8020

• UCREFRP Catalog Number: 8020
• Author: Horak, G. C.
• Title: Proceedings of the Symposium on Mitigating Developmental Impacts on Fish and Wildlife.
• USFW Year: 1979.
• USFW - Doc Type: March 1979.
• Copyright Material: NO

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No. of % of % of % of
Measures Measures Measures Measures
Reconvnended Rejected Modi fi ed Accepted
TOTAL 432 25 12 63
Habi tat Improvement Measures 279 29 16 55
Reservoir flood basins 35 17 11 72
Reservoir conservation pools 26 19 8 73
Dam discharge systems 15 33 13 54
Streamfl ows, ri ffl es and pools 90 33 21 46
Streambank protection 6 17 50 33
General practices 107 31 13 56
POpulation Improvement Measures 153 17 5 78
Fish propagation 33 12 6 82
Fish passage 31 16 13 71
Fish stocking and control 67 18 1 81
Wildlife propagation and control 14 29 7 64
l~ild1ife protection at canals 8 12 0 88
Table 2. Bargaining Fi ndi ngs by Cl ass of Improvement Measure

The individual measures included in the lower acceptance rate concern
minimum flows, fluctuation control, maximum flows, current deflectors, check
dam, and artificial meanders. The first two measures accounted for 82 of the
90 requests and share similar characteristics. They constrain the maximization
of other project objects such as hydroelectric power or irrigation by either
requesting a minimum amount of water be continuously released through the dam
or by requesting 1 imi ts to daily fl uctuations in flow.
Within the category of fish propagation, fish hatcheries and nursery and
rearing ponds are responsible for the majority of recommendations which enjoy
a high rate of acceptance. Even though the cost involved in constructing and
maintaining them may be substantial, these measures were almost unanimously
accepted, because they greatly enhance the value of a stream fishery as well as
being extremely visible and pleasing to the public.

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