US Army Corps of Engineers

Wanapum Dam

Wednesday November 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 99.20 96.36 0.84 565.99 488.89 77.09
2 104.30 101.44 0.83 566.01 488.84 77.17
3 92.10 89.28 0.85 566.07 488.34 77.72
4 69.30 66.47 0.85 566.02 486.95 79.06
5 66.50 63.66 0.84 565.96 486.95 79.01
6 73.00 70.13 0.84 566.02 487.46 78.56
7 73.90 71.06 0.81 565.71 487.31 78.40
8 72.20 69.40 0.84 566.66 487.17 79.49
9 69.50 66.38 1.09 567.26 486.85 80.41
10 65.90 62.76 1.17 567.24 486.84 80.40
11 82.10 78.82 1.27 567.87 487.85 80.01
12 109.70 106.39 1.34 567.71 489.49 78.22
13 121.00 117.70 1.26 567.18 490.38 76.80
14 138.50 135.42 1.10 566.81 491.25 75.56
15 111.10 108.07 1.06 566.77 490.31 76.46
16 100.80 97.76 1.01 566.42 490.23 76.19
17 112.90 110.00 0.92 566.37 490.74 75.63
18 149.00 146.07 0.91 566.26 492.62 73.64
19 155.30 152.41 0.86 565.98 492.56 73.41
20 143.90 141.11 0.83 565.92 491.95 73.97
21 149.60 146.84 0.79 565.64 492.20 73.44
22 151.40 148.63 0.73 565.36 492.27 73.09
23 158.10 155.40 0.69 565.24 492.16 73.09
24 144.80 142.20 0.64 564.88 491.69 73.19
AVG 108.92 105.99 0.93 566.31 489.64 76.67
MAX 158.10 155.40 1.34 567.87 492.62 80.41
MIN 65.90 62.76 0.64 564.88 486.84 73.09