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• 171. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2009

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2009 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. Two rotary screw traps were located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day River and the South Fork trap located at rkm 10 of the South Fork John Day River. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The third rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2009 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. Two rotary screw traps were located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day River and the South Fork trap located at rkm 10 of the South Fork John Day River. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The third rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 172. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2010

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2010 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. Two rotary screw traps were located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day River and the South Fork trap located at rkm 10 of the South Fork John Day River. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The third rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2010 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at three rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. Two rotary screw traps were located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day River and the South Fork trap located at rkm 10 of the South Fork John Day River. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The third rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 173. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2011

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2011 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2011 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 174. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2012

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2012 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2012 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 175. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2013

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2013 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2013 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 176. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2014

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2014 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2014 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 177. [Article] Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2015

  Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), ...

  Citation × Citation Citation Abstract Copy Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2015 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Title: Chinook Salmon Productivity and Escapement Monitoring in the John Day River Basin - Annual Technical Report 2015 Abstract -- Juvenile spring Chinook and steelhead migrants were captured at two rotary screw trap sites and while seining in the Mainstem John Day River to estimate abundance, smolt-to-adult survival (SAR), and to study the life history characteristics of steelhead in the John Day River subbasin. One rotary screw trap was located in the Upper Mainstem fourth-level HUC. The Mainstem trap at rkm 326 of the Mainstem John Day. The Mainstem trap is located downstream of the confluence of the Mainstem John Day River with the South Fork John Day River. The second rotary screw trap was located on the Middle Fork John Day River at rkm 24 and is hereafter referred to as the Middle Fork trap. Spawning ground surveys for spring (stream-type) Chinook salmon were conducted in four main spawning areas (Mainstem, Middle Fork, North Fork, and Granite Creek System) and six minor spawning areas (South Fork, Camas Creek, Desolation Creek, Trail Creek, Deardorff Creek and Clear Creek) in the John Day River basin. Originator: ODFW, Eastern Oregon Fish Research (EOFR). Funded by Oregon Watershed Enhancement Board (OWEB) Close

• 178. [Article] Willamette Biological Opinion Hatchery Research 2008 Interim Activities Report

  Abstract -- Possible risks of artificial propagation programs have been well documented. Hazards include disease transfer, competition for food and spawning sites, increased predation, increased incidental ...

  Citation × Citation Citation Abstract Copy Title: Willamette Biological Opinion Hatchery Research 2008 Interim Activities Report Abstract -- 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; 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). The objective of this project is to evaluate the potential effects of hatchery programs on naturally spawning populations of spring Chinook within the Upper Willamette River ESU. ODFW submits this report in fulfillment of Task Order NWPOD-08-FH-05 (per Task 3). This report covers activities of July 2008–May 2009 that were implemented by ODFW on behalf of the Corps to assist with meeting the requirements of the reasonable and prudent alternatives and measures prescribed in the Willamette Project Biological Opinion (BiOp) of July 2008 (NOAA 2008). Although a strategy to implement actions identified on the BiOp has not yet been completed, the Corps provided interim funding to continue certain monitoring activities and initiate long-term planning as detailed below: Task 1 (a–f). Monitor straying of hatchery fish on natural spawning grounds in the North Santiam, South Santiam, McKenzie, and Middle Fork Willamette rivers to determine the distribution, abundance and proportion of hatchery and natural-origin fish spawning by: (1) conducting spawning ground surveys downstream of projects and upstream of Detroit and Foster reservoirs; (2) conducting re-surveys to assess variability in redd counts among crews; (3) estimating pre-spawning mortality; (4) estimating the percentage of hatchery-origin spawners using otolith analysis; (5) monitoring fin-clipped and unclipped fish passing Leaburg and upper Bennett dams. Task 2 (a–c). Monitor fin-clipped and unclipped fish entering hatcheries and collection facilities (i.e., record number, origin, length, date of return); determine origin using otolith analysis; collect tissue samples for genetic analysis. Task 4. Work with Corps and/or contractors to develop coordinated monitoring plan for Corps-funded hatchery programs based on requirements in the 2008 BiOp. Title: Willamette Biological Opinion Hatchery Research 2008 Interim Activities Report Abstract -- 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; 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). The objective of this project is to evaluate the potential effects of hatchery programs on naturally spawning populations of spring Chinook within the Upper Willamette River ESU. ODFW submits this report in fulfillment of Task Order NWPOD-08-FH-05 (per Task 3). This report covers activities of July 2008–May 2009 that were implemented by ODFW on behalf of the Corps to assist with meeting the requirements of the reasonable and prudent alternatives and measures prescribed in the Willamette Project Biological Opinion (BiOp) of July 2008 (NOAA 2008). Although a strategy to implement actions identified on the BiOp has not yet been completed, the Corps provided interim funding to continue certain monitoring activities and initiate long-term planning as detailed below: Task 1 (a–f). Monitor straying of hatchery fish on natural spawning grounds in the North Santiam, South Santiam, McKenzie, and Middle Fork Willamette rivers to determine the distribution, abundance and proportion of hatchery and natural-origin fish spawning by: (1) conducting spawning ground surveys downstream of projects and upstream of Detroit and Foster reservoirs; (2) conducting re-surveys to assess variability in redd counts among crews; (3) estimating pre-spawning mortality; (4) estimating the percentage of hatchery-origin spawners using otolith analysis; (5) monitoring fin-clipped and unclipped fish passing Leaburg and upper Bennett dams. Task 2 (a–c). Monitor fin-clipped and unclipped fish entering hatcheries and collection facilities (i.e., record number, origin, length, date of return); determine origin using otolith analysis; collect tissue samples for genetic analysis. Task 4. Work with Corps and/or contractors to develop coordinated monitoring plan for Corps-funded hatchery programs based on requirements in the 2008 BiOp. Close

• 179. [Article] Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2011 Report Number: OPSW-ODFW-2012-1

  Abstract -- This report provides a summary of results from juvenile coho and steelhead surveys conducted on the Oregon coast and lower Columbia River in 2011 and an analysis of these results relative to ...

  Citation × Citation Citation Abstract Copy Title: Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2011 Report Number: OPSW-ODFW-2012-1 Abstract -- This report provides a summary of results from juvenile coho and steelhead surveys conducted on the Oregon coast and lower Columbia River in 2011 and an analysis of these results relative to previous years. Distribution measures are given specific to species and include site occupancy (the percent of sites with fish present) and pool occupancy (average percent of pools with fish) for the Monitoring Area (MA), Evolutionarily Significant Unit (ESU) or Distinct Population Segment (DPS). Abundance measures are also specific to species and include the average density of fish in pools for each MA, ESU and DPS and population estimates in pools extrapolated to MA, ESU and DPS scale. Prior reports can be found at http://nrimp.dfw.state.or.us/crl/default.aspx?pn=WORP. Oregon Coast Coho (OCC) ESU density and pool population estimates for 2011 were higher than in 1998-2000, but similar to 2001-2010. Coho site occupancies in 2011 were the highest since sampling began in 1998. We observed a small, but positive trend in the site occupancy and pool population estimates for coho across the ESU from 1998 to 2011. Density and occupancy metrics were higher in each MA than the average condition from 1998 – 2010. Southern Oregon Northern California Coho (SONCC) ESU density estimates in 2011 were similar to 2009-2010, but lower than the estimate for 2008. Pool population estimates were similar to the average from 1998-2010, but lower than in 2008. Pool occupancy was similar to the average from 1998-2010. Site occupancy in 2011 was slightly below the average from 1998-2010. No increasing or decreasing trends were detected for the ESU. Lower Columbia River (LCR) coho density, pool population, and pool occupancy estimates for 2011 were similar to previous years. Site occupancy in 2011 was slightly below the average site occupancy from 2006 – 2010. No increasing or decreasing trends were detected for the ESU. Coho density estimates were higher in the OCC than the SONCC and the LCR, which were similar. Occupancy metrics were highest in the OCC, intermediate in the SONCC, and lowest in the LCR. Juvenile steelhead density, pool population and pool occupancy estimates from 2011 were comparable to previous years in all DPSs. Site occupancies for the Oregon Coast DPS in 2011 were the highest since sampling began. Steelhead were more abundant and widespread in the Klamath Mountains Province than the Oregon Coast, Southwest WA or Lower Columbia River DPSs, which had similar density metrics. Steelhead in the Oregon Coast DPS were more widespread then in either Columbia River DPSs. In accordance with the findings of the Smith River Verification Study (Constable and Suring in prep.) we lowered our pool depth criteria to include pools that are =20 cm in maximum depth. This change was made in survey year 2010 and continued in 2011. Data which included these smaller pools was analyzed separately to facilitate the comparison of density and occupancy metrics to previous years. Analyses which included smaller pools produced higher site occupancies for coho in the Mid Coast and Umpqua and for steelhead in the Mid Coast, Mid South Coast, Umpqua MAs and the Klamath Mountains and Southwest Washington DPSs. Pool population estimates also increased with the addition of the smaller pools. Title: Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2011 Report Number: OPSW-ODFW-2012-1 Abstract -- This report provides a summary of results from juvenile coho and steelhead surveys conducted on the Oregon coast and lower Columbia River in 2011 and an analysis of these results relative to previous years. Distribution measures are given specific to species and include site occupancy (the percent of sites with fish present) and pool occupancy (average percent of pools with fish) for the Monitoring Area (MA), Evolutionarily Significant Unit (ESU) or Distinct Population Segment (DPS). Abundance measures are also specific to species and include the average density of fish in pools for each MA, ESU and DPS and population estimates in pools extrapolated to MA, ESU and DPS scale. Prior reports can be found at http://nrimp.dfw.state.or.us/crl/default.aspx?pn=WORP. Oregon Coast Coho (OCC) ESU density and pool population estimates for 2011 were higher than in 1998-2000, but similar to 2001-2010. Coho site occupancies in 2011 were the highest since sampling began in 1998. We observed a small, but positive trend in the site occupancy and pool population estimates for coho across the ESU from 1998 to 2011. Density and occupancy metrics were higher in each MA than the average condition from 1998 – 2010. Southern Oregon Northern California Coho (SONCC) ESU density estimates in 2011 were similar to 2009-2010, but lower than the estimate for 2008. Pool population estimates were similar to the average from 1998-2010, but lower than in 2008. Pool occupancy was similar to the average from 1998-2010. Site occupancy in 2011 was slightly below the average from 1998-2010. No increasing or decreasing trends were detected for the ESU. Lower Columbia River (LCR) coho density, pool population, and pool occupancy estimates for 2011 were similar to previous years. Site occupancy in 2011 was slightly below the average site occupancy from 2006 – 2010. No increasing or decreasing trends were detected for the ESU. Coho density estimates were higher in the OCC than the SONCC and the LCR, which were similar. Occupancy metrics were highest in the OCC, intermediate in the SONCC, and lowest in the LCR. Juvenile steelhead density, pool population and pool occupancy estimates from 2011 were comparable to previous years in all DPSs. Site occupancies for the Oregon Coast DPS in 2011 were the highest since sampling began. Steelhead were more abundant and widespread in the Klamath Mountains Province than the Oregon Coast, Southwest WA or Lower Columbia River DPSs, which had similar density metrics. Steelhead in the Oregon Coast DPS were more widespread then in either Columbia River DPSs. In accordance with the findings of the Smith River Verification Study (Constable and Suring in prep.) we lowered our pool depth criteria to include pools that are =20 cm in maximum depth. This change was made in survey year 2010 and continued in 2011. Data which included these smaller pools was analyzed separately to facilitate the comparison of density and occupancy metrics to previous years. Analyses which included smaller pools produced higher site occupancies for coho in the Mid Coast and Umpqua and for steelhead in the Mid Coast, Mid South Coast, Umpqua MAs and the Klamath Mountains and Southwest Washington DPSs. Pool population estimates also increased with the addition of the smaller pools. Close

• 180. [Article] Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2016 Report Number: OPSW-ODFW-2017-1

  Abstract -- This report analyzes monitoring data for juvenile Coho Salmon in three Evolutionarily Significant Units (ESUs) and juvenile steelhead in four Distinct Population Segments (DPSs) in western ...

  Citation × Citation Citation Abstract Copy Title: Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2016 Report Number: OPSW-ODFW-2017-1 Abstract -- This report analyzes monitoring data for juvenile Coho Salmon in three Evolutionarily Significant Units (ESUs) and juvenile steelhead in four Distinct Population Segments (DPSs) in western Oregon. Monitoring data are used to evaluate trends in salmonid distribution and abundance, which inform conservation and recovery decisions. The analysis in this report spans the years 1998-2016. Previous annual reports can be found at: https://nrimp.dfw.state.or.us/crl/default.aspx?pn=WORP. Juvenile Coho Salmon: For both the Oregon Coast Coho (OCC) and Lower Columbia River (LCR) ESUs, abundance estimates were lower in 2016 relative to the average from the 2013-2015 broods. The 2016 LCR abundance estimate was the lowest recorded in the 11 years of monitoring in this ESU. In the Southern Oregon Northern California Coho (SONCC) ESU the 2016 abundance estimate was similar to the average of the estimates for the 2013- 2015 broods. The 2016 estimate of site occupancy, relative to the estimate for the 2013- 2015 broods, was lower in the LCR, and similar in the OCC and the SONCC. As with the abundance estimate for the LCR, the 2016 estimate of site occupancy was the lowest recorded since monitoring began in the ESU. In the OCC there is some indication from Coho Salmon survey data that freshwater productivity rates are regulated by compensatory density dependence at one or several early life stages. In the OCC metapopulation, the spawner:summer parr (recruit) curve is sigmoidal in years of higher female spawner abundance, suggesting some factor (or combination of factors) that sets juvenile carrying capacity. A density dependent pattern has not been observed in the LCR, likely due to relatively low seeding levels in the ESU. For the SONCC there are insufficient adult data to perform these analyses. Juvenile Steelhead: For the Oregon Coast (OC) and the Klamath Mountains Provence (KMP) DPSs, the average of the abundance estimates for the 2014-2016 broods was similar to the average for the 2010-2013 broods. The 2016 abundance estimate was similar to the average of the 2006-2015 estimates in the South West Washington (SWW) DPS and lower than the average of the 2006-2015 estimates in the Lower Columbia River (LCR) DPS. Site occupancy estimates in the OC and KMP in the 2014-2016 broods were similar to the estimates for the 2010-2013 broods. Site occupancy estimates in 2016, relative to the average of the 2006-2015 estimates, were similar in the SWW and lower in the LCR. From 1998 to 2009 pools were required to be =40cm in maximum depth to meet survey protocols. This was changed to =20cm in maximum depth in 2010. Analyses based on the =20cm maximum depth criteria, relative to the =40cm maximum depth criteria, typically produce increases in site occupancy rates and larger abundance estimates with proportionately smaller confidence intervals. Abundance estimate trends that included shallow pools tracked with those based on the former pool criteria. Title: Juvenile Salmonid Monitoring In Coastal Oregon and Lower Columbia Streams, 2016 Report Number: OPSW-ODFW-2017-1 Abstract -- This report analyzes monitoring data for juvenile Coho Salmon in three Evolutionarily Significant Units (ESUs) and juvenile steelhead in four Distinct Population Segments (DPSs) in western Oregon. Monitoring data are used to evaluate trends in salmonid distribution and abundance, which inform conservation and recovery decisions. The analysis in this report spans the years 1998-2016. Previous annual reports can be found at: https://nrimp.dfw.state.or.us/crl/default.aspx?pn=WORP. Juvenile Coho Salmon: For both the Oregon Coast Coho (OCC) and Lower Columbia River (LCR) ESUs, abundance estimates were lower in 2016 relative to the average from the 2013-2015 broods. The 2016 LCR abundance estimate was the lowest recorded in the 11 years of monitoring in this ESU. In the Southern Oregon Northern California Coho (SONCC) ESU the 2016 abundance estimate was similar to the average of the estimates for the 2013- 2015 broods. The 2016 estimate of site occupancy, relative to the estimate for the 2013- 2015 broods, was lower in the LCR, and similar in the OCC and the SONCC. As with the abundance estimate for the LCR, the 2016 estimate of site occupancy was the lowest recorded since monitoring began in the ESU. In the OCC there is some indication from Coho Salmon survey data that freshwater productivity rates are regulated by compensatory density dependence at one or several early life stages. In the OCC metapopulation, the spawner:summer parr (recruit) curve is sigmoidal in years of higher female spawner abundance, suggesting some factor (or combination of factors) that sets juvenile carrying capacity. A density dependent pattern has not been observed in the LCR, likely due to relatively low seeding levels in the ESU. For the SONCC there are insufficient adult data to perform these analyses. Juvenile Steelhead: For the Oregon Coast (OC) and the Klamath Mountains Provence (KMP) DPSs, the average of the abundance estimates for the 2014-2016 broods was similar to the average for the 2010-2013 broods. The 2016 abundance estimate was similar to the average of the 2006-2015 estimates in the South West Washington (SWW) DPS and lower than the average of the 2006-2015 estimates in the Lower Columbia River (LCR) DPS. Site occupancy estimates in the OC and KMP in the 2014-2016 broods were similar to the estimates for the 2010-2013 broods. Site occupancy estimates in 2016, relative to the average of the 2006-2015 estimates, were similar in the SWW and lower in the LCR. From 1998 to 2009 pools were required to be =40cm in maximum depth to meet survey protocols. This was changed to =20cm in maximum depth in 2010. Analyses based on the =20cm maximum depth criteria, relative to the =40cm maximum depth criteria, typically produce increases in site occupancy rates and larger abundance estimates with proportionately smaller confidence intervals. Abundance estimate trends that included shallow pools tracked with those based on the former pool criteria. Close