Climate Change Impacts Suggest Snake River Fish Passage Facilities Need ‘Thermal/Hydraulic’ Features

Modifications that could improve fish passage at Snake River hydro projects such as Lower Granite Dam will be necessary as apparent global warming moves the interior Pacific Northwest toward a future with higher summer temperatures, lower winter snowpack, longer, warmer summers with reduced river discharge, and stressful thermal conditions that stall spawning salmon and add unhealthy stress.

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