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<br />. 7 ~.. <br />1 I.;J <br /> <br />. <br /> <br />C. Project Diversions <br /> <br />The water year 1986 outlook used a Project diversion of <br />3,000 acre-feet for the most probable runoff condition. The March 1, <br />April 1, and May 1 forecasts, based on Soi 1 Conservation Service snow <br />course data, projected available diversions of 72,600 acre-feet, <br />69,000 acre-feet, and 65,200 acre-feet, respectively. Due to restricted <br />space in the East Slope storage system, only the Twin Lakes Reservoir <br />and Canal Company exchange water was expected to be imported. It was <br />also assumed that the storage of winter water would not allow replace- <br />ment space for reservoir evaporation. However, project imports were <br />allowed in sufficient quantities to replace reservoir evaporation. <br /> <br />The actual diversion from May through September was 30,270 acre-feet as <br />measured at the outlet portal of Boustead Tunnel. The maximum mean <br />daily import through Boustead Tunnel was 742 cubic feet per second on <br />June 6, 1986. A senior call was not made on the Colorado River during <br />1986; therefore, no releases from Ruedi Reservoir were necessary to <br />replace Project diversions. <br /> <br />The yearly total imports, the water used for Twin Lakes Reservoir and <br />Canal Company exchange, and the accumu 1 ated imports to the Ark ans as <br />River are shown on table 3. The 15 years of accumulated imports total <br />740,100 acre-feet for an average of 49,340 acre-feet per year. A plot <br />of the Boustead Tunnel imports durin9 water year 1986 is shown on <br />exhibit 5. <br /> <br />. <br /> <br />The discharge records for all diversions in water year 1986 are shown in <br />appendi x A. <br /> <br />D. Twin Lakes Exchange <br /> <br />On October 1, the Twin Lakes Reservoir and Canal Company (Company) <br />be9an bypassing water into the Roaring Fprk River drainage in exchange <br />for water in Twin Lakes. The exchange followed the operating criteria <br />as shown in appendix B. The total amount of the exchange at Twin Lakes <br />was 1545.43 acre-feet. The Company'S 'account in Twin Lakes was at <br />maximum storage during late June and early July and few demands the rest <br />of the runoff season allowed greater than required flows to be bypassed <br />at Lincoln Creek and the Roaring Fork River. When these conditions of <br />additional bypass exist, the Company does not receive credit for water <br />being bypassed into the Roaring Fork System. The monthly summary of the <br />exchange is also shown in appendix B along with plots of the daily <br />flows. <br /> <br />E. Turquoise Lake <br /> <br />On September 30, 1985, 125,140 acre-feet of water were in storage <br />in Turquoise Lake. Homestake Project refilled their storage to approxi- <br />mately 29,000 acre-feet by importing approximately 16,450 acre-feet <br /> <br />. <br /> <br />6 <br />