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<br />. Water Year 1975 .
<br />
<br />Navajo Reservoir
<br />
<br />
<br />STATISTICS
<br />
<br />ACTIVE STORAGE"
<br />(ACRE.fEETI ELEVATION lFEETI
<br />1,696.400 6085
<br />660,500 5990
<br />15,61QACRES
<br />J3MILES
<br />
<br />RESERVOIR
<br />MAXIMUM STORAGE
<br />INACTIVE STORAGE
<br />SURFACE AREA [FULL)
<br />RESERVOIR LENGTH (FULl)
<br />
<br />"does nor include 12,600 acre feel of dead storage below elevarlon 5775 feer
<br />
<br />OUTFLOW
<br />
<br />[I
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<br />w 2
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<br />"
<br />~ 0
<br />"
<br />HI
<br />:1
<br />
<br />During water year 1974 Navajo Reservoir was.
<br />kept within the limits specified by the Bureau of
<br />Reclamation in its interim operation rules. The
<br />reservoir was lowered to eleva tion 6,027 feet
<br />during the winter of 1973 and spring of 1974. The
<br />actual April-July inflow to Navajo. Reservoir Was
<br />271,000 acre-feet or 32 percent of the long-time
<br />April-July runoff average above Navajo.
<br />
<br />Navajo Reservoir is operated under a formal
<br />flood control plan. On March I, 1974, Navajo
<br />Reservoir had 986,000 acre-feet of storage. The
<br />April-July inflow forecast on March I was
<br />600,000 acre-feet. The wrrent flood control
<br />diagram allowed the reservoir to be full with an
<br />active storage of 1,696,400 acre-feet during the
<br />entire 1974 snowmelt runoff season based on the
<br />March I forecasts and subsequent forecasts made
<br />during the snowmelt runoff period. Therefore, the
<br />scheduled operation of the reservoir did not
<br />include any releases specifically required for flood
<br />control. (Chart 5)
<br />
<br />Releases were scheduled to control
<br />downstream flows to the minimum level practical
<br />in order to minimize bank erosion,
<br />
<br /> .,.
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<br />Wilter Year '974
<br />
<br />
<br />10
<br />
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