Reclamation Information Sharing Environment (RISE)

Barriers to migration contribute to declining populations of Pacific Lamprey (Entosphenus tridentatus) throughout the West, but little is known about their migration patterns and effects of dams and water diversions. Telemetry has been used to describe dam-passage routes and survival of juvenile salmon and steelhead for decades. Juvenile The Dept. of Energy-Pacific Northwest National Laboratory has been developing a micro-transmitter specifically for use in juvenile lampreys, eels, and other small fishes. Through a collaborative research approach, we used prototype transmitters to do a pilot-level evaluation of tagged lamprey movements in the Yakima and Columbia Rivers. We partnered with an ongoing telemetry study being conducted by the U.S. Geological Survey (USGS), the Bureau of Reclamation (Reclamation), and Yakama Nation Fisheries (YNF). Two USGS Open-File Reports were prepared for this study, an interim and final report. The reports contain detailed descriptions of the study background, methods, and results. The USGS reports are attached to this S&T report as Appendix A and Appendix B and are also available at the links below: Appendix A: Movements of Juvenile Pacific Lamprey (Entosphenus tridentatus) in the Yakima and Columbia Rivers, Washington, 2018—A Pilot Study Using Acoustic Telemetry, USGS Open-File Report 2019-1058, https://pubs.usgs.gov/publication/ofr20191058 Appendix B: Monitoring the Movements of Juvenile Pacific Lamprey (Entosphenus tridentatus) in the Yakima River, Washington Using Acoustic Telemetry, 2019-20, USGS Open-File Report 2022–1052, https://pubs.usgs.gov/publication/ofr20221052 Data collected during the study is stored and publicly available at: Pacific States Marine Fisheries Commission, 2022, app.streamnet.org-/files/822/: Pacific States Marine Fisheries Commission, StreamNet—Fish Data for the Northwest data files, accessed May 9, 2022, at https://app.streamnet.org/files/822/.