US Army Corps of Engineers

McNary Dam & Lake Wallula

April 2020

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 135.10 138.80 133.00 1.10 338.31 338.24 265.50 72.74
2 129.80 132.30 124.70 2.90 338.20 338.17 265.42 72.75
3 117.70 98.60 93.90 0.00 339.23 338.65 264.70 73.95
4 112.80 115.60 109.20 1.70 339.10 339.14 264.72 74.42
5 119.70 125.10 117.10 3.30 338.81 339.09 264.89 74.20
6 117.10 107.50 101.30 1.60 339.27 339.09 264.58 74.51
7 114.40 117.60 111.00 1.90 339.14 339.44 265.17 74.27
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TOT           
AVG    120.94 119.36 112.89 1.79 338.87 338.83 265.00 73.83
MAX    135.10 138.80 133.00 3.30 339.27 339.44 265.50 74.51
MIN    112.80 98.60 93.90 0.00 338.20 338.17 264.58 72.74