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I I I I I I I I I I I I I I I I I I I ==============~========================================================================== ESTIMATED UI/IT COST UNRESTRICTED FIRM ANNUAL TOTAL UN IT COST FI RI~ AnIlUAl STORAGE CAPACITY YIELD PROJECT OF STORAGE VI ElD PROJECT (Acre-Feet) (Acre-Feet) COST ($ ) ($ Ac -Ft) ($ Ac-Ft) Comanche Dam 2,629 1,770 1,724,286 656 974 Peterson lake Dam 1,252 1,010 756,312 604 749 Twin lakes Dam 460 454 824,425 1,792 1,816 ========================================================================================= An alternative to rehabllftatlng Peterson lake Dam would be to purchase CBT water at approximately $1,070 per acre-foot of yield. Since this water can only be delivered In the sumner, when CBT facilities are operating, this source of water Is not comparable, as Peterson lake Dam will allow releases throughout the year. Another alternative Is to construct Rockwell Dam on the South Fork of the Cache la Poudre RI ver and trans fer the wa ter rI ghts from Peterson lake Reservoir. The estimated cost of storage at Rockwell ranges from $2,636 per acre-foot for a 5,000 acre-feet reservoir to $1,363 per acre-foot for a 17,000 acre-feet reservoir. These costs do not compare favorably with $749 per acre-foot for firm annual yield and $604 per acre-foot of storage obtained by rehabilitating Peterson lake Dam. Restoring Peterson lake Reservoir to full unrestricted operation would not only provide a firm dependable water supply to Greeley, but also would provide carry-over storage to maintain a fishery and Increase recreational potent Ia I. 50 percent of the project cost could be construction fund. If approved, the CWCB will City will repay the loan over 40 years at a five fInanced through the loan the City $378,156. percent Interest rate. CWCB The x