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1 <br />'• Saae Creek <br />Pond 012 will supply water to the mine for non-potable uses. It will be used as an <br />alternate point of storage for the Sage Creek Reservoir water right and an alternate point of <br />diversion for the Bates Ditch water right. Storage under the Sage Creek Reservoir water right <br />' will be limited to 45.5 acre-feet annually (40.0 acre-feet for industrial purposes and 5.5 acre- <br />feetfor evaporation-. Diversions into storage under the Bates Ditch water right will be limited <br />to 1.0 cfs from June 8 through July 18 (historical diversion period) and to 12.3 acre-feet <br />' annually. <br />The Yoast Mine Shop Well will cause depletions to Sage Creek at the rate of 8.65 <br />' percent of the annual pumpage. If the well produces 41 acre-feet in a given year, the <br />depletion to Sage Creek would be about 3.5 acre-feet annually. In order to replace out-of- <br />priority depletions to Sage Creek during the irrigation season, Pond 012 will retain 1.8 acre- <br />, feet of water in storage for release to Sage Creek. <br />' Grassv Creek <br />Pond 010 will be an alternate point of storage for the Sage Creek Reservoir water right <br />' and use of such water will be limited to 45.5 acre-feet annually for industrial purposes, <br />evaporation and maintenance of storage reservoirs. The use of the Sage Creek Reservoir <br />storage right will be limited to the non-irrigation season and to periods during the irrigation <br />season when water is flowing past the Sage Creek Ditch to the Yampa River. During other <br />times, water will be stored in Pond 010 under it's own water right or it's out-of-priority <br />storage of water will be replaced by storage releases from SCC's Wadge Pit Reservoir or by <br />contract releases from Stagecoach Reservoir. <br />Wadge Pit Reservoir is located on a tributary of Grassy Creek as shown on Plate 1. <br />' It was decreed for industrial and other purposes in 1977 with a capacity of 270 acre-feet. <br />SCC also has a contract with the Upper Yampa Water Conservancy District for 100 acre-feet <br />of water stored in Stagecoach Reservoir, which is located on the Yampa River about 14 miles <br />south of Steamboat Springs. The water will be released from Stagecoach Reservoir to replace <br />depletions to the Yampa River caused by water uses at the Yoast Mine and the Seneca II-W <br />Mine. <br />1 Terms and Conditions <br />The plan for augmentation will allow SCC to develop ayear-round water supply for <br />domestic and industrial purposes at the Yoast Mine. The following terms and conditions are <br />recommended so that other existing water uses are not adversely impacted. <br />' 1 . An accumulating flow meter should be installed on the Yoast Mine Shop Well and on <br />the discharge line from the well to Pond 010. Well pumpage should be recorded <br />monthly and deliveries to Pond 010 should be recorded weekly or as directed by the <br />Water Commissioner. Volumes of water used from Pond 010 and Pond 012 should <br />be measured and recorded weekly. The well pumping capacity will be limited to a rate <br />of 35 gpm. <br />' 9 <br />