US Army Corps of Engineers

Wanapum Dam

Sunday May 31, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 165.10 143.83 19.32 569.40 492.83 76.57
2 157.90 136.41 19.45 569.71 492.64 77.07
3 152.10 130.47 19.61 569.79 492.34 77.44
4 153.90 132.25 19.61 569.80 492.52 77.27
5 149.60 127.94 19.70 570.00 492.26 77.73
6 142.00 120.13 19.82 570.22 491.52 78.70
7 122.80 100.76 20.01 570.49 491.02 79.48
8 116.40 94.15 20.23 570.84 490.45 80.39
9 107.40 85.06 20.36 570.91 490.17 80.74
10 101.20 66.19 32.99 571.00 490.18 80.81
11 115.50 73.02 40.46 570.95 490.60 80.35
12 124.80 82.17 40.59 570.89 491.05 79.84
13 140.30 97.69 40.57 570.82 491.81 79.00
14 141.40 98.88 40.48 570.86 491.87 79.00
15 147.40 104.94 40.47 570.96 492.13 78.84
16 145.10 115.54 27.58 570.95 492.30 78.65
17 147.30 124.86 20.43 570.92 492.28 78.63
18 154.50 132.16 20.33 570.71 493.20 77.51
19 167.10 144.89 20.22 570.76 493.35 77.41
20 169.70 147.50 20.22 570.52 493.32 77.20
21 159.50 137.34 20.15 570.69 493.01 77.68
22 165.40 143.08 20.28 570.83 493.18 77.65
23 164.40 142.15 20.30 570.78 493.10 77.69
24 158.90 136.59 20.36 570.93 492.98 77.95
AVG 144.57 117.42 25.15 570.57 492.09 78.48
MAX 169.70 147.50 40.59 571.00 493.35 80.81
MIN 101.20 66.19 19.32 569.40 490.17 76.57
BUILDING STRONG®