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Surface Area = 8.53*(Capacity)^0.31 <br />The reservoir stores water from Middle Hunt Creek and also stores water imported from <br />tributaries of South Hunt Creek, via the Allen Basin Supply Ditch (WDID 580506). This <br />supply canal, although large in decreed capacity at 60 cfs, diverts relatively small <br />quantities of water during the spring runoff, prior to the more senior rights on the streams <br />calling for water. <br />Storage water in Allen Basin Reservoir is used to provide supplemental irrigation <br />supplies to several direct flow ditch structures in the Hunt Creek drainage. Using <br />information provided by the water commissioner, those users and ditch structures were <br />identified as follows: <br />Storage Allocation <br />Ditch Structure Structure ID (acre-feet) <br />Bull Creek Ditch 580566 179 <br />Collins Ditch 580591 593 <br />Lateral A Ditch 580730 333 <br />Mill Creek Ditch 5 81085 582 <br />Simon Ditch 580863 287 <br />Misc. small structures N/A 276 <br />TOTAL 2,250 <br />2.12. Lake Catamount <br />Lake Catamount Reservoir (WDID 583631) is located on the main stem of the Yampa <br />River, between Stagecoach Dam and Steamboat Springs. The reservoir is used primarily <br />for recreational uses for the planned residential and ski development near the lake. <br />Elevation-area-capacity data was obtained from the original design plans and verified <br />with the division engineer. From this information, it was determined that the maximum <br />(and active) storage capacity of the reservoir is about 7,422 acre-feet. The division <br />engineer also provided a regression equation relating the reservoir surface area to the <br />storage capacity: <br />Surface Area = 2.47*(Capacity)^0.60 <br />According to the State's tabulation of water rights, Lake Catamount holds the following <br />storage water rights: <br />Adjudication Appropriation Administration <br />WDID Date Date No. Amount (acre-feet) <br />583631 12-31-1972 07-20-1972 44761.00000 7,800 <br />12-31-1991 09-01-1978 51134.46995 4,000 <br />Note that the first storage right is in excess of the actual reported capacity of the <br />reservoir. The second right is decreed as a refill right. <br />Yampa River Basin Information 2-16 <br />