US Army Corps of Engineers

Lower Monumental Dam & Lake

September 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 2706 113 16 17.20 16.60 15.70 0.00 539.29 539.34 438.85 100.49
2 3640 152 16 19.70 21.20 20.40 0.00 538.86 539.19 438.88 100.31
3 3587 149 16 18.60 21.10 20.30 0.00 538.12 538.62 438.98 99.64
4 3520 147 16 22.60 21.00 20.00 0.00 538.59 538.33 438.97 99.36
5 3730 155 16 20.80 21.90 21.20 0.00 538.26 538.57 439.15 99.42
6 4416 184 16 27.70 25.80 25.00 0.00 538.82 538.44 439.06 99.38
7 3975 166 17 22.40 23.00 22.40 0.00 538.63 538.74 439.00 99.74
8 2830 118 17 17.10 17.00 16.10 0.00 538.66 538.84 438.92 99.92
9 3078 128 17 18.20 18.30 17.50 0.00 538.61 538.62 439.16 99.46
10 2546 106 16 15.10 15.20 14.40 0.00 538.61 538.82 439.18 99.64
11 2967 124 17 18.50 17.80 16.90 0.00 538.83 538.71 439.44 99.27
12 2521 105 17 15.80 15.00 14.30 0.00 539.07 538.91 439.34 99.57
13 3450 144 18 20.30 20.10 19.50 0.00 539.13 539.12 439.25 99.87
14 3499 146 18 19.70 20.60 19.80 0.00 538.88 539.02 439.09 99.93
15 2735 114 17 15.90 16.30 15.50 0.00 538.78 538.85 439.12 99.73
16 22.10 21.00 20.30 0.00 538.66 538.87 439.15 99.72
17 17.30 18.10 17.40 0.00 538.40 538.66 439.17 99.49
18 18.60 17.10 16.30 0.00 538.86 538.69 439.25 99.44
19 15.80 17.30 16.50 0.00 538.43 538.85 439.37 99.48
20 18.90 17.10 16.50 0.00 538.95 538.82 439.27 99.55
21 21.20 20.70 20.00 0.00 539.09 539.03 439.27 99.76
22 17.80 18.80 18.00 0.00 538.78 538.95 439.18 99.77
23
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25
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29
30
TOT 49199  249        
AVG 3280 137 17 19.15 19.14 18.36 0.00 538.74 538.82 439.14 99.68
MAX 4416   27.70 25.80 25.00 0.00 539.29 539.34 439.44 100.49
MIN 2521   15.10 15.00 14.30 0.00 538.12 538.33 438.85 99.27