Timothy Counihan (Former Employee)
Science and Products
Filter Total Items: 59
Developing a quality assurance plan for telemetry studies: A necessary management tool for an effective study Developing a quality assurance plan for telemetry studies: A necessary management tool for an effective study
Telemetry has been used to answer various questions associated with research, management, and monitoring programs and to monitor animal behavior and population dynamics throughout the world. Many telemetry projects have been developed to study the passage, behavior, and survival of migrating adult and juvenile salmonids at hydroelectric projects on the mainstem Columbia and Snake rivers...
Authors
Jill M. Hardiman, Christopher E. Walker, Timothy D. Counihan
Assessing native and introduced fish predation on migrating juvenile salmon in Priest Rapids and Wanapum Reservoirs, Columbia River, Washington, 2009--11 Assessing native and introduced fish predation on migrating juvenile salmon in Priest Rapids and Wanapum Reservoirs, Columbia River, Washington, 2009--11
Hydroelectric development on the mainstem Columbia River has created a series of impoundments that promote the production of native and non-native piscivores. Reducing the effects of fish predation on migrating juvenile salmonids has been a major component of mitigating the effects of hydroelectric development in the Columbia River basin. Extensive research examining juvenile salmon...
Authors
Timothy D. Counihan, Jill M. Hardiman, Dave S. Burgess, Katrina E. Simmons, Glen S. Holmberg, Josh A. Rogala, Rochelle R. Polacek
Assessing fish predation on migrating juvenile steelhead and a retrospective comparison to steelhead survival through the Priest Rapids Hydroelectric Project, Columbia River, Washington, 2009-11 Assessing fish predation on migrating juvenile steelhead and a retrospective comparison to steelhead survival through the Priest Rapids Hydroelectric Project, Columbia River, Washington, 2009-11
The U.S. Geological Survey (USGS) and the Washington Department of Fish and Wildlife (WDFW) have been working with the Public Utility District No. 2 of Grant County, Washington (Grant PUD), to increase their understanding of predator-prey interactions in the Priest Rapids Hydroelectric Project (PRP), Columbia River, Washington. For this study, the PRP is defined as the area approximately...
Authors
Jill M. Hardiman, Timothy D. Counihan, Dave S. Burgess, Katrina E. Simmons, Glen S. Holmberg, Josh Rogala, Rochelle Polacek
Columbia River Estuary ecosystem classification—Concept and application Columbia River Estuary ecosystem classification—Concept and application
This document describes the concept, organization, and application of a hierarchical ecosystem classification that integrates saline and tidal freshwater reaches of estuaries in order to characterize the ecosystems of large flood plain rivers that are strongly influenced by riverine and estuarine hydrology. We illustrate the classification by applying it to the Columbia River estuary...
Authors
Charles A. Simenstad, Jennifer L. Burke, Jim E. O'Connor, Charles Cannon, Danelle W. Heatwole, Mary F. Ramirez, Ian R. Waite, Timothy D. Counihan, Krista L. Jones
Guidelines for conducting Smolt survival studies in the Columbia River Guidelines for conducting Smolt survival studies in the Columbia River
For more than a decade, investigators from different research groups in the Pacific Northwest have been using electronic tags to estimate survival of salmonid smolts as they migrate seaward past hydroelectric dams and through impoundments on the Snake and Columbia Rivers. Over the years, they have refined both analytical and field methods associated with such studies. In this...
Authors
Albert Giorgi, Skalski, Chuck Pevin, Steve Smith, Mike Langeslay, Timothy D. Counihan, Russell W. Perry, Shane Bickford
Assessing survival for Mid-Columbia River released juvenile salmonids at McNary Dam in 2006 and 2007 Assessing survival for Mid-Columbia River released juvenile salmonids at McNary Dam in 2006 and 2007
n/a
Authors
J.M. Hardiman, C. E. Walker, E.C. Jones, T.D. Counihan, N.S. Adams
Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam
n/a
Authors
A.L. Puls, T.D. Counihan, C. E. Walker, J.M. Hardiman, I.N. Duran
Survival and migration behavior of juvenile salmonids at Lower Granite Dam, 2006 Survival and migration behavior of juvenile salmonids at Lower Granite Dam, 2006
We described behavior and estimated passage and survival parameters of juvenile salmonids during spring and summer migration periods at Lower Granite Dam in 2006. During the spring, the study was designed to examine the effects of the Behavioral Guidance Structure (BGS) by using a randomized-block BGS Stored / BGS Deployed treatment design. The summer study was designed to compare...
Authors
John W. Beeman, Scott D. Fielding, Amy C. Braatz, Tamara S. Wilkerson, Adam C. Pope, Christopher E. Walker, Jill M. Hardiman, Russell W. Perry, Timothy D. Counihan
Passage, survival, and approach patterns of radio-tagged juvenile salmonids at Little Goose Dam, 2006 Passage, survival, and approach patterns of radio-tagged juvenile salmonids at Little Goose Dam, 2006
No abstract available.
Authors
J.W. Beeman, A.C. Braatz, S.D. Fielding, J.M. Hardiman, C. E. Walker, A.C. Pope, T.S. Wilkerson, D.J. Shurtleff, R.W. Perry, T.D. Counihan
Survival estimates of migrant juvenile Salmonids through Bonneville Dam using radio telemetry, 2004 Survival estimates of migrant juvenile Salmonids through Bonneville Dam using radio telemetry, 2004
During 2004, the USGS evaluated the survival of radio-tagged yearling and subyearling Chinook salmon and steelhead trout through the ice and trash sluiceway and the minimum gap runner (MGR) turbine unit at Bonneville Dam’s powerhouse 1. Survival was estimated using paired release-recapture models with paired releases made directly into these passage routes and in the tailrace of...
Authors
Timothy D. Counihan, Jill Hardiman, Chris Walker, Amy Puls, Glen Holmberg
Survival estimates of migrant juvenile salmonids through Bonneville Dam using radio telemetry, 2005 Survival estimates of migrant juvenile salmonids through Bonneville Dam using radio telemetry, 2005
During 2005, we evaluated the survival of radio-tagged yearling and subyearling Chinook salmon and steelhead trout through the Bonneville Dam spillway, powerhouses 1 and 2, the corner collector and juvenile bypass system (JBS) at powerhouse 2, and through all routes collectively using the route-specific survival model. Radio-tagged fish were released at The Dalles Dam and in the tailrace...
Authors
Timothy D. Counihan, Jill M. Hardiman, Chris Walker, Amy Puls, Glen Holmberg
Science and Products
Filter Total Items: 59
Developing a quality assurance plan for telemetry studies: A necessary management tool for an effective study Developing a quality assurance plan for telemetry studies: A necessary management tool for an effective study
Telemetry has been used to answer various questions associated with research, management, and monitoring programs and to monitor animal behavior and population dynamics throughout the world. Many telemetry projects have been developed to study the passage, behavior, and survival of migrating adult and juvenile salmonids at hydroelectric projects on the mainstem Columbia and Snake rivers...
Authors
Jill M. Hardiman, Christopher E. Walker, Timothy D. Counihan
Assessing native and introduced fish predation on migrating juvenile salmon in Priest Rapids and Wanapum Reservoirs, Columbia River, Washington, 2009--11 Assessing native and introduced fish predation on migrating juvenile salmon in Priest Rapids and Wanapum Reservoirs, Columbia River, Washington, 2009--11
Hydroelectric development on the mainstem Columbia River has created a series of impoundments that promote the production of native and non-native piscivores. Reducing the effects of fish predation on migrating juvenile salmonids has been a major component of mitigating the effects of hydroelectric development in the Columbia River basin. Extensive research examining juvenile salmon...
Authors
Timothy D. Counihan, Jill M. Hardiman, Dave S. Burgess, Katrina E. Simmons, Glen S. Holmberg, Josh A. Rogala, Rochelle R. Polacek
Assessing fish predation on migrating juvenile steelhead and a retrospective comparison to steelhead survival through the Priest Rapids Hydroelectric Project, Columbia River, Washington, 2009-11 Assessing fish predation on migrating juvenile steelhead and a retrospective comparison to steelhead survival through the Priest Rapids Hydroelectric Project, Columbia River, Washington, 2009-11
The U.S. Geological Survey (USGS) and the Washington Department of Fish and Wildlife (WDFW) have been working with the Public Utility District No. 2 of Grant County, Washington (Grant PUD), to increase their understanding of predator-prey interactions in the Priest Rapids Hydroelectric Project (PRP), Columbia River, Washington. For this study, the PRP is defined as the area approximately...
Authors
Jill M. Hardiman, Timothy D. Counihan, Dave S. Burgess, Katrina E. Simmons, Glen S. Holmberg, Josh Rogala, Rochelle Polacek
Columbia River Estuary ecosystem classification—Concept and application Columbia River Estuary ecosystem classification—Concept and application
This document describes the concept, organization, and application of a hierarchical ecosystem classification that integrates saline and tidal freshwater reaches of estuaries in order to characterize the ecosystems of large flood plain rivers that are strongly influenced by riverine and estuarine hydrology. We illustrate the classification by applying it to the Columbia River estuary...
Authors
Charles A. Simenstad, Jennifer L. Burke, Jim E. O'Connor, Charles Cannon, Danelle W. Heatwole, Mary F. Ramirez, Ian R. Waite, Timothy D. Counihan, Krista L. Jones
Guidelines for conducting Smolt survival studies in the Columbia River Guidelines for conducting Smolt survival studies in the Columbia River
For more than a decade, investigators from different research groups in the Pacific Northwest have been using electronic tags to estimate survival of salmonid smolts as they migrate seaward past hydroelectric dams and through impoundments on the Snake and Columbia Rivers. Over the years, they have refined both analytical and field methods associated with such studies. In this...
Authors
Albert Giorgi, Skalski, Chuck Pevin, Steve Smith, Mike Langeslay, Timothy D. Counihan, Russell W. Perry, Shane Bickford
Assessing survival for Mid-Columbia River released juvenile salmonids at McNary Dam in 2006 and 2007 Assessing survival for Mid-Columbia River released juvenile salmonids at McNary Dam in 2006 and 2007
n/a
Authors
J.M. Hardiman, C. E. Walker, E.C. Jones, T.D. Counihan, N.S. Adams
Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam
n/a
Authors
A.L. Puls, T.D. Counihan, C. E. Walker, J.M. Hardiman, I.N. Duran
Survival and migration behavior of juvenile salmonids at Lower Granite Dam, 2006 Survival and migration behavior of juvenile salmonids at Lower Granite Dam, 2006
We described behavior and estimated passage and survival parameters of juvenile salmonids during spring and summer migration periods at Lower Granite Dam in 2006. During the spring, the study was designed to examine the effects of the Behavioral Guidance Structure (BGS) by using a randomized-block BGS Stored / BGS Deployed treatment design. The summer study was designed to compare...
Authors
John W. Beeman, Scott D. Fielding, Amy C. Braatz, Tamara S. Wilkerson, Adam C. Pope, Christopher E. Walker, Jill M. Hardiman, Russell W. Perry, Timothy D. Counihan
Passage, survival, and approach patterns of radio-tagged juvenile salmonids at Little Goose Dam, 2006 Passage, survival, and approach patterns of radio-tagged juvenile salmonids at Little Goose Dam, 2006
No abstract available.
Authors
J.W. Beeman, A.C. Braatz, S.D. Fielding, J.M. Hardiman, C. E. Walker, A.C. Pope, T.S. Wilkerson, D.J. Shurtleff, R.W. Perry, T.D. Counihan
Survival estimates of migrant juvenile Salmonids through Bonneville Dam using radio telemetry, 2004 Survival estimates of migrant juvenile Salmonids through Bonneville Dam using radio telemetry, 2004
During 2004, the USGS evaluated the survival of radio-tagged yearling and subyearling Chinook salmon and steelhead trout through the ice and trash sluiceway and the minimum gap runner (MGR) turbine unit at Bonneville Dam’s powerhouse 1. Survival was estimated using paired release-recapture models with paired releases made directly into these passage routes and in the tailrace of...
Authors
Timothy D. Counihan, Jill Hardiman, Chris Walker, Amy Puls, Glen Holmberg
Survival estimates of migrant juvenile salmonids through Bonneville Dam using radio telemetry, 2005 Survival estimates of migrant juvenile salmonids through Bonneville Dam using radio telemetry, 2005
During 2005, we evaluated the survival of radio-tagged yearling and subyearling Chinook salmon and steelhead trout through the Bonneville Dam spillway, powerhouses 1 and 2, the corner collector and juvenile bypass system (JBS) at powerhouse 2, and through all routes collectively using the route-specific survival model. Radio-tagged fish were released at The Dalles Dam and in the tailrace...
Authors
Timothy D. Counihan, Jill M. Hardiman, Chris Walker, Amy Puls, Glen Holmberg