Results of Field Evaluations of the New Modular Inclined Fish Diversion Screen

by F. C. Winchell,
S. V. Amaral,
E. P. Taft,
T. C. Cook,
A. W. Plizga,
E. M. Paolini,
C. W. Sullivan,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


The Electric Power Research Institute (EPRI) has developed and biologically evaluated a new type of fish diversion screen known as the Modular Inclined Screen (MIS). The MIS is designed to operate at any type of water intake with water velocities approaching the screen of up to 3.05 ms During 1992 and 1993, a biological evaluation of the MIS was conducted in the laboratory with juveniles of eleven species. Net passage survival typically exceeded 99% at velocities up to 1.83 ms for most species, and exceeded 99% overall (all velocities combined) for four species. On the basis of these results, a prototype MIS was constructed and evaluated at Niagara Mohawk Power Corporations Green Island Hydroelectric Project on the Hudson River. Field evaluations of this first MIS in the fall of 1995 showed the screen to be highly effective in diverting juvenile rainbow trout and golden shiners over the full range of velocities evaluated (0.6 to 2.3 ms). Although testing with juvenile blueback herring was limited by low abundance, tests indicated that successful passage of this species may require velocities in the lower half of this range.

Subject Headings: Fish and fishery management | Field tests | Water intakes | Hydro power | Electric power | Biological processes | Sustainable development | Hudson River

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