reports

TitleDescriptionYearAuthorsWebsitePDF
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2025 Annual Report.2026Brill, Gabriella, Parker E. Chambliss, Paul V. Dunlap, Lauren Holmes, John D. Hone, Nancy Leonard, Karah Roof, Kevin Rybacki, Ruthanna M. Shirley, Jadon Snauer, Grant Waltz, Dennis M. Werlau, and Eric C. Winther.www.pikeminnow.org/wp-content/uploads/2026/06/2025-Pikeminnow-AR.pdf
Leveraging PIT tag data to better understand Northern Pikeminnow movement in the Columbia River basinThe movement of Northern Pikeminnow within the Columbia River basin between 2003 and 2022 was studied using passive integrated transponder tag data.2025Diallo, Jessica O., Beth L. Sanderson, Katie A. Barnas, James R. Faulkner, Grant T. Waltz, Eric C. Winther, and Julian D. Olden.academic.oup.com/tafs/article-abstract/155/1/64/8346097
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1990 Annual Report.1991Nigro, Anthony, Steven Vigg, Craig Burley, David Ward, Christine Mallette, Scott Smith, Mark Zimmerman, Susan Hanna, Jon Pampush, S.B. Mathews, T.K. Iverson, L.J. Bledsoe and A.F. Johnston.www.pikeminnow.org/wp-content/uploads/2026/04/1990-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1991 Annual Report.1992Nigro, Anthony, and Charles Willis.www.pikeminnow.org/wp-content/uploads/2026/04/1991-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1992 Annual Report.1993Willis, Charles, David Ward, and Anthony Nigro.www.pikeminnow.org/wp-content/uploads/2026/04/1992-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1993 Annual Report.1994Willis, Charles, and David Ward.www.pikeminnow.org/wp-content/uploads/2026/04/1993-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1994 Annual Report.1995Willis, Charles, Franklin Young, Scott Smith, Dennis GiIliland, Eric Winther, Marc Petersen, Eric Mattson, Stacie Kelsey, Janice Suarez-Pena, John Hisata, Russell Porter, CRITFC, Ken Collis, Roy Beaty, Jack McCormack, Kathy McRae, and Jon Pampush.www.pikeminnow.org/wp-content/uploads/2026/04/1994-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implemenation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin (Northern Squawfish Management Program)1995 Annual Report.1996Young, Franklin, John Hisata, Marc Petersen, Dennis Gilliland, Eric Winther, Scott Smith, Janice Suarez-Pena, Russell Porter, Ken Collis, Kathy McRae, Jack McCormack, and Roy Beaty.www.pikeminnow.org/wp-content/uploads/2026/04/1995-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1996 Annual Report.1997Young, Franklin, Eric Winther, John Hisata, Marc Petersen, Michael Hagen, Renae Welling, Russell Porter, CRITFC, Thomas Friesen, Mark Zimmerman, and David Ward.www.pikeminnow.org/wp-content/uploads/2026/04/1996-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program; Northern Squawfish Management Program – Implementation1997 Annual Report.1998Young, Franklin.www.pikeminnow.org/wp-content/uploads/2026/04/1997-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1998 Annual Report.1999Young, Franklin, Mark Wachtel, Marc Petersen, John Hisata, Eric Winther, Renae Welling, Russell Porter, Roy Beaty, Kevin Leader, Mark Zimmerman, and Thomas Friesen.www.pikeminnow.org/wp-content/uploads/2026/04/1998-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predator Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin1999 Annual Report.2000Young, Franklin, Lyle Fox, Jennifer Amren, Bryce Glaser, Mark Wachtel, Eric Winther, Russell Porter, Roy Beaty, Mark Zimmerman, Thomas Friesen, David Ward, and Howard Takata.www.pikeminnow.org/wp-content/uploads/2026/04/1999-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2024 Annual Report.2025Winther, Eric, Grant Waltz, Allan Martin, Ruthanna Shirley, Paul Dunlap, John Hone, Dennis Werlau, Lauren Holmes, Jadon Snauer, Karah Roof, and Parker Chambliss.www.pikeminnow.org/wp-content/uploads/2026/04/2024-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2023 Annual Report.2024Winther, Eric, Grant Waltz, Allan Martin, John Hone, Ruthanna Shirley, Dennis Werlau, Paul Dunlap, Kevin Rybacki, Karah Roof, Parker Chambliss, and Jadon Snauer.www.pikeminnow.org/wp-content/uploads/2026/04/2023-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2022 Annual Report.2023Winther, Eric, Grant Waltz, Allan Martin, Dennis Werlau, John Hone, Ruthanna Shirley, Diana Murillo, Paul Dunlap, Kevin Rybacki, Charles Barr, Andrea Carpenter, Kelsey Anderson, Parker Chambliss, Mason Rozgowski, and Benjamin Stablow.www.pikeminnow.org/wp-content/uploads/2026/04/2022-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2021 Annual Report.2022Winther, Eric, Grant Waltz, Allan Martin, Paul Dunlap, Ruthanna Shirley, Dennis Werlau, Diana Murillo, John Hone, Kevin Rybacki, Charles Barr, Andrea Carpenter, Kelsey Anderson, Elijah Lamb, and Parker Chambliss.www.pikeminnow.org/wp-content/uploads/2026/04/2021-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2020 Annual Report.2021Winther, Eric, Charles Barr, Craig Miller, Chris Wheaton, John Hone, Paul Dunlap, Ruthanna Shirley, Andrea Carpenter, Zane Kroneberger, and Parker Chambliss.www.pikeminnow.org/wp-content/uploads/2026/04/2020-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2019 Annual Report.2020Winther, Eric, Charles Barr, Craig Miller, Chris Wheaton, John Hone, Paul Dunlap. Ruthanna Shirley, Chris Williams, Eric Anderson, and Andrea Carpenter.www.pikeminnow.org/wp-content/uploads/2026/04/2019-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2018 Annual Report.2019Williams, Steve, Eric Winther, Charles Barr, Craig Miller, John Hone, Ruthanna Shirley, Paul Dunlap, Andrea Carpenter, Eric Anderson, and Eric Tinus.www.pikeminnow.org/wp-content/uploads/2026/04/2018-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2017 Annual Report.2018Williams, Steve, Eric Winther, Charles Barr, Craig Miller, Ruthanna Shirley, John Hone, Paul Dunlap, Andrea Carpenter, Eric Tinus, and Parker Chambliss.www.pikeminnow.org/wp-content/uploads/2026/04/2017-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2016 Annual Report.2017Williams, Steve, Eric Winther, Charles Barr, Ruthanna Shirley, John Hone, Paul Dunlap, Craig Miller, Andrea Carpenter, Eric Tinus, Parker Chambliss, Rean Drake, Eric Anderson, Mike Lovejoy, and Matt Gardner.www.pikeminnow.org/wp-content/uploads/2026/04/2016-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Northern Pikeminnow Sport Reward Program2015 Annual Report.2016Williams, Steve, Eric Winther, Adam Storch, Paul Dunlap, Ruthanna Shirley, John Hone, Craig Miller, Charles Barr, Eric Tinus, Kevin Rybacki, Andrea Launer, Ruth Farr, and Christine Mallette.www.pikeminnow.org/wp-content/uploads/2026/04/2015-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2014 Annual Report.2015Williams, Steve, Paul Dunlap, John Hone, Ruthanna Shirley, Eric Winther, Craig Miller, Eric Tinus, Charles Barr, Kevin Rybacki, Emma Bell, Christine Mallette, and Adam Storch.www.pikeminnow.org/wp-content/uploads/2026/04/2014-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2013 Annual Report.2014Williams, Steve, John Hone, Eric Winther, Paul Dunlap, Craig Miller, Charles Barr, Eric Tinus, Matthew Gardner, Christine Mallette, and Adam Storch.www.pikeminnow.org/wp-content/uploads/2026/04/2013-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2012 Annual Report2013Porter, Russell, John Hone, Eric Winther, Paul Dunlap, Matthew Gardner, Eric Tinus, Michele Hughes Weaver, Christine Mallette, and Erick Van Dyke.www.pikeminnow.org/wp-content/uploads/2026/04/2012-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2011 Annual Report.2012Porter, Russell, John Hone, Eric Winther, Paul Dunlap, Michele Hughes Weaver, Eric Tinus, Matt Gardner, Christine Mallette, Peter McHughwww.pikeminnow.org/wp-content/uploads/2026/04/2011-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2010 Annual Report.2011Porter, Russell, Eric Winther, Paul Dunlap, Kathleen Moyer, John Hone, Howard Takata, Aaron McAlexander, Michele Hughes Weaver, Jeremy Cameron, and Peter McHugh.www.pikeminnow.org/wp-content/uploads/2026/04/2010-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2009 Annual Report.2010Porter, Russell, John Hone, Paul Dunlap, Kathleen Moyer, Eric Winther, Michele Hughes Weaver, Howard Takata, and Erick Van Dyke.www.pikeminnow.org/wp-content/uploads/2026/04/2009-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2008 Annual Report.2009Porter, Russell, Eric Winther, John Hone, Paul Dunlap, Kathleen Moyer, Michele Hughes Weaver, Howard Takata, Martyne Reesman, and Erick Van Dyke.www.pikeminnow.org/wp-content/uploads/2026/04/2008-Pikeminnow-AR.pdf
Report on the Predation Index, Predator Control Fisheries, and Program Evaluation for the Columbia River Basin Experimental Northern Pikeminnow Management Program2007 Annual Report.2008Porter, Russell, John Hone, Eric Winther, Paul Dunlap, Kathleen Moyer, Michele Hughes Weaver, Howard Takata, Martyne Reesman, Les Layng, George Reed, and Tucker Jones.www.pikeminnow.org/wp-content/uploads/2026/04/2007-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2006 Annual Report.2007Porter, Russell, Eric Winther, John Hone, Richard Bruce, Howard Takata, Martyne Reesman, George Reed, Les Layng, and Tucker Jones.www.pikeminnow.org/wp-content/uploads/2026/04/2006-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2005 Annual Report.2006Porter, Russell, Richard Bruce, Eric Winther, John Hone, Paul Dunlap, Martyne Reesman, Tucker Jones, Matthew Hutchinson, and Thomas Friesen.www.pikeminnow.org/wp-content/uploads/2026/04/2005-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2004 Annual Report.2005Porter, Russell, John Hone, Richard Bruce, Julie Memarian, Eric Winther, Tucker Jones, James Koloszar, Martyne Reesman, Thomas Friesen, and Howard Takata.www.pikeminnow.org/wp-content/uploads/2026/04/2004-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2003 Annual Report.2004Porter, Russell, John Hone, Richard Bruce, Julie Memarian, Eric Winther, Howard Takata, and James Koloszar.www.pikeminnow.org/wp-content/uploads/2026/04/2003-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2002 Annual Report.2003Porter, Russell, Eric Winther, Lyle Fox, John Hone, Julie Memarian, Howard Takata, and Thomas Friesen.www.pikeminnow.org/wp-content/uploads/2026/04/2002-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2001 Annual Report.2002Porter, Russell, Eric Winther, Lyle Fox, Mark Wachtel, Bryce Glaser, George Lee, Howard Takata, and David Ward.www.pikeminnow.org/wp-content/uploads/2026/04/2001-Pikeminnow-AR.pdf
Development of a System-wide Predator Control Program: Stepwise Implementation of a Predation Index, Predator Control Fisheries, and Evaluation Plan in the Columbia River Basin2000 Annual Report.2001Porter, Russell, Bryce Glaser, Jennifer Amren, Lyle Fox, Mark Wachtel, Eric Winther, Roy Beaty, Howard Takata, and David Ward.www.pikeminnow.org/wp-content/uploads/2026/04/2000-Pikeminnow-AR.pdf
Evaluation of the Northern Squawfish Management ProgramThe final report of research conducted from 1990-96 by the Oregon Department of Fish and Wildlife (ODFW) to evaluate Bonneville Power Administration (BPA) project 90-007, the Northern Squawfish Management Program (NSMP).1998Ward, D.L.www.pikeminnow.org/wp-content/uploads/2026/04/Ward-1990-1996-EVALUATION-OF-THE-NORTHERN-SQUAWFISH-MANAGEMENT-Final-Report-of-Research-1990-96.pdf
Economic Evaluation of the Northern Pikeminnow Management ProgramEconomic analysis results for the Northern Pikeminnow Management Program.2004Radtke, H.D., C.N. Carter, and S.W. Davis.www.pikeminnow.org/wp-content/uploads/2026/04/2004-RadtkeCarterDavis-EconEvalPikeminnow-ER.pdf
Northern Pikeminnow Management Program EvaluationEvaluate predator control fisheries and establish an index of predation by Northern Pikeminnow and other piscivorous fishes on juvenile salmonids in the lower Columbia and Snake Rivers.2013Storch, A.J., C. Mallette and S. Williams.www.pikeminnow.org/wp-content/uploads/2026/04/2013-StorchMalletteWilliams_Pikeminnow-RME.pdf