US Army Corps of Engineers

Wanapum Dam & Lake

September 2020

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 12865 536 23 94.90 94.40 90.10 2.30 570.64 570.93 490.09 80.84
2 10808 450 23 67.80 78.60 74.80 1.80 569.16 569.30 488.74 80.56
3 9896 412 22 73.60 72.90 69.20 1.70 569.26 569.07 488.41 80.66
4 10580 441 22 82.20 78.30 74.50 1.80 569.79 569.31 488.91 80.40
5 10781 449 22 82.60 79.30 75.30 2.00 570.24 569.88 489.46 80.42
6 10993 458 22 81.30 80.80 76.70 2.10 570.31 570.16 489.55 80.61
7 10864 453 22 81.60 79.30 75.10 2.20 570.63 570.58 489.61 80.97
8 11111 463 20 73.70 82.10 78.20 1.90 569.48 569.49 489.39 80.10
9 11851 494 20 91.60 87.40 83.40 2.00 570.06 569.82 489.43 80.39
10 12702 529 20 95.80 93.80 89.70 2.00 570.34 570.01 489.77 80.24
11 12983 541 21 99.60 95.70 91.50 2.20 570.88 570.42 490.11 80.31
12 13097 546 20 82.80 96.40 92.70 1.80 569.00 569.21 489.85 79.36
13 10563 440 20 62.10 78.40 75.10 1.30 566.73 567.76 488.74 79.02
14 10814 451 20 77.40 81.80 79.10 0.70 566.11 565.97 488.70 77.27
15 78.40 66.80 64.00 0.80 567.73 566.28 487.92 78.36
16 95.00 87.40 84.00 1.40 568.79 568.02 489.38 78.64
17 85.90 95.00 91.80 1.20 567.52 567.49 489.77 77.72
18 71.00 85.30 82.80 0.50 565.51 565.44 488.98 76.46
19 46.40 48.60 46.20 0.40 565.20 565.00 486.82 78.18
20 60.70 53.10 50.30 0.70 566.28 566.05 486.86 79.19
21 62.60 69.10 66.50 0.60 565.35 565.69 488.60 77.09
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TOT159908  297        
AVG 11422 476 21 78.43 80.21 76.71 1.50 568.52 568.38 489.00 79.37
MAX 13097   99.60 96.40 92.70 2.30 570.88 570.93 490.11 80.97
MIN 9896   46.40 48.60 46.20 0.40 565.20 565.00 486.82 76.46