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<br /> <br /> Maximum 1984-93 1993 Average 1984-93 <br /> Diversion (at)' (al) (al) <br /> Twin Lakes Tunnel 62,664 62,664 35.211 <br /> Busk-Ivanhoe Tunnel 9.760 4,980 5,419 <br />N Columbine Dilch 3,100 2.478 1,695 <br />U\ <br />00 Ewing Ditch 2,580 1,622 1,185 <br /><.v Wurtz Ditch 5.730 4,031 2,874 . <br /> Hoosier Pass Tunnel 12,400 11,186 10.249 <br /> Boreas Pass Dilch 334 334 59 <br /> Englewood's Moffal Tunnei 4,000 4.000 4,000 <br /> Totai 100,568 91,295 60,692 <br /> 1 Acre-feet. <br /> <br />Fryingpan-Arkansas Project-Diversions through Boustead Tunnel began in 1971. <br />The average annual diversion during the 1984-93 period was 52,021 acre-feet. The <br />maximum diversion occurred in 1984 and was 107,600 acre-feet. The operating prin- <br />ciples for the project state that diversions will not exceed 120,000 acre-feet in any year <br />and will not exceed a total aggregate of 2,352,800 acre-feet in any consecutive 34-year <br />period. The latter requirement would mean a long-term average diversion of <br />69,200 acre-feet. Since the 1984-93 average diversion has been less than this, it is <br />likely that in the coming decade or so annual diversions may be higher than <br />69,200 acre-feet (provided that water is available for diversion) to approach the <br />34-year aggregate limitation. <br /> <br />Colorado-Big Thompson Project and Windy Gap-The Colorado-Big Thompson <br />Project was completed in June 1947 and delivers water to the east slope through the <br />Alva B. Adams Tunnel. The 1965 normalized diversion rate through the tunnel was <br />285,000 acre-feet. Diversions through the Adams Tunnel averaged 234,950 acre-feet <br />between 1984 and 1993 with the maximum diversion during that 10-year period being <br />285,200 acre-feet in 1985. There has been no expansion of diversions through the <br />Alva B. Adams Tunnel. <br /> <br />Windy Gap is the newest feature of the Colorado-Big Thompson Project. Windy Gap <br />pumps water from the Fraser-Colorado River confluence up to Granby Reservoir for <br />subsequent delivery to the east slope through the Alva B. Adams Tunnel. The Windy <br />Gap Project began operation in 1987. In 1988, Windy Gap pumped 19,863 acre-feet, <br />and in 1993 it pumped 21,740 acre-feet, Operation of Windy Gap is expected to <br />increase diversions by the Colorado-Big Thompson Project by 54,000 acre-feet per year. <br />The water will be used for municipal and industrial purposes by the cities of <br />Longmont, Loveland, Estes Park, and the Platte River Power Authority. Values were <br />supplied by the Colorado Water Conservation Board in consultation with the Northern <br />Colorado Water Conservancy District. <br /> <br />Miscellaneous Exports-Miscellaneous exports by 12 small transmountain diversion <br />ditches have increased by 5,417 acre-feet since 1965. In 1965, the normalized <br />diversions from these 12 ditches were 19,880 acre-feet, and in 1990 the diversions <br />were 24,844 acre-feet. The diversions between 1984 and 1993 are summarized on the <br />following page. <br /> <br />30 <br />