Without New Spillway Detectors Hard To Know If Higher Spill At Columbia/Snake Dams Is Benefitting Salmon

Entering another spring season of Columbia River basin salmon and steelhead juveniles being moved downriver with much higher spill levels at federal hydropower dams than in the past, the monitoring of results of such operations has become difficult. Higher spill is pushing tagged smolts away from detection facilities, which creates data gaps when measuring the effectiveness of more spill for fish. 

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