US Army Corps of Engineers

Wanapum Dam

Friday May 29, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 152.90 131.52 19.35 569.35 492.02 77.32
2 135.50 114.48 19.07 568.55 490.99 77.56
3 127.60 106.48 19.14 569.15 491.12 78.04
4 144.80 123.40 19.39 569.53 491.77 77.76
5 163.90 142.57 19.33 569.22 492.62 76.60
6 160.90 139.68 19.23 569.22 492.47 76.76
7 150.70 129.44 19.28 569.35 491.86 77.49
8 134.00 112.62 19.39 569.67 490.87 78.80
9 145.50 123.89 19.59 569.92 491.78 78.14
10 136.10 114.34 19.79 570.13 491.73 78.40
11 132.80 110.76 20.01 570.51 491.15 79.36
12 142.30 120.12 20.16 570.62 491.58 79.03
13 144.50 97.31 45.16 570.72 492.16 78.56
14 174.30 102.16 70.18 570.81 492.66 78.15
15 172.10 83.85 86.21 570.70 493.24 77.46
16 172.70 60.70110.04 570.59 492.56 78.04
17 159.20 47.19110.05 570.64 492.19 78.46
18 157.90 45.97109.91 570.40 492.64 77.76
19 169.40 70.75 96.67 570.04 492.15 77.89
20 178.30 104.53 71.77 569.76 493.22 76.54
21 135.70 113.73 20.01 569.41 491.76 77.64
22 141.90 120.63 19.26 569.13 491.77 77.36
23 124.30 103.11 19.18 569.13 490.92 78.21
24 126.20 104.81 19.35 569.61 491.13 78.47
AVG 149.31 105.17 42.15 569.84 491.93 77.91
MAX 178.30 142.57110.05 570.81 493.24 79.36
MIN 124.30 45.97 19.07 568.55 490.87 76.54
BUILDING STRONG®