US Army Corps of Engineers

Wanapum Dam

Monday May 11, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 126.60 101.33 23.26 569.77 490.38 79.39
2 157.40 105.53 49.84 569.76 491.89 77.87
3 181.80 130.11 49.72 569.73 492.89 76.84
4 173.30 121.47 49.84 569.78 492.76 77.02
5 177.60 125.86 49.72 569.50 493.11 76.39
6 157.20 132.72 22.50 569.64 492.03 77.61
7 133.80 112.18 19.61 569.87 490.75 79.12
8 144.20 122.56 19.60 570.00 490.51 79.49
9 137.30 115.53 19.74 570.10 491.12 78.97
10 121.70 99.87 19.88 570.25 489.73 80.51
11 153.70 131.82 19.87 570.22 491.68 78.54
12 154.30 132.41 19.89 570.13 492.06 78.07
13 147.60 125.76 19.88 570.22 491.34 78.88
14 118.10 96.13 19.96 570.23 490.38 79.84
15 170.10 148.36 19.71 569.80 492.63 77.17
16 171.40 149.75 19.68 570.04 492.68 77.36
17 174.10 152.50 19.63 569.45 492.91 76.54
18 174.00 152.74 19.29 569.33 492.93 76.39
19 172.10 150.78 19.29 569.16 493.03 76.13
20 171.40 150.31 19.13 569.10 492.91 76.19
21 163.50 142.32 19.22 569.25 492.53 76.72
22 162.60 141.29 19.32 569.50 492.60 76.90
23 171.20 149.76 19.44 569.61 493.05 76.56
24 156.50 134.89 19.59 569.86 492.51 77.35
AVG 157.15 130.25 24.90 569.76 492.02 77.74
MAX 181.80 152.74 49.84 570.25 493.11 80.51
MIN 118.10 96.13 19.13 569.10 489.73 76.13