US Army Corps of Engineers

McNary Dam & Lake Wallula

October 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 87.50 80.20 75.50 0.00 339.28 339.37 265.43 73.94
2 79.20 79.10 72.60 1.80 339.32 339.39 265.54 73.85
3 89.40 92.70 88.00 0.00 339.19 339.43 265.83 73.60
4 70.20 70.50 65.80 0.00 339.15 339.10 265.48 73.62
5 86.80 85.90 79.10 2.10 339.16 339.30 265.68 73.62
6 88.40 89.20 84.50 0.00 339.17 339.39 265.82 73.57
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TOT           
AVG    83.58 82.93 77.58 0.65 339.21 339.33 265.63 73.70
MAX    89.40 92.70 88.00 2.10 339.32 339.43 265.83 73.94
MIN    70.20 70.50 65.80 0.00 339.15 339.10 265.43 73.57