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<br />Navajo Reservoir <br /> <br />12 <br /> <br /> <br />During water year 1978 Navajo Reservoir <br />was kept within the limits specified by the <br />Bureau of Reclamation in its interim <br />operating rules, The Reservoir water sur- <br />face was lowered to elevation 6022 feet <br />during the winter of 1977 and spring of <br />1978, The actual April-July inflow to Navajo <br />Reservoir was 526,000 acre-feet or 72 <br />percent of the longtime April through July <br />runoff average, <br /> <br />Navajo Reservoir is operated under a <br />normal flood control plan, On March 1, <br />1976, Navajo Reservoir had 935,000 acre- <br />feet of water storage, The April-July inflow <br />forecast on March 1 was 700,000 acre-feet. <br />Based on the March 1 forecast the current <br />flood control rules allowed the Reservoir to <br />be full and the scheduled operation oi the <br />Reservoir did not. include any releases <br />specifically for flood control. (Chart 6,) <br /> <br />STATISTICS <br />AcTIVE STORAGE' <br />RESERVOIR <br /> <br />(ACRe <br />FeET I <br /> <br />ELEVATION <br />!FEETl <br /> <br />Releases were scheduled to conserve water <br />in storage while providing for minimum <br />downstream flows at pOints of diversion for <br />consumptive use and for maintenance of <br />fish and wildlife resources, <br /> <br />MAXIMUM STORAGE 1,696,400 6085 <br />INACTIVE STORAGE 660,500 5990 <br />SuHFACE A.REA IFlJLL) 1'::>.610 ACRES <br />RESERVOIR LENGTH <br />IFULLI 3JMILES <br /> <br />'does nor Include 72,600 .ere reer of dedd JlOrage <br />belowelev.Jrion 5775 lel'l[ <br /> <br />OUTFLOW <br /> <br /> 4 <br /> 3 <br /> 2 <br /> , <br />C 0 <br />z 4 <br />0 <br />u <br />. 3 <br />. <br />i> 2 <br />. <br />. <br />. <br />u <br />. 0 <br />0 <br />u 4 <br />~ 3 <br />~ 2 <br />. <br />< <br />. <br />" <br />. 0 <br />" <br /> 4 <br /> 3 <br /> 2 <br /> 0 <br /> <br />UPPER QUARTILE <br /> <br /> wa ~ <br /> I , <br /> > ,,;-. <br /> " JIPD . <T.~ .: <br /> AVERAGE <br /> ",.,. " " '~. <br />"..", ... ,'~ , '%$ . .' ", .. <br /> LOWER OUARTlLE <br /> .. <br /> MOST ADVERSE <br /> . <br /> " " ..... , <br /> <br />~ > ~ Z m OC ~ ~ z <br />g ~ 0 ~ ~ ~ ~ ~ ~ <br /> <br />WOlter Yen 1978 <br /> <br />~g~ti~~~ <br />~ <i <fl 0 Z 0 . <br /> <br />~~~~~~g~ <br />l.L ::: ~ ~ ;: ~ <{ Vl <br />WOller Ye..' 1979 <br />