US Army Corps of Engineers

Wanapum Dam

Saturday March 21, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 183.60 182.18 0.00 571.02 494.39 76.62
2 199.50 183.00 15.11 570.92 495.10 75.82
3 196.80 183.87 11.55 571.09 494.62 76.46
4 173.70 172.28 0.00 570.86 494.06 76.80
5 162.40 161.02 0.00 570.57 493.40 77.17
6 149.20 147.77 0.00 570.64 493.02 77.62
7 178.70 177.31 0.00 570.73 493.59 77.14
8 155.80 154.36 0.00 571.01 493.10 77.91
9 173.40 172.04 0.00 570.63 493.64 76.99
10 161.40 160.03 0.00 570.72 493.13 77.60
11 163.90 162.49 0.00 570.81 493.23 77.58
12 143.60 142.23 0.00 570.80 492.32 78.48
13 149.70 134.90 13.38 570.88 492.77 78.11
14 144.80 123.32 20.03 571.05 492.07 78.99
15 147.70 126.20 20.12 571.12 491.47 79.64
16 135.90 83.76 50.76 571.06 491.15 79.90
17 157.40 122.41 33.55 570.90 492.86 78.04
18 162.00 160.62 0.00 570.83 493.20 77.63
19 171.90 170.46 0.00 570.51 493.37 77.13
20 172.50 171.09 0.00 570.45 493.64 76.81
21 146.90 142.68 2.81 570.58 492.22 78.36
22 161.50 149.22 10.87 570.41 493.10 77.32
23 172.10 160.82 9.87 570.46 493.53 76.93
24 143.30 131.95 9.90 570.58 492.49 78.09
AVG 162.82 153.17 8.25 570.78 493.14 77.63
MAX 199.50 183.87 50.76 571.12 495.10 79.90
MIN 135.90 83.76 0.00 570.41 491.15 75.82