US Army Corps of Engineers

Wanapum Dam & Lake

May 2024

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 6947 289 18 71.80 68.60 49.30 17.40 566.74 566.48 487.69 78.79
2 8942 373 18 85.10 83.50 64.30 17.20 566.96 566.25 488.42 77.83
3 8168 340 18 70.60 77.40 58.40 17.00 566.00 566.00 487.80 78.20
4 7486 312 18 90.60 72.50 53.30 17.20 568.52 566.38 488.05 78.33
5 5604 234 18 36.20 58.50 38.60 17.90 565.39 567.18 486.29 80.89
6 5914 246 18 81.90 84.40 42.40 40.00 565.04 565.25 487.41 77.84
7 7585 316 22 70.10 75.60 57.10 16.50 564.25 565.24 487.18 78.06
8 7839 327 19 93.50 76.20 55.80 18.40 566.71 565.71 487.35 78.36
9 10175 424 19 87.00 92.70 73.40 17.30 565.91 566.33 488.62 77.71
10 9391 391 19 76.30 87.30 68.60 16.60 564.35 565.38 488.38 77.00
11 9111 380 19 105.50 84.60 65.50 17.10 567.31 566.14 488.05 78.09
12 9109 380 19 87.60 84.80 65.00 17.90 567.69 567.28 488.56 78.72
13 10778 449 17 106.50 96.50 75.30 19.10 569.09 569.11 488.80 80.31
14 12406 517 14 108.50 113.00 88.70 22.20 568.47 568.45 489.80 78.65
15 14716 613 13 137.50 129.60 104.80 22.70 569.57 569.78 490.82 78.96
16 8617 359 13 113.70 111.30 60.30 49.10 569.90 569.87 489.49 80.38
17 12639 527 12 125.60 123.50 88.50 33.00 570.18 570.26 490.39 79.87
18 14623 609 12 143.20 140.50 103.40 35.10 570.57 570.81 491.78 79.03
19 11407 475 15 126.80 141.60 80.80 58.80 568.53 569.96 491.61 78.35
20 15797 658 16 145.00 139.30 113.50 23.80 569.32 569.51 491.38 78.13
21 16372 682 15 141.70 138.50 116.80 19.70 569.75 569.87 491.26 78.61
22 15771 657 15 135.10 136.30 112.40 21.90 569.58 570.01 491.37 78.64
23 16894 704 15 143.50 142.40 120.60 19.90 569.73 570.14 491.61 78.53
24 14898 621 15 119.20 135.00 108.50 24.50 567.53 568.69 491.08 77.61
25 7809 325 16 98.80 89.60 54.80 32.80 568.81 568.81 488.42 80.39
26 9515 396 16 99.10 95.40 66.90 26.50 569.31 569.46 488.77 80.69
27 15377 641 15 136.80 131.20 109.90 19.40 570.08 569.42 491.27 78.15
28 14098 587 15 130.00 132.40 99.40 31.00 569.76 570.57 491.29 79.28
29 11051 460 15 109.90 105.20 76.70 26.50 570.39 570.43 489.44 80.99
30 16043 668 15 133.00 136.30 114.70 19.60 569.93 569.75 491.52 78.23
31 15525 647 15 131.20 139.10 118.40 18.70 568.84 568.37 491.77 76.60
TOT350607  504        
AVG 11310 471 16 107.78 107.19 80.84 24.35 568.20 568.29 489.54 78.75
MAX 16894   145.00 142.40 120.60 58.80 570.57 570.81 491.78 80.99
MIN 5604   36.20 58.50 38.60 16.50 564.25 565.24 486.29 76.60
BUILDING STRONG®