US Army Corps of Engineers

Wanapum Dam

Sunday May 3, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 179.20 147.17 30.07 570.51 493.51 77.00
2 175.90 143.84 30.10 570.42 493.48 76.94
3 179.60 147.59 30.05 570.36 493.65 76.71
4 178.80 146.70 30.07 570.35 493.80 76.56
5 180.70 148.53 30.14 570.59 493.71 76.88
6 182.20 149.94 30.25 570.57 493.95 76.61
7 179.10 146.80 30.27 570.62 493.85 76.78
8 179.20 135.97 41.23 570.65 493.24 77.41
9 182.10 133.49 46.57 570.88 493.20 77.69
10 162.10 119.81 40.29 571.03 492.88 78.15
11 143.30 101.07 40.19 570.68 491.71 78.96
12 114.20 81.61 30.63 570.89 490.47 80.42
13 110.30 78.09 30.23 570.76 490.53 80.23
14 106.10 73.94 30.12 570.61 490.16 80.45
15 132.80 105.05 25.73 570.46 491.33 79.13
16 156.80 134.85 19.94 570.19 492.62 77.57
17 148.50 126.72 19.83 569.74 492.51 77.22
18 155.30 133.70 19.63 569.73 492.91 76.82
19 174.30 152.66 19.68 569.99 493.23 76.76
20 172.30 150.54 19.72 569.78 493.14 76.64
21 169.70 147.97 19.71 570.14 493.12 77.02
22 174.80 152.83 19.94 570.33 493.31 77.02
23 171.20 149.21 20.02 570.44 493.16 77.28
24 174.30 146.02 26.29 570.60 493.50 77.10
AVG 161.78 131.42 28.36 570.43 492.79 77.64
MAX 182.20 152.83 46.57 571.03 493.95 80.45
MIN 106.10 73.94 19.63 569.73 490.16 76.56