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Acoustic-tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) and juvenile Coho salmon (Oncorhynchus kisutch) detections in Tieton Reservoir, Yakima River, WA from 2024

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 03:17 AM | Dataset Last Updated: February 05, 2026 at 12:00 AM
A study was conducted in the Yakima River Basin in Washington state to evaluate behavior of juvenile Chinook salmon and Coho salmon upstream of Tieton Dam from April to November 2024. The goal of this study was to collect data useful for designing and siting downstream fish passage options at the dam. Under current operations, water is passed through the dam via a deep intake located on the reservoir floor (approximately 548 m upstream of the dam). Due to this sole route for water passage, hydroacoustic receivers were placed across the reservoir near the intake, and along the face of the dam to estimate the approach and residence time between the different locations. Receivers were also placed just downstream of two release locations to record fish movement downstream, as well as any potential upstream movement . Four receivers were deployed downstream of Tieton Dam to capture any fish passing Tieton Dam and moving downstream.

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