery coastal chinook salmon in coastal river basins is the product of an ongoing planning process. The process began with the preparation of a report that contains descriptions of the life histories and assessments of recent trends in the run strengths of chinook salmon stocks in Oregon coastal river basins (Nicholas and Hankin 1988). ODFW staff and public representatives developed a comprehensive list of issues of concern and actions needed to improve management of coastal chinook salmon. These actions were based in part on a review of historic and contemporary habitat, harvest, and enhancement management practices in Oregon and on a review of the fisheries scientific literature. Close

• 317. [Article] A Trout Management Program for the Main Stem Lower Deschutes River 1978

  Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important ...

  Citation × Citation Citation Abstract Copy Title: A Trout Management Program for the Main Stem Lower Deschutes River 1978 Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important species to the local recreational fishery, although significant numbers of spring, summer, and fall chinook are also taken from the river. The salmon contribute significantly to fisheries in the Pacific Ocean and Columbia River and steelhead enter fisheries in the Columbia. The Deschutes also supports a good population of whitefish, lesser numbers of other trout species, small runs of coho and sockeye salmon, and several species of nongame fish. Title: A Trout Management Program for the Main Stem Lower Deschutes River 1978 Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important species to the local recreational fishery, although significant numbers of spring, summer, and fall chinook are also taken from the river. The salmon contribute significantly to fisheries in the Pacific Ocean and Columbia River and steelhead enter fisheries in the Columbia. The Deschutes also supports a good population of whitefish, lesser numbers of other trout species, small runs of coho and sockeye salmon, and several species of nongame fish. Close

• 318. [Article] Fish Management Plan Detroit Reservoir 1982

  Abstract -- Detroit Reservoir is a 3,580 acre Corps of Engineers multipurpose reservoir located at river mile 48.5 on the North Santiam River. The dam is located just below the confluence of the North ...

  Citation × Citation Citation Abstract Copy Title: Fish Management Plan Detroit Reservoir 1982 Abstract -- Detroit Reservoir is a 3,580 acre Corps of Engineers multipurpose reservoir located at river mile 48.5 on the North Santiam River. The dam is located just below the confluence of the North Santiam and Breitenbush rivers. The reservoir was impounded in 1953 and is 9 miles long and over 1 mile at its widest point. Surface elevation is 1,569 ft at full pool. The reservoir is located about 50 miles east of Salem and road access is via State Highway 22. A large overnight campground and a day use area, both with boat launching facilities, are maintained by the Parks and Recreation Division of the Oregon Department of Transportation. The U.S. Forest Service (USFS) maintains two campgrounds on the south side of the reservoir, and there are two commercial boat concessions near the town of Detroit. Most of the area surrounding the lake is USFS land, although there are some private homesites on the North Santiam arm near Detroit. The reservoir receives heavy recreational use during the spring and summer months, including fishing, swimming, boating, camping, and water skiing. Fish passage structures were not incorporated in either Detroit or Big Cliff (reregulating dam) dams and consequently some 82 miles of stream are no longer available to former runs of spring chinook salmon and winter steelhead. In July 1982, the Oregon Fish and Wildlife Commission accepted the Department's recommendation to manage Detroit Reservoir for hatchery fish. Title: Fish Management Plan Detroit Reservoir 1982 Abstract -- Detroit Reservoir is a 3,580 acre Corps of Engineers multipurpose reservoir located at river mile 48.5 on the North Santiam River. The dam is located just below the confluence of the North Santiam and Breitenbush rivers. The reservoir was impounded in 1953 and is 9 miles long and over 1 mile at its widest point. Surface elevation is 1,569 ft at full pool. The reservoir is located about 50 miles east of Salem and road access is via State Highway 22. A large overnight campground and a day use area, both with boat launching facilities, are maintained by the Parks and Recreation Division of the Oregon Department of Transportation. The U.S. Forest Service (USFS) maintains two campgrounds on the south side of the reservoir, and there are two commercial boat concessions near the town of Detroit. Most of the area surrounding the lake is USFS land, although there are some private homesites on the North Santiam arm near Detroit. The reservoir receives heavy recreational use during the spring and summer months, including fishing, swimming, boating, camping, and water skiing. Fish passage structures were not incorporated in either Detroit or Big Cliff (reregulating dam) dams and consequently some 82 miles of stream are no longer available to former runs of spring chinook salmon and winter steelhead. In July 1982, the Oregon Fish and Wildlife Commission accepted the Department's recommendation to manage Detroit Reservoir for hatchery fish. Close

• 319. [Article] Part IV. Anadromous Fish Production Plans

  Abstract -- Early-returning coho salmon in the Sandy Subbasin are produced at the Sandy Hatchery and managed as a hatchery stock. They also produce naturally in numerous tributaries and the upper mainstern. ...

  Citation × Citation Citation Abstract Copy Title: Part IV. Anadromous Fish Production Plans Abstract -- Early-returning coho salmon in the Sandy Subbasin are produced at the Sandy Hatchery and managed as a hatchery stock. They also produce naturally in numerous tributaries and the upper mainstern. Numbers for early-run coho that return to spawn naturally are represented best by Marmot Darn counts. Although some spawning habitat for coho exists below Marmot Darn, the optimum tributaries are above the darn in upper tributaries and side channels of the mainstem. Construction of Marmot Dam and the Bull Run Reservoir system has reduced the available habitat historically used by coho salmon. Although Marmot Darn is laddered, flows for many years after construction were not adequate to attract or allow passage above the dam. Minimum flow agreements now maintain flows adequate for fish passage and attraction. The Bull Run River remains blocked for anadrornous fish passage above the dam for Reservoir 2; the city of Portland mitigates for the loss of habitat by funding the release of juvenile fish elsewhere in the subbasin. Title: Part IV. Anadromous Fish Production Plans Abstract -- Early-returning coho salmon in the Sandy Subbasin are produced at the Sandy Hatchery and managed as a hatchery stock. They also produce naturally in numerous tributaries and the upper mainstern. Numbers for early-run coho that return to spawn naturally are represented best by Marmot Darn counts. Although some spawning habitat for coho exists below Marmot Darn, the optimum tributaries are above the darn in upper tributaries and side channels of the mainstem. Construction of Marmot Dam and the Bull Run Reservoir system has reduced the available habitat historically used by coho salmon. Although Marmot Darn is laddered, flows for many years after construction were not adequate to attract or allow passage above the dam. Minimum flow agreements now maintain flows adequate for fish passage and attraction. The Bull Run River remains blocked for anadrornous fish passage above the dam for Reservoir 2; the city of Portland mitigates for the loss of habitat by funding the release of juvenile fish elsewhere in the subbasin. Close

• 320. [Article] Sandy River Basin Fish Management Plan 1997 Draft

  Abstract -- The Sandy River and its tributaries originate high on the west and south slopes of Mount Hood, flow approximately 55 miles in a northwesterly direction and enter the Columbia River near Troutdale ...

  Citation × Citation Citation Abstract Copy Title: Sandy River Basin Fish Management Plan 1997 Draft Abstract -- The Sandy River and its tributaries originate high on the west and south slopes of Mount Hood, flow approximately 55 miles in a northwesterly direction and enter the Columbia River near Troutdale (Columbia RM 120.5). The Sandy basin is situated in Multnomah and Clackamas counties (EPA reach 17080001), and drains approximately 508 square miles. The Sandy River basin is comprised of several subbasins, many of which are uniquely distinct hydrologically and geomorphologically. Principle tributaries include the Zigzag River, Still Creek, and the Salmon River in the upper basin and the Bull Run River, Gordon, Cedar, and Beaver creeks in the lower basin. Many other smaller tributaries located throughout the basin contribute significantly to stream flows and provide habitat for a wide array of fish and wildlife assemblages. The Sandy River is well known for its sport fishing. Winter steelhead, summer steelhead, and spring chinook are the most sought after species. Both winter and summer steelhead, coho, and spring chinook are supplemented with hatchery produced fish. Rainbow trout and fall chinook are no longer stocked in flowing waters of the Sandy River basin. In the late 1980's the Northwest Power Planning Council administered a planning process to create a management plan for the Columbia River basin. As a part of that process, a subbasin plan concerning management of steelhead and salmon was written for the Sandy River basin. This document, the draft "Sandy River Basin Fish Management Plan", significantly expands on the Northwest Power Planning Council document by adding resident fish species and new information on anadromous species and will ultimately produce the final plan used to guide fish resource management in the basin for the next 5 to 10 years. Title: Sandy River Basin Fish Management Plan 1997 Draft Abstract -- The Sandy River and its tributaries originate high on the west and south slopes of Mount Hood, flow approximately 55 miles in a northwesterly direction and enter the Columbia River near Troutdale (Columbia RM 120.5). The Sandy basin is situated in Multnomah and Clackamas counties (EPA reach 17080001), and drains approximately 508 square miles. The Sandy River basin is comprised of several subbasins, many of which are uniquely distinct hydrologically and geomorphologically. Principle tributaries include the Zigzag River, Still Creek, and the Salmon River in the upper basin and the Bull Run River, Gordon, Cedar, and Beaver creeks in the lower basin. Many other smaller tributaries located throughout the basin contribute significantly to stream flows and provide habitat for a wide array of fish and wildlife assemblages. The Sandy River is well known for its sport fishing. Winter steelhead, summer steelhead, and spring chinook are the most sought after species. Both winter and summer steelhead, coho, and spring chinook are supplemented with hatchery produced fish. Rainbow trout and fall chinook are no longer stocked in flowing waters of the Sandy River basin. In the late 1980's the Northwest Power Planning Council administered a planning process to create a management plan for the Columbia River basin. As a part of that process, a subbasin plan concerning management of steelhead and salmon was written for the Sandy River basin. This document, the draft "Sandy River Basin Fish Management Plan", significantly expands on the Northwest Power Planning Council document by adding resident fish species and new information on anadromous species and will ultimately produce the final plan used to guide fish resource management in the basin for the next 5 to 10 years. Close