Search

Search Results

• 21. [Article] Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1997

  Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during ...

  Citation × Citation Citation Abstract Copy Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1997 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1997 migratory year (MY 1997) from 1 September 1996 through 31 August 1997. We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1997 migratory year (MY 1997) from 1 September 1996 through 31 August 1997. ODFW, Eastern Oregon Fish Research (EOFR) Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1997 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1997 migratory year (MY 1997) from 1 September 1996 through 31 August 1997. We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1997 migratory year (MY 1997) from 1 September 1996 through 31 August 1997. ODFW, Eastern Oregon Fish Research (EOFR) Close

• 22. [Article] Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1998

  Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during ...

  Citation × Citation Citation Abstract Copy Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1998 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1998 migratory year (MY 1998) from 1 Septermber 1997 through 31 August 1998. We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1998 migratory year (MY 1998) from 1 Septermber 1997 through 31 August 1998. ODFW, Eastern Oregon Fish Research (EOFR) Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1998 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1998 migratory year (MY 1998) from 1 Septermber 1997 through 31 August 1998. We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1998 migratory year (MY 1998) from 1 Septermber 1997 through 31 August 1998. ODFW, Eastern Oregon Fish Research (EOFR) Close

• 23. [Article] Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1999

  Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during ...

  Citation × Citation Citation Abstract Copy Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1999 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1999 migratory year (MY 1999) from 1 September 1998 through 31 August 1999.We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1999 migratory year (MY 1999) from 1 September 1998 through 31 August 1999. ODFW, Eastern Oregon Fish Research (EOFR) Title: Fish Research Project Oregon; Investigations Into The Early Life History Of Naturally Produced Spring Chinook Salmon In The Grande Ronde River Basin - Annual Progress Report 1999 Abstract -- Project determined migration timing and abundance of juvenile spring Chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1999 migratory year (MY 1999) from 1 September 1998 through 31 August 1999.We determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha using rotary screw traps on four streams in the Grande Ronde River basin during the 1999 migratory year (MY 1999) from 1 September 1998 through 31 August 1999. ODFW, Eastern Oregon Fish Research (EOFR) Close

• 24. [Article] Upper Grande Ronde River Spring Chinook Salmon Hatchery Program Review

  Abstract -- This paper provides background information, program development history, and an assessment of program performance for the Upper Grande Ronde River spring Chinook salmon Oncorhynchus tshawytscha ...

  Citation × Citation Citation Abstract Copy Title: Upper Grande Ronde River Spring Chinook Salmon Hatchery Program Review Abstract -- This paper provides background information, program development history, and an assessment of program performance for the Upper Grande Ronde River spring Chinook salmon Oncorhynchus tshawytscha hatchery program. We cover the time period from the initiation of the program in the mid-1990s to present. General background information and discussion of the now endemic hatchery programs were previously presented in Grande Ronde Basin Spring Chinook Salmon Hatchery Review: Introduction and the Early Years. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Upper Grande Ronde River Spring Chinook Salmon Hatchery Program Review Abstract -- This paper provides background information, program development history, and an assessment of program performance for the Upper Grande Ronde River spring Chinook salmon Oncorhynchus tshawytscha hatchery program. We cover the time period from the initiation of the program in the mid-1990s to present. General background information and discussion of the now endemic hatchery programs were previously presented in Grande Ronde Basin Spring Chinook Salmon Hatchery Review: Introduction and the Early Years. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 25. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2015 Annual Progress Report

  Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized ...

  Citation × Citation Citation Abstract Copy Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2015 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2015 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 26. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report

  Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized ...

  Citation × Citation Citation Abstract Copy Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 27. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2004 Annual Progress Report

  Abstract -- This report summarizes spring Chinook salmon monitoring data for the Lower Snake River Compensation Plan (LSRCP) facilities in 2004. Also summarized are adult broodstock monitoring data collected ...

  Citation × Citation Citation Abstract Copy Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2004 Annual Progress Report Abstract -- This report summarizes spring Chinook salmon monitoring data for the Lower Snake River Compensation Plan (LSRCP) facilities in 2004. Also summarized are adult broodstock monitoring data collected in the Grande Ronde Basin by the Nez Perce Tribe (NPT) and the Confederated Tribes of the Umatilla Indian Reservation (CTUIR). The main objectives of this report are to document and evaluate spring Chinook salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins. These data are used to design culture practices to optimize egg-to-smolt survival rate, smolt quality, and smolt-to-adult survival rate, as well as to provide information to adapt the programs to most effectively meet management objectives. This report provides information on rearing and release operations for the 2002 brood year of juvenile Chinook salmon smolts, the collection, spawning, and adult characteristics for the 2004 return of adult Chinook salmon, and the collection of eggs for the 2004 brood year. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2004 Annual Progress Report Abstract -- This report summarizes spring Chinook salmon monitoring data for the Lower Snake River Compensation Plan (LSRCP) facilities in 2004. Also summarized are adult broodstock monitoring data collected in the Grande Ronde Basin by the Nez Perce Tribe (NPT) and the Confederated Tribes of the Umatilla Indian Reservation (CTUIR). The main objectives of this report are to document and evaluate spring Chinook salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins. These data are used to design culture practices to optimize egg-to-smolt survival rate, smolt quality, and smolt-to-adult survival rate, as well as to provide information to adapt the programs to most effectively meet management objectives. This report provides information on rearing and release operations for the 2002 brood year of juvenile Chinook salmon smolts, the collection, spawning, and adult characteristics for the 2004 return of adult Chinook salmon, and the collection of eggs for the 2004 brood year. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 28. [Article] Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2008-09 Run Year

  Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult ...

  Citation × Citation Citation Abstract Copy Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2008-09 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa hatchery stock steelhead, primarily into the Deschutes River (midColumbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock which increased smolt-to-adult survival, and a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. These fish provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2008-09 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa hatchery stock steelhead, primarily into the Deschutes River (midColumbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock which increased smolt-to-adult survival, and a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. These fish provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 29. [Article] Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2009-10 Run Year

  Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult ...

  Citation × Citation Citation Abstract Copy Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2009-10 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa hatchery stock steelhead, primarily into the Deschutes River (mid-Columbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock, which is expected to increase smolt-to-adult survival, and due to a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. Released smolts provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Bag limits for hatchery steelhead were increased to five fish in the 2009-10 run year because of a strong anticipated return of hatchery origin adults. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2009-10 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa hatchery stock steelhead, primarily into the Deschutes River (mid-Columbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock, which is expected to increase smolt-to-adult survival, and due to a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. Released smolts provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Bag limits for hatchery steelhead were increased to five fish in the 2009-10 run year because of a strong anticipated return of hatchery origin adults. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 30. [Article] Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2010-11 Run Year

  Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult ...

  Citation × Citation Citation Abstract Copy Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2010-11 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa Hatchery stock steelhead, primarily into the Deschutes River (mid-Columbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock, which is expected to increase smolt-to-adult survival, and due to a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. Released smolts provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Summer Steelhead Creel Surveys on the Grande Ronde, Wallowa, and Imnaha Rivers for the 2010-11 Run Year Abstract -- Summer steelhead (Oncorhynchus mykiss) fisheries in the Grande Ronde and Imnaha river basins were closed in 1974. This closure was prompted by declining adult returns, as indicated by adult counts at Ice Harbor Dam on the Snake River (USACOE 1996), and low steelhead redd counts on index streams in the Grande Ronde and Imnaha river basins (Oregon Department of Fish and Wildlife District Annual Reports 1949-1974). The Lower Snake River Compensation Plan (LSRCP), initiated by Congress in 1976, was developed to compensate for losses of anadromous salmonids in the Snake River basin from construction of the four lower Snake River dams built between 1962 and 1976. Thus, the focus of the LSRCP is the Snake River above Lower Granite Dam (Rkm 173), the uppermost of these four dams. One of the primary objectives of the LSRCP in Oregon is to restore historic recreational and tribal fisheries for summer steelhead in the Grande Ronde and Imnaha river basins (Carmichael 1989). Approximately 1.68 million steelhead smolts were targeted for release in Oregon each year during April and May in the Grande Ronde and Imnaha river basins between 1984 and 1999. In 2000, we reduced releases to approximately 1.2 million smolts in response to the National Marine Fisheries Service’s recommendation to help reduce straying of Wallowa Hatchery stock steelhead, primarily into the Deschutes River (mid-Columbia tributary). In 2007, we further reduced smolt releases to approximately 1.065 million, partly due to an increased release size from five to four fish per pound (fpp) for Wallowa stock, which is expected to increase smolt-to-adult survival, and due to a reduction of Imnaha stock Big Sheep direct stream releases. In 2009, smolt releases were reduced again to approximately 1.015 million, due to reductions in releases of Imnaha stock into Big Sheep Creek. Released smolts provide hatchery adult returns that contribute to recreational fisheries and may supplement natural spawning populations in northeast Oregon. Consumptive recreational fisheries for summer steelhead re-opened in 1986, in part as a result of increases in hatchery adult returns. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close