DeNiel fishway
a chute with lateral baffles that reduce the water\'s energy and leave a clear passage for fish to swim over the low barrier. There are no resting areas although pools may be provided for this purpose or to reduce flow velocity. See also pool-and-weir ladder, rock-ramp fishway and vertical slot fish passage

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • denil fishway — DeNiel fishway …   Dictionary of ichthyology

  • rock-ramp fishway — a structure allowing fish to pass a barrier. Large rocks and timbers are used to build pools and small falls that mimic natural structures. This fishway only works over short distances because of the length of the channel needed for the ladder.… …   Dictionary of ichthyology

  • vertical slot fish passage — this fishway is similar to a pool and weir ladder except that each dam has a narrow slot in it near the channel wall. The channel allows fish to swim upstream without having to leap over the dam wall. This type of …   Dictionary of ichthyology

  • pool-and-weir ladder — a series of small dams making pools of regular length in a long, sloping channel for fish to travel around a dam. Fish jump from pool to pool in the ladder. See also rock ramp fishway, vertical slot fish passage and DeNiel fishway …   Dictionary of ichthyology

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