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<br />". -~ <br /> <br />. <br /> <br />COLORADO WATER CONSERVATION BOARD <br />Department of Natural Resources <br />721 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Phone: (303) 8&&-3441 <br /> <br />MEMORANDUM <br /> <br />STATE OF COLORADO <br />f) <br /> <br />TO: <br /> <br />Members. CWCB <br />Bill McDonald <br /> <br />Roy Romer <br />Governor <br />J. William McDonald <br />Director <br />David W. Walker <br />Deputy Director <br /> <br />FROM: <br /> <br />DATE: September 13, 1988 <br /> <br />SUBJECT: Agenda Item 15a, September 22-23, 1988. Board Meeting-- <br />Authorization to Withdraw Statements of Opposition <br />Case No. l-84CW308: Parmalee & C.H. Belvin <br /> <br />,.. <br /> <br />Case Summary <br /> <br />. <br /> <br />The Board ratified a Statement of Opposition against Case <br />No. 1-84CW308 at its January 14-15. 1985. meeting. The <br />applicants have filed for water rights and approval of a plan <br />for augmentation to operate a well tributary to Fourmile Canyon <br />Creek in north Boulder. This well will serve a private school <br />with 240 students and faculty, with an annual depletion of 5.0 <br />acre-feet. <br /> <br />The Board holds two instream flow decrees on a 2-mile <br />reach of Boulder Creek which may be injured by this <br />application. One is the Berkeley Ditch right for 1 cfs. with <br />an 1862 appropriation date. The second is for 15 cfs with a <br />1973 appropriation date. <br /> <br />Despite the small size of the injury in this case, the <br />staff elected to pursue this case because of the importance of <br />the Berkeley Ditch right, which had been purchased with <br />Division of Wildlife funds. The staff have since analyzed the <br />geohydrology of the area in order to quantify the impact to <br />Boulder Creek. The Belvin well is located on a gravel terrace <br />between Boulder Creek and Fourmile Canyon Creek. It is not <br />hydraulically connected to the Boulder Creek stream system and <br />can only affect flows in Boulder Creek by affecting flows in <br />Fourmile Canyon. Maximum injury for this reach is about 1.7 <br />gpm, which is 0.4\ of the senior instream flow and,about 0.03\ <br />of the junior instream flow. At such times as flows in Boulder <br />Creek are below the 1 cfs Berkeley Ditch right, it is highly <br />unlikely that there would be any contributing flow from the <br />small Fourmile Canyon drainage. The staff has concluded that <br />the impact of this application on Boulder Creek will be <br />negligible. <br /> <br />. <br /> <br />7769E <br /> <br />- <br />