US Army Corps of Engineers

Wanapum Dam

Saturday May 9, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 111.00 89.45 19.58 569.96 490.13 79.83
2 122.80 100.93 19.82 570.23 490.43 79.80
3 139.70 110.21 27.52 570.32 491.59 78.73
4 154.70 112.47 40.22 570.44 492.00 78.44
5 166.70 124.47 40.26 570.46 492.60 77.86
6 165.60 123.43 40.16 570.35 492.14 78.21
7 123.20 78.54 42.67 570.74 489.87 80.87
8 133.90 62.66 69.22 570.90 491.03 79.87
9 184.40 106.74 75.62 571.09 492.50 78.60
10 159.00 104.28 52.71 571.17 490.91 80.27
11 163.90 122.02 39.85 570.79 492.10 78.70
12 161.50 132.56 26.92 570.70 492.90 77.80
13 159.90 137.59 20.27 570.83 492.01 78.82
14 133.60 111.25 20.35 570.95 491.19 79.76
15 137.00 100.16 34.87 570.87 491.81 79.06
16 173.00 117.32 53.72 571.01 493.28 77.74
17 163.00 140.61 20.43 570.95 493.17 77.78
18 175.90 135.94 37.97 570.79 493.82 76.97
19 191.00 146.19 42.80 570.90 494.13 76.77
20 189.10 141.95 45.18 570.88 494.07 76.81
21 189.60 142.35 45.28 570.97 494.14 76.83
22 192.60 145.03 45.52 571.11 494.24 76.87
23 198.40 150.64 45.71 571.11 494.42 76.69
24 192.10 144.22 45.84 571.21 494.27 76.94
AVG 161.73 120.04 39.69 570.78 492.45 78.33
MAX 198.40 150.64 75.62 571.21 494.42 80.87
MIN 111.00 62.66 19.58 569.96 489.87 76.69
BUILDING STRONG®