US Army Corps of Engineers

Wanapum Dam

Friday May 15, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 160.20 138.41 19.75 569.98 492.65 77.32
2 160.90 139.20 19.75 570.15 492.35 77.80
3 145.90 124.06 19.80 569.99 492.26 77.73
4 134.00 106.24 25.74 570.21 491.40 78.81
5 164.10 114.73 47.38 570.35 492.75 77.59
6 145.70 113.63 30.11 570.47 492.41 78.06
7 153.60 121.41 30.18 570.56 492.14 78.42
8 127.90 59.70 66.23 570.74 490.82 79.92
9 183.30 101.27 80.03 570.75 492.86 77.89
10 151.50 69.57 79.94 570.70 491.86 78.85
11 154.00 72.25 79.75 570.55 491.70 78.85
12 155.80 74.04 79.76 570.63 491.79 78.84
13 152.10 70.14 79.92 570.67 491.75 78.92
14 158.00 76.19 79.83 570.60 492.15 78.45
15 156.10 74.69 79.40 570.38 491.86 78.52
16 148.80 67.45 79.32 570.35 491.55 78.80
17 153.20 71.91 79.28 570.56 491.89 78.66
18 161.20 79.69 79.56 570.58 492.68 77.90
19 181.20 106.57 72.67 570.51 493.32 77.19
20 153.50 111.58 39.92 570.23 492.71 77.52
21 170.10 128.25 39.82 570.29 493.34 76.95
22 159.30 117.37 39.89 570.10 492.89 77.20
23 167.20 125.39 39.78 570.02 492.81 77.21
24 161.30 119.36 39.97 570.42 492.94 77.49
AVG 156.62 99.30 55.32 570.41 492.29 78.12
MAX 183.30 139.20 80.03 570.75 493.34 79.92
MIN 127.90 59.70 19.75 569.98 490.82 76.95
BUILDING STRONG®