US Army Corps of Engineers

Wanapum Dam & Lake

September 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 12502 521 18 110.20 102.10 86.70 13.40 571.28 570.89 490.32 80.57
2 13603 567 18 82.50 102.00 96.30 3.70 568.60 569.05 490.06 78.99
3 11013 459 18 82.60 81.00 77.60 1.50 568.82 568.25 488.99 79.26
4 9189 383 18 64.00 68.00 64.70 1.30 568.26 567.73 488.69 79.04
5 6721 280 20 53.70 50.50 47.40 1.10 568.71 567.17 487.80 79.37
6 8617 359 19 57.30 64.50 61.20 1.30 567.71 567.82 488.51 79.31
7 9802 408 19 76.70 73.50 70.30 1.20 568.16 567.44 488.83 78.61
8 10417 434 20 60.70 78.50 75.70 0.80 565.65 566.24 488.57 77.67
9 8656 361 21 53.40 66.00 63.90 0.10 563.85 563.61 487.41 76.20
10 6329 264 20 59.50 49.20 47.20 0.00 565.32 563.17 487.32 75.85
11 7559 315 19 57.70 58.20 56.00 0.20 565.24 564.58 488.14 76.44
12 5917 247 20 61.90 44.90 42.40 0.50 567.64 565.49 487.47 78.02
13 8845 369 20 52.10 67.10 64.40 0.70 565.54 565.88 488.11 77.77
14 7296 304 19 54.20 55.30 52.90 0.40 565.38 565.15 487.53 77.62
15 7557 315 19 63.60 56.80 54.00 0.70 566.35 566.14 487.77 78.37
16 8662 361 18 75.50 65.00 62.10 0.90 567.83 566.52 488.20 78.32
17 8983 374 17 70.30 67.20 64.10 1.10 568.27 567.04 488.40 78.64
18 7385 308 18 52.40 55.50 52.50 1.00 567.84 566.97 488.21 78.76
19 6692 279 17 42.10 50.30 47.30 1.00 566.70 566.84 487.74 79.10
20 64.20 56.20 53.30 1.00 567.81 566.86 488.05 78.81
21 66.30 61.20 58.10 1.10 568.52 567.12 488.33 78.79
22 74.40 61.90 58.20 1.70 570.25 568.22 488.72 79.50
23 78.00 82.30 75.20 5.20 569.66 568.89 489.61 79.28
24 79.10 85.70 82.30 1.30 568.75 567.89 489.25 78.64
25 61.00 67.30 64.00 1.20 567.88 567.52 488.46 79.06
26 56.60 66.10 63.00 1.10 566.55 567.22 488.42 78.80
27
28
29
30
TOT165745  358        
AVG 8723 363 19 65.77 66.78 63.11 1.67 567.56 566.91 488.42 78.49
MAX 13603   110.20 102.10 96.30 13.40 571.28 570.89 490.32 80.57
MIN 5917   42.10 44.90 42.40 0.00 563.85 563.17 487.32 75.85