US Army Corps of Engineers

Wanapum Dam & Lake

May 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 11811 492 19 79.40 105.60 86.10 17.50 565.62 566.61 489.69 76.92
2 10833 451 19 108.20 98.30 78.90 17.40 567.02 566.59 488.97 77.62
3 8888 370 20 92.90 83.30 63.80 17.50 568.36 566.70 488.03 78.67
4 11449 477 19 120.20 105.10 80.20 22.90 570.44 569.55 489.04 80.51
5 14308 596 18 124.10 123.20 101.10 20.10 570.56 570.45 490.92 79.53
6 13561 565 18 103.50 117.80 96.30 19.60 568.58 569.69 490.56 79.13
7 8270 345 19 89.80 81.00 58.40 20.60 569.79 568.31 488.04 80.27
8 10352 431 19 84.20 96.80 72.60 22.30 568.04 569.08 488.42 80.66
9 11466 478 19 106.80 103.00 82.60 18.40 568.57 568.07 489.19 78.88
10 16637 693 19 153.00 141.70 120.20 19.50 570.14 569.57 491.57 78.00
11 18580 774 18 151.60 156.40 134.80 19.60 569.48 569.77 492.25 77.52
12 18203 758 18 158.70 154.40 133.10 19.30 570.08 569.36 492.14 77.22
13 19124 797 18 173.80 164.50 138.10 24.40 571.35 570.85 492.75 78.10
14 18452 769 18 170.30 170.70 132.90 35.80 571.30 571.18 493.24 77.94
15 18343 764 18 158.80 163.10 132.40 28.60 570.72 570.81 493.01 77.80
16 17437 727 18 142.00 147.00 124.60 20.40 570.04 570.85 492.29 78.56
17 15253 636 19 146.50 137.90 107.60 28.30 571.21 570.49 490.76 79.73
18 14835 618 19 153.00 153.70 105.30 46.40 571.12 570.89 491.67 79.22
19 15428 643 19 153.40 153.20 109.90 41.30 571.15 570.92 492.02 78.90
20 18712 780 18 165.00 167.50 135.50 29.90 570.81 570.96 493.05 77.91
21 169.10 167.50 138.50 27.10 571.03 570.99 493.23 77.76
22 168.00 168.70 143.60 23.10 570.94 571.05 493.44 77.61
23 168.80 167.90 124.80 41.10 571.06 571.06 493.18 77.88
24 176.00 176.30 120.20 54.10 571.02 571.11 493.34 77.77
25 182.80 183.60 122.90 58.70 570.91 571.05 493.73 77.32
26 184.40 183.20 137.00 44.20 571.08 571.18 493.99 77.19
27 172.70 172.90 136.10 34.80 571.05 571.04 493.55 77.49
28
29
30
31
TOT291942  372        
AVG 14597 608 19 142.85 142.38 111.76 28.63 570.05 569.93 491.56 78.37
MAX 19124   184.40 183.60 143.60 58.70 571.35 571.18 493.99 80.66
MIN 8270   79.40 81.00 58.40 17.40 565.62 566.59 488.03 76.92