US Army Corps of Engineers

Wanapum Dam

Wednesday May 13, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 149.20 127.83 19.41 569.54 491.99 77.56
2 143.70 122.21 19.48 569.66 491.52 78.14
3 141.80 120.48 19.32 568.93 491.49 77.44
4 123.30 102.15 19.14 569.29 491.08 78.21
5 135.30 113.99 19.33 569.60 490.96 78.65
6 103.00 81.64 19.39 569.14 490.19 78.94
7 103.10 81.63 19.43 569.57 491.15 78.42
8 148.80 127.14 19.61 569.92 492.01 77.91
9 154.10 132.31 19.80 570.12 492.41 77.71
10 150.60 128.80 19.77 569.94 491.67 78.27
11 103.10 78.09 23.02 570.32 489.78 80.53
12 148.80 106.02 40.76 570.17 491.83 78.34
13 148.30 105.46 40.86 570.44 491.91 78.53
14 157.40 123.20 32.22 570.55 492.83 77.72
15 130.50 93.57 34.93 570.37 490.72 79.65
16 119.60 82.64 34.97 570.59 490.67 79.91
17 144.70 111.43 31.26 570.37 491.91 78.46
18 135.00 112.99 20.04 570.26 491.17 79.09
19 98.00 76.03 19.95 570.27 489.41 80.85
20 139.90 117.97 19.89 570.25 491.92 78.33
21 152.20 130.25 19.97 570.36 491.98 78.38
22 151.50 129.54 19.96 570.23 492.21 78.02
23 153.60 131.78 19.80 570.04 491.56 78.48
24 152.80 131.10 19.73 569.97 492.08 77.89
AVG 137.01 111.18 23.84 570.00 491.44 78.56
MAX 157.40 132.31 40.86 570.59 492.83 80.85
MIN 98.00 76.03 19.14 568.93 489.41 77.44