US Army Corps of Engineers

Wanapum Dam

Monday June 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 153.10 130.60 20.47 571.08 492.88 78.20
2 158.70 136.15 20.50 571.11 493.04 78.07
3 173.40 136.22 35.18 571.24 493.90 77.33
4 189.90 148.26 39.68 571.18 494.21 76.97
5 184.20 142.56 39.64 571.04 494.18 76.87
6 184.30 142.73 39.60 571.00 494.19 76.81
7 172.80 130.31 40.46 571.02 493.54 77.48
8 179.30 126.34 50.95 570.99 493.77 77.22
9 180.00 127.21 50.84 570.96 493.77 77.18
10 176.80 128.01 46.84 570.81 493.67 77.13
11 163.50 129.58 31.89 570.68 493.05 77.63
12 152.30 130.16 20.18 570.44 492.78 77.66
13 153.30 131.43 19.89 569.98 492.90 77.08
14 158.40 136.58 19.83 570.14 493.08 77.05
15 170.40 148.48 19.90 570.13 493.46 76.67
16 165.80 143.91 19.87 570.08 493.29 76.79
17 166.70 144.84 19.89 570.15 493.32 76.83
18 168.20 146.34 19.89 570.26 493.35 76.91
19 156.60 134.68 19.97 570.30 492.97 77.33
20 165.10 143.12 20.03 570.45 493.25 77.20
21 170.40 148.28 20.14 570.66 493.42 77.24
22 163.70 141.40 20.26 570.78 493.20 77.58
23 164.90 142.54 20.36 570.93 493.25 77.68
24 165.70 143.20 20.46 571.08 493.47 77.61
AVG 168.23 138.04 28.20 570.69 493.41 77.27
MAX 189.90 148.48 50.95 571.24 494.21 78.20
MIN 152.30 126.34 19.83 569.98 492.78 76.67