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I 1 I I I I I I 1 I I I I I 1 I I I I I ==~============================================================================ Table IV.5. Current Operating Restrictions Name of Reservoir Date of Restriction I I Nature of Restrictionl I I Zero storage I I Twi n Lakes January 22, 1986 =============================================================================== Twin Lakes Reservoir is required to remain empty until the outlet works are repaired or replaced, and seepage problems are corrected. The current spillway crest elevation at gage height 19.1 ft. does not allow operation at the decreed gage height of 20.0 feet. The Cache la Poudre River Water Commissioner administers all of Greeley's high mountain reservoirs as alternate points of diversion. This means each reservoir is allowed to fill to its limit for the purpose of obtaining its appropriation at its own damsite, or one of the other sites. This process has not been formalized through the water courts, but objections should be minimal because all of the stream diversions are downstream near the mouth of the canyon, and the river system has historically been operated in this manner; Water ri ght transfers may be possi bl e if it is desi rabl e to enl arge ei ther Comanche Reservoi r or Peterson Lake Reservoi r, rather than rehabi 1 itate Twi n lakes. The water right most likely would not be diminished as a result of a transfer. The decision to transfer the right should be based upon the feasibility of rehabilitating the existing structure and the firm yield attainable from the storable water supplies at this dam site, when compared to the feasibility of enlarging an alternate point of storage and the firm yield attained from transferring the Twin Lakes storage decree. 3.0 WATER SUPPLY The water suppl i es for along with Twin Lakes. Comanche and Peterson Lake Reservoirs were evaluated Both Comanche and Peterson lake Dams can be enl arged -26-