Laserfiche WebLink
<br />. t <br />". <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />Mr. Wi~liam MeOonald- <br /> <br />Attach~d is copy of the computer run tnat you have discussed with Mr. Wayne <br />Cook, cureau of Reclamation. He asked me to send it and a brief explanation <br />of the assumpt~ons useo in its preparation. <br /> <br />The historical inflows 1,06 to 1979 were used as input; these correspond to <br />the years labeleO 1 through 74 on the left s~de of the page. Months <br />correspond to calendar months. The important columns to review are the <br />"Blue Mesa Storage" and "Crystal Pwrplnt Release" columns. The minimum <br />power pool storage at Blue Mesa ~s approximately 81,070 acre-feet: by <br />scanning the "Blue Mesa Storage" column for all the years, it can be seen <br />that this storage level ~s not v~olated. The releases from the Aspinal Unit <br />are shown ~n the "Crystal Pwrplnt Releases" and "Crystal Bypass" columns. <br />We used monthly minimums of 18,000 acre-feet (300 cfs) November through <br />February, transition flows of 36,000 acre-feet during March and 66,000 <br />acre~feet ouring Apr~l and October, and 78,000 acre-feet (300 cfs streamflow <br />and 1,~OO cfs tunnel flow) dur~ng the irrigation season May through September. <br />While the summer m~nimums were occas~onally implemented, the reservoir drawdown <br />created by the higher minimum flows below the tunnel seldom required minimum <br />winter releases to regain reservoir storage. <br /> <br />f.;J!!:-<<;.;::. '" , """'-, .-- '-'" <br /> <br />! <br />. . <br /> <br />- <br />--, <br /> <br />() <br />I" <br />r>:> <br />~._"') <br />00 <br /> <br /> <br />. <br />