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Acoustic-tagged juvenile Chinook salmon (Oncorhynchus tshawytscha), steelhead (O. mykiss), and sockeye salmon (O. nerka) detections in the Yakima River, Washington, 2018-2024 (ver. 1.1, September 2025)

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 05:52 AM | Dataset Last Updated: September 30, 2025 at 12:00 AM
Juvenile Chinook salmon (age 0 and age 1), steelhead, and sockeye salmon were tagged with acoustic transmitters and released at sites along the Yakima River in and below Yakima, WA from 2018 to 2024. Detection sites varied across years but included arrays placed at diversion dams, canals, hydropower facilities, and other locations throughout the Yakima and Columbia rivers. Study design included paired fish releases above and below irrigation diversions to evaluate effects on fish movement and survival. Overall, the purpose of this study was to evaluate the effects of barriers and other structures on juvenile Chinook salmon, steelhead, and sockeye salmon behavior and survival across variable hydrological conditions. The data and metadata were revised on September 25, 2025 to improve the Data Quality Process Step documentation, correct the time zone on some of the externally downloaded data, and correct a few minor errors (remove extra space, add a column). See Revision history 1.1 Sept 2025 Acoustic tagged Chinook steelhead sockeye in Yakima River 2018 to 2024.txt for specific details.

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