7423

• UCREFRP Catalog Number: 7423
• Author: U.S. Bureau of Reclamation.
• Title: Glen Canyon Environmental Studies Draft Report, September 1987.
• USFW Year: 1987.
• USFW - Doc Type: Washington, D.C.
• Copyright Material: NO

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would not be sufficient to replenish campsite beaches
following repeated clear-water flooding. Terrestrial
wildlife would decrease in both numbers and diversity
as the habitat upon which they depend is eliminated.
(See Appendix A, section v.)

The use period for white-water boating would be reduced
because boaters would have to avoid the extremely low
and high flows which present multiple hazards to both
boaters and equipment. Further, the quality of the
experience would be dramatically reduced following loss
of beaches, vegetation, and wildlife along the river
corridor.

In conclusion, "natural" conditions cannot be recreated
without reestablishing warm river temperatures and a
large, consistent supply of sediment.

IMPACT OF RELEASES TO MIMIC "NATURAL
CONDITIONS" WHEN COMPARED TO
CURRENT OPERATIONS

CRITICAL RESOURCES
NaTive Trou t Trout WW Terres.
Chub Fish Repro/Grow Fishing Boating Beaches Habitat
? - V - - - -

Figure VII-6. Releases to mimic "NATURAL CONDITIONS"
adversely impact most critical resources.

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