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Last modified
8/11/2009 11:32:55 AM
Creation date
8/10/2009 12:31:31 PM
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Template:
UCREFRP
UCREFRP Catalog Number
7041
Author
Upper Colorado River Commission.
Title
Forty-Third Annual Report of the Upper Colorado River Commission
USFW Year
1991.
USFW - Doc Type
Colorado River Storage Project and Participating Projects.
Copyright Material
NO
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<br />During 1991, flows of over 4,000 cfs were experienced in the Black <br />Canyon as inflows of over 8,000 cfs occurred. To protect the blue ribbon <br />trout fishery in the Black Canyon, releases were carefully planned to <br />minimize large fluctuations in the daily and monthly flows. This was <br />accomplished with only minimal amounts of water bypassing the <br />powerplants at Blue Mesa and Morrow Point. <br /> <br />By December of 1992, Blue Mesa Reservoir will be drawn down to at <br />least an elevation of7,495.0 feet in order to minimize icing problems in <br />the Gunnison River. Blue Mesa will continue to be drawn down through <br />April of 1992 to a level that will accommodate the most probable inflow <br />scenario and accomplish the release objectives with a minimum of power <br />plant bypasses. <br /> <br />Under all but the most adverse inflow scenarios, Blue Mesa is expected <br />to fill in the summer of 1992. The filling of the reservoir next year will <br />insure that reasonable specific releases required to study the protection <br />and improvement of habitat for endangered fish can be accommodated. <br />The forecasted runoff during the spring of 1992 will be constantly <br />monitored to achieve these objectives. <br /> <br />I. FISH AND WILDLIFE <br /> <br />The Colorado River Endangered Fishes Recovery Program is in its <br />fourth year of implementation. Approximately 35 projects have been <br />funded for Fiscal Year 1992, totaling almost $2.97 million. Two <br />additional projects were funded under the Drought Assistance Program <br />administered by Reclamation. These two projects are designed to develop <br />refuge ponds on the Green and Colorado Rivers that can be used during <br />drought or low flow conditions, offering protection for the endangered <br />fish of the Colorado River System during these adverse conditions. <br />Research activities initiated in 1991, including the investigation of <br />chemical cues believed to be important in the migration and spawning of <br />several endangered species and the taxonomic status of the three species <br />of chub, will continue in fiscal year 1992. Activities in the area of genetics <br />and propagation of the various stock of Colorado squawfish and razorback <br />sucker also continue to be a high priority. These activities remain the most <br />important in future recovery activities in the Upper Colorado Basin. <br /> <br />The Service is expecting to issue a draft opinion on the operation of <br />Flaming Gorge Dam early in January of 1992. The opinion is expected <br /> <br />61 <br />
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