US Army Corps of Engineers

John Day & Lake Umatilla

June 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 17180 716 47 258.50 258.50 93.20 164.10 265.23 265.24 161.79 103.45
2 225.20 225.20 83.90 140.30 265.23 265.09 160.99 104.10
3 228.90 231.50 87.10 143.20 265.13 265.16 161.56 103.60
4 217.60 217.70 84.30 132.20 265.13 265.26 161.13 104.13
5 212.10 222.50 85.30 135.80 264.73 264.95 160.88 104.07
6 225.40 225.40 85.40 138.70 264.73 264.69 161.00 103.69
7 220.00 230.60 87.20 142.00 264.33 264.53 161.20 103.33
8 212.70 225.50 85.90 138.30 263.82 264.07 160.94 103.13
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TOT 17180  47        
AVG 17180 716 47 225.05 229.61 86.54 141.82 264.79 264.87 161.19 103.69
MAX 17180   258.50 258.50 93.20 164.10 265.23 265.26 161.79 104.13
MIN 17180   212.10 217.70 83.90 132.20 263.82 264.07 160.88 103.13