Fish Entrainment and Relicensing: Truths and Consequencesby John Pizzimenti, Harza Engineering Co, Portland, United States,
John Meldrim, Harza Engineering Co, Portland, United States,
Kevin Malone, Harza Engineering Co, Portland, United States,
Abstract: The states of Michigan, Wisconsin, and the U.S. Fish and Wildlife Service have issued guidelines that presuppose entrainment/turbine-induced mortality at most hydroelectric projects are having a significant impact on fisheries resources. Unfortunately, there has been little data to support or refute this assertion and study costs to irrefutably answer this question will be expensive. This paper provides representative examples of entrainment study results. We categorize them by type of resource and type of facility. We conclude that entrainment impacts at each project are highly dependent on the resource in question. Finally, we present an alternative approach that allows the use of common sense, economics and resource protection, such that the things we study and mitigate make the most sense for each specific project.
Subject Headings: Fish management | Entrainment | Licensure and certification | Hydro power | Power plants | Turbines | Economic factors | Hydraulics | Wildlife | North America | United States | Michigan | Wisconsin
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