US Army Corps of Engineers

Lower Monumental Dam & Lake

April 2021

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 7937 331 18 41.10 44.80 44.20 0.00 537.97 538.36 439.10 99.26
2 9308 388 18 53.30 52.30 51.70 0.00 538.28 538.60 439.25 99.35
3 56.60 56.30 16.80 38.90 538.35 538.38 438.80 99.58
4 54.20 55.60 15.70 39.40 537.91 537.75 438.64 99.11
5 58.20 57.50 16.10 40.80 538.11 538.09 438.71 99.38
6 56.80 57.70 16.90 40.20 537.83 537.89 438.64 99.25
7 58.70 57.70 17.20 39.80 538.14 538.10 438.73 99.37
8 59.30 59.50 17.30 41.60 538.10 538.05 438.82 99.23
9 56.30 56.00 15.70 39.70 538.18 538.03 438.72 99.31
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TOT 17245  36        
AVG 8623 359 18 54.94 55.27 23.51 31.16 538.10 538.14 438.82 99.32
MAX 9308   59.30 59.50 51.70 41.60 538.35 538.60 439.25 99.58
MIN 7937   41.10 44.80 15.70 0.00 537.83 537.75 438.64 99.11