Evaluation of adult pacific lamprey passage at Lower Columbia River dams and behavior in relation to fishway modifications at Bonneville and John Day Dams - 2014

Technical Report 2015-10-FINAL ________________________________________________________________ EVALUATION OF ADULT PACIFIC LAMPREY PASSAGE AT LOWER COLUMBIA RIVER DAMS AND BEHAVIOR IN RELATION TO FISHWAY MODIFICATIONS AT BONNEVILLE AND JOHN DAY DAMS - 2014 Study Code: LMP-P-13-1 T.S. Clabough, E.L. Johnson, M.L. Keefer, C.C. Caudill, C.J. Noyes, J. Garnett, L. Layng, T. Dick, and M.A. Jepson Department of Fish and Wildlife Sciences University of Idaho, Moscow, Idaho 83844-1136 and K.E. Frick, S.C. Corbett, and B.J. Burke Northwest Fisheries Science Center National Marine Fisheries Service 2725 Montlake Blvd. East, Seattle, Washington 98112 For U.S. Army Corps of Engineers Portland District 2015 ii Technical Report 2015-10-FINAL __________________________________________________________________ EVALUATION OF ADULT PACIFIC LAMPREY PASSAGE AT LOWER COLUMBIA RIVER DAMS AND BEHAVIOR IN RELATION TO FISHWAY MODIFICATIONS AT BONNEVILLE AND JOHN DAY DAMS - 2014 Study Code: LMP-P-13-1 T.S. Clabough, E.L. Johnson, M.L. Keefer, C.C. Caudill, C.J. Noyes, J. Garnett, L. Layng, T. Dick, and M.A. Jepson Department of Fish and Wildlife Sciences University of Idaho, Moscow, Idaho 83844-1136 and K.E. Frick, S.C. Corbett, and B.J. Burke Northwest Fisheries Science Center National Marine Fisheries Service 2725 Montlake Blvd. East, Seattle, Washington 98112 For U.S. Army Corps of Engineers Portland District 2015 iii Acknowledgements Many people assisted in the field work and data compilation for this report. We are grateful for the assistance from the USACE Portland District and project biologists. They include: Brian Bissell, Ben Hausmann, Tammy Mackey, Nathan Zorich, Jon Rerecich, Ida Royer, Sean Tackley, and Andrew Traylor. Others at the Bonneville Lock and Dam that supported the project include the electrical and crane crews. Successful completion of this work was also made possible with help from Mike Hanks at NOAA Fisheries. University of Idaho staff members who assisted with fish