US Army Corps of Engineers

John Day & Lake Umatilla

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 75.20 72.60 70.60 0.90 265.33 265.24 159.24 106.00
2 80.20 74.90 72.90 0.90 265.53 265.43 159.46 105.97
3 92.30 89.70 87.50 0.90 265.63 265.51 159.62 105.89
4 64.50 69.70 67.60 0.90 265.43 265.46 159.72 105.74
5 85.20 82.50 80.50 0.80 265.53 265.44 160.07 105.37
6 88.40 88.40 86.40 0.80 265.53 265.50 159.68 105.82
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TOT           
AVG    80.97 79.63 77.58 0.87 265.50 265.43 159.63 105.80
MAX    92.30 89.70 87.50 0.90 265.63 265.51 160.07 106.00
MIN    64.50 69.70 67.60 0.80 265.33 265.24 159.24 105.37