Fish survival on fine mesh traveling screens |
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| Institution: | 1. Joint Center for Satellite Data Assimilation, NOAA Center for Weather and Climate Prediction, 5830 University Research Ct, 20740 College Park, MD, USA;2. Department of Atmospheric Sciences, Texas A&M University, 3150 TAMU, 77840 College Station, TX, USA;3. Department of Earth System Science and Policy, University of North Dakota, 58202 Grand Forks, ND, USA;1. Department of Biology, Memorial University of Newfoundland, St. John''s, NL A1B 3X9, Canada;2. Department of Biochemistry, Memorial University of Newfoundland, St. John''s, NL A1B 3X9, Canada;1. The Jacob Blaustein Institutes for Desert Research, Zuckerberg Institute for Water Research, The Albert Katz International School of Desert Studies, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990 Midreshet Ben-Gurion, Israel;2. Faculty of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa 32000, Israel;1. CIEMAT-Plataforma Solar de Almería, Ctra. de Senés s/n, 04200 Tabernas, Almería, Spain;2. Laboratorio de Investigaciones Medioambientales de Zonas Áridas (LIMZA), Universidad de Tarapacá, Av. General Velásquez 1775, Arica, Chile;3. Escuela Universitaria de Ingeniería Mecánica (EUDIM), Universidad de Tarapacá, Av. General Velásquez 1775, Arica, Chile |
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| Abstract: | The survival of fish impinged on 1-mm mesh Ristroph-type traveling screens was evaluated at Somerset Station, a 625-MW coal-fired electric generating station located on the south shore of Lake Ontario. Somerset Station was designed and built with an offshore intake, discharge and fish return system. Survival testing was conducted over a 4-year period that included all four seasons. Test fish were diverted from the fish return and held for 96 h for observation. Following observation, a specially constructed screening table was used to differentiate test fish that typically would have been impinged on a standard 9.5-mm mesh screen from smaller individuals that typically would be entrained. Twenty-eight species were tested, and collections were dominated by five species: alewife, emerald shiner, gizzard shad, rainbow smelt, and spottail shiner. Survival rates commonly approached or exceeded 80%, and were influenced by species, fish size or life stage, season and fish condition. Results are interpreted in terms of survival rates demonstrated elsewhere for entrained fish and fish impinged on alternative traveling screen technologies. |
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