Mortality of adult American shad passing through a 17-megawatt Kaplan turbine at a low-head hydroelectric dam

  • Bell C
  • Kynard B
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Abstract

In May 1982, we investigated the mortality of pre-spawning American shad (Alosa sapidissima) over a 5-hoar period after passage through the 17-megawatt Kaplan turbine at Holyoke Dam, Connecticnt River, Massachusetts. Radio telemetry was used to determine the survival of 36 test fish during 7 experiments by comparing their movement patterns with those of 21 sacrificed fish that were also passed through the turbine. Sixty-nine control fish fitted with dummy tags were released and held in an instream net for direct observation of mortality due to handling, tagging, and introdnction procedures. The mean turbine mortality of 3.3-36.2%). Similar preliminary experiments with post-spawned (I•T) was 21.5% (95% confidence American shad indicated that mortalities during their normal outmigration should be higher than the mortality estimate for pre- spawned fish.

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Authors

  • Charles E. Bell

  • Boyd Kynard

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