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Last modified
7/14/2009 5:02:34 PM
Creation date
6/1/2009 11:57:49 AM
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UCREFRP
UCREFRP Catalog Number
9348
Author
Crane, H. S.
Title
Fishery Investigations of the Glen Canyon and Flaming Gorge Impoundment Areas.
USFW Year
1959.
USFW - Doc Type
\
Copyright Material
NO
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Findings: See Page 6 - Glen Canyon Report <br />See Page 34 - Flaming Gorge Report <br />Recommendations: Glen Canyon (Colorado River) <br />-4- <br />1. Research on both the limnology and fishery of Lake <br />Powell, created by the Glen Canyon Dam, should be con- <br />tinued during the period of constructing the dam and <br />subsequent impoundment of the lake. Special attention <br />should be given to the effects of impoundment on present <br />fish populations, the limnological conditions which <br />develop in the littoral areas and the extent of initial <br />productivity in the lake. <br />2. Refrain from stocking any species of forage fish in <br />the lake until the value of present species can be deter- <br />mined. Tf stocking of forage fish appears necessary, in- <br />tensive studies of requirements and habitats of poten- <br />tial forage species should be made prior to introduction. <br />3. Preliminary information indicated that areas within <br />the impoundment may be suitable for introduction of cold <br />water species. The species that should be considered <br />are: rainbow trout and kokanee salmon. <br />4. Introduction of warm water species should initially <br />be limited to largemouth bass and~or black crappie. No <br />subsequent introduction of other warm water fish should <br />be made until the success of these species in the lake <br />can be evaluated. <br />5. Studies should be undertaken to determine the extent <br />and condition of spawning areas in the reservoir ark <br />the possible methods whereby these areas may be im- <br />proved. The advisability of clearing the littoral <br />areas in the vicinity of springs and seeps in order to <br />increase the flow of water and thus improve the habi- <br />tat for kokanee salmon spawning should be seriously <br />considered. <br />6. Steps should be taken to insure adequate access roads <br />and boat launching facilities in the lake area. The <br />most likely sites for these facilities appear to be <br />present in the Wahweap Creek bay, the Bullfrog Creek <br />bay and Hite-White Canyon area. <br />Flaming Gone (Green River) <br />1. It is strongly recommended as a result of the Green <br />River investigations that a rough fish eradication pro- <br />gram be initiated on the Green River and tributary <br />streams just prior to closure of theFlaming Gorge Dam. <br />To assure a through rough fish eradication job, the <br />river and tributary streams should be chemically <br />
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