US Army Corps of Engineers

Wanapum Dam & Lake

October 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 9998 417 18 66.90 74.40 71.40 1.00 566.51 566.77 488.32 78.45
2 8024 334 18 61.10 60.30 57.60 0.60 566.63 565.84 487.44 78.40
3 6493 271 19 61.80 49.20 46.20 1.00 568.40 566.86 487.07 79.79
4 10479 437 17 65.60 77.50 74.40 1.10 566.74 567.43 488.54 78.89
5 10097 421 18 83.20 74.70 71.50 1.20 567.93 567.57 488.28 79.29
6 8663 361 17 60.00 64.50 61.80 0.80 567.30 566.39 487.79 78.60
7 9387 391 18 60.00 71.90 69.30 0.60 565.63 565.69 488.53 77.16
8 11096 462 18 91.50 83.00 80.10 0.90 566.83 567.10 489.08 78.02
9 6214 259 18 34.80 47.20 44.80 0.40 565.08 565.00 487.02 77.98
10 3696 154 18 49.10 28.30 25.50 0.70 568.01 566.07 485.14 80.93
11 9085 379 18 63.90 67.30 64.20 1.10 567.54 567.05 487.46 79.59
12 9413 392 18 93.50 68.60 65.10 1.50 570.98 568.60 487.63 80.97
13 83.00 88.70 82.20 4.50 570.20 570.11 490.00 80.11
14 53.80 63.00 59.40 1.60 568.94 569.52 488.34 81.18
15 67.20 68.10 64.50 1.60 568.82 568.76 487.17 81.59
16 55.40 60.60 57.20 1.40 568.10 568.16 486.89 81.27
17 71.30 56.40 52.90 1.50 570.16 568.40 486.57 81.83
18 43.70 56.50 53.10 1.50 568.39 568.20 486.44 81.76
19 76.50 77.60 56.60 19.10 568.23 567.63 487.53 80.10
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TOT102645  215        
AVG 8554 356 18 65.38 65.15 60.94 2.22 567.92 567.43 487.64 79.78
MAX 11096   93.50 88.70 82.20 19.10 570.98 570.11 490.00 81.83
MIN 3696   34.80 28.30 25.50 0.40 565.08 565.00 485.14 77.16