US Army Corps of Engineers

John Day & Lake Umatilla

December 2023

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 115.70 118.30 117.40 0.00 265.63 265.54 160.30 105.24
2 98.10 124.30 123.20 0.00 264.63 264.99 160.34 104.65
3 102.10 107.40 106.30 0.00 264.43 264.40 160.11 104.29
4 82.30 97.80 96.70 0.00 263.82 264.16 159.32 104.84
5 69.40 76.80 75.90 0.00 263.53 263.72 159.49 104.23
6 76.50 71.50 70.70 0.00 263.72 263.69 159.74 103.95
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TOT           
AVG    90.68 99.35 98.37 0.00 264.29 264.42 159.88 104.53
MAX    115.70 124.30 123.20 0.00 265.63 265.54 160.34 105.24
MIN    69.40 71.50 70.70 0.00 263.53 263.69 159.32 103.95