Mortality of Juvenile American Shad and Blueback Herring Passed through a Low-Head Kaplan Hydroelectric Turbine
Alosa sapidissima, American shad, blueback herring, Connecticut River, herring, Holyoke, Holyoke Dam, hydroelectric, juvenile, Kaplan turbine, mortality, power output, shad, turbines, wicket gate
Journal or Book Title
Transactions of the American Fisheries Society
Immediate mortality of juvenile alosids, American shad Alosa sapidissima and blueback herring A. aestivalis, passed through the 17-MW Kaplan turbine at Holyoke Dam on the Connecticut River was estimated with mark-capture methods. Turbine-induced mortality was 62% at 16.5-MW generation, 82% at 12 MW, and 82% at 5.5 MW. The significantly lower mortality of fish at full power output is thought to be related to greater turbine efficiency.