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<br />. <br />do <br /> <br />"" <br /> <br />e <br /> <br />e <br /> <br />e <br /> <br />COLORADO WATER CONSERVATION BOARD <br />Department of Natural Resources <br />721 State Centennial Building <br />1313 Sherman Street <br />Denve'r. Colorado 80203 <br />Phone: (303) 866-3441 <br /> <br />STATE OF COLORADO <br />~ <br /> <br />MEMORANDUM <br /> <br />RoV Rome! <br />Governor <br /> <br />TO: <br /> <br />Members, CWCB <br /> <br />DavidW.Walker <br />Director <br /> <br />FROM: Dan Merriman <br /> <br />DATE: November 1, 1991 <br /> <br />SUBJECT: Agenda Item 19a, November 14-15, 1991, Board Meeting-- <br />Instream Flow Program: Staff Actions <br />Case No. 4-91CW081; San Juan Ranch Estates <br /> <br />Application Summary <br /> <br />The applicant requests approval of a modification of plan for augmentation on the <br />Lake Fork Gunnison River near the town of Lake City in Hinsdale County (see attached <br />map). The applicant proposes to modify its original plan for augmentation in order to <br />augment for depletions from one or more replacement wells within the San Juan Ranch <br />Estates subdivision. The applicant has experienced difficulty with water quality and flow <br />rates from its existing wells and therefore seeks to add replacement wells. The replacement <br />wells will not cause any increase in the consumptive use of water, any change in the time, <br />place, or manner of use of water, nor any change in the place or time of return flows. <br /> <br />CWCB Appropriation <br /> <br />The Board holds an instream flow decree on the Lake Fork Gunnison River for 45 <br />cfs, summer, and 20 cfs, winter, with an appropriation date of March 17, 1980, which could <br />be injured by this application. <br /> <br />Potential for Injury <br /> <br />The applicant's addition of one or more replacement wells within the subdivision <br />could injure the Board's rights if such wells are located upstream of the augmentation <br />reservoir decreed in the original plan for augmentation. The maximum injury which could <br />be expected to occur as a result of this application has been calculated at 0.055 cfs, which <br />represents approximately 0.28 percent of the Board's instream flow during the winter <br />months. Up to this point in time, there have been no other de minimis impacts on the Lake <br />Fork Gunnison River. The staff has not filed a statement of opposition in this case in <br />accordance with Board procedures regarding de minimis injuries. <br />