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,,, , , \ ) " PROPOSED CATLIN TRANSFER PLAN , , I' I I Ii I 0844 COLORADO WATER CONSERVATION BOARD October 16, 1974 I, I I ' , j . I I, I, :1 1. The State o~ Colorado has purchased 2,097.58 Catlin shares of a total of 18,660 shares or 11.24 percent of the total. 2. The Catlin Canal has two decrees: 248 cfs with a priority date of 12/3/1884 97 cis with a priority date of 11/14/1887 3. Historic headgate diversions of the Catlin Canal are shown in table 1. Values shown include the water released from Mt. Pisgah Reservoir and purchased from other sources. 4. Those who sold their Catlin shares were contacted, and it was determined that 2,336 acres were irrigated with the state's shares and that 2.206 acres were irrigated at least once each winter in February or March. .. i ,..1 t , . A. Irrigation season consumptive use from 2,336 acres is shown in table 2 and average 4,533 acre-feet annually or about.l.94 acre-feet per acre. Consumptive use was computed using a modified Jensen-Haise method. , II f. I B. Winter consumptive use from 2,206 acres was estimated to be 263 acre-feet annually and was estimated by applying winter lake evapora- tion to tr.e irrigated area for a two-week period. 5. The return flow used in the transfer plan is 20 percent. This is the percent recharge determined for the Catlin's Arkansas River reach by the U.S.G.S. with their digital model. r I L 6. Conveyance losses were assumed to be 0.07 percent per mile, which is the rate the state engineer presently charges on deliveries of storage water.