US Army Corps of Engineers

Wanapum 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 9067 378 21 81.80 64.10 62.60 0.00 570.32 568.24 487.26 80.98
2 9216 384 21 57.50 76.80 64.20 10.60 567.66 567.85 487.71 80.14
3 8943 373 21 69.80 71.00 62.30 6.70 567.50 567.44 487.53 79.91
4 7506 313 21 56.00 64.20 52.60 9.60 566.35 566.43 486.97 79.46
5 9329 389 21 77.70 68.40 66.40 0.00 567.65 566.11 487.46 78.65
6 11087 462 21 70.20 80.70 78.70 0.00 566.18 567.25 488.17 79.08
7 8171 340 21 66.80 60.70 58.70 0.00 567.03 565.96 487.55 78.41
8 9082 378 22 75.30 72.70 63.20 7.50 567.39 567.79 487.13 80.66
9 72.50 62.40 60.40 0.00 568.80 566.89 487.71 79.18
10 65.00 73.30 64.20 7.10 567.65 568.52 487.05 81.47
11 84.70 69.70 61.30 6.40 569.73 569.28 486.89 82.39
12 75.30 73.30 71.30 0.00 570.01 569.22 488.47 80.75
13 71.10 71.30 69.30 0.00 569.99 570.27 487.72 82.55
14 80.50 84.90 82.90 0.00 569.38 569.64 489.33 80.31
15 86.90 86.40 84.40 0.00 569.45 569.31 489.21 80.10
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
TOT 72401  169        
AVG 9050 377 21 72.74 71.99 66.83 3.19 568.34 568.01 487.74 80.27
MAX 11087   86.90 86.40 84.40 10.60 570.32 570.27 489.33 82.55
MIN 7506   56.00 60.70 52.60 0.00 566.18 565.96 486.89 78.41