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Columbia River Fish Counts 2026: Comprehensive Data, Monitoring Methods, and Run Dynamics

"Understanding fish counts on the Columbia River is essential for commercial fishers, tribal co-managers, recreational anglers, and conservation biologists alike. The Columbia River basin represents one of the most heavily engineered and intensely monitored aquatic ecosystems in North America. Managing Pacific salmon, steelhead, lamprey, and shad requires real-time data acquisition at key hydroelectric facilities. As of 2026, state, federal, and tribal agencies rely on a combination of visual counting windows, modern hydroacoustic sonar, and passive integrated transponder (PIT) tag interrogation systems to track fish passage. This guide examin..."

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