Title

Hydraulics of Alaska Steeppass Fishway Model A40

Authors

M Odeh

Publication Date

1993

Keywords

baffles, channel, denil, habitat, hydraulics, migration, models, pool, pool and weir, pool type, rating curves, slope, spawning, steeppass, structures, vertical slot, weir, weir type

Report number

Research Information Bulletin 95

Publisher

United States Department of the Interior

Abstract

Fishways are hydraulic structures that assist migrating fish in overcoming obstacles blocking their way to spawning, feeding or other habitat. Fishways can be divided into three types: Pool and Weir, Vertical Slot and Denil. An Alaska steeppass fishway is a denil-type fishway developed by G.L. Ziemer in 1962 - essentially a straight rectangular channel with baffles placed on its sides and bottom. In our study, we used the Model A40.

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