Fish Passage Through a Simulated Horizontal Bulb Turbine PRessure Regime: A Supplement to 'Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passes Fish'

摘要

Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the 'worst case' pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low-head dams. The results were compared to results from previous test series.