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<br />I <br />I <br />I <br />I <br />I <br />I. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Colo. Water Conservation Board <br />September 28, 1989 <br />Page 3 <br /> <br />The second water right which MCMD proposes to store in Bear Creek Lake is the <br />monthly streamflow depletion attributable to the historic irrigation use of a part of the <br />Robert LewIs Ditch. MCMD owns 223.595 inches out of the total 652.8 inches (34.25%) <br />decreed to this right, which has an appropriation date of 10-01-1865. Of this amount, <br />179.525 inches have been decreed by the Division 1 water court for use in a plan of <br />augmentation to support municipal uses in the District (Case No. 84CW221), In this <br />decree, Bear Creek Lake was also named as an alternate paint of storage for the Robert <br />Lewis water. Using an analysis of the historic diversions. crop consumptive use and return <br />flow patterns, the monthly stream depletions were calculated for the 1949-1957 study period. <br />The average annual depletion during the irrigation season (storable inflow to Bear Creek <br />Lake) and the average winter return flow obligation. each calculated in accordance with the <br />terms and conditions of the decree in 84CW221 are shown in Table B. '. <br /> <br />TABLE B <br />Cak:ulated Depletions for Robert LewIs Diidl <br />m.59S iDches/6SZ,8 Inches <br /> <br />Year <br /> <br />Irrigation Season <br />Depletions <br />(acre-feet) <br /> <br />1949 <br />1950 <br />1951 <br />1952 <br />1953 <br />1954 <br />1955 <br />1956 <br />1957 <br /> <br />242 <br />110 <br />315 <br />96 <br />247 <br />1 <br />163 <br />112 <br />315 <br /> <br />Winter <br />Return Flows <br />( acre-feet) <br /> <br />22 <br />22 <br />22 <br />22 <br />22 <br />22 <br />22 <br />22 <br />22 <br />