US Army Corps of Engineers

Wanapum Dam

Tuesday May 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 148.60 126.68 19.97 570.38 492.04 78.33
2 148.50 126.37 20.13 570.65 492.03 78.63
3 159.40 137.14 20.21 570.68 492.44 78.24
4 147.00 124.75 20.28 570.77 492.02 78.75
5 158.70 136.43 20.32 570.88 492.27 78.61
6 163.00 140.68 20.34 570.87 492.48 78.39
7 168.30 145.94 20.31 570.77 492.93 77.84
8 165.20 142.85 20.31 570.82 492.66 78.16
9 164.40 142.13 20.30 570.75 492.71 78.05
10 161.80 139.57 20.27 570.71 492.70 78.01
11 163.50 141.21 20.27 570.70 492.74 77.96
12 169.20 146.91 20.30 570.85 493.12 77.73
13 169.40 147.08 20.37 570.89 493.15 77.74
14 172.40 149.97 20.38 570.92 493.27 77.65
15 167.80 145.43 20.41 570.89 493.13 77.75
16 171.50 149.18 20.33 570.82 493.33 77.49
17 164.40 141.99 20.36 570.86 493.08 77.78
18 172.20 149.68 20.48 571.04 493.46 77.57
19 165.60 143.04 20.53 571.11 493.35 77.76
20 178.10 144.16 31.93 571.20 494.00 77.20
21 202.30 127.28 73.00 571.33 494.48 76.84
22 217.30 131.79 83.51 571.28 494.95 76.33
23 217.50 133.59 81.90 571.25 494.98 76.27
24 208.90 122.22 84.67 571.22 494.91 76.31
AVG 171.88 139.00 30.87 570.90 493.18 77.72
MAX 217.50 149.97 84.67 571.33 494.98 78.75
MIN 147.00 122.22 19.97 570.38 492.02 76.27
BUILDING STRONG®