US Army Corps of Engineers

Wanapum Dam

Wednesday January 21, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 158.50 157.09 0.00 571.22 493.50 77.72
2 167.90 166.53 0.00 570.98 493.84 77.14
3 158.90 157.50 0.00 570.85 493.66 77.19
4 163.60 162.23 0.00 570.73 493.81 76.92
5 163.90 162.50 0.00 570.62 493.70 76.93
6 169.20 167.78 0.00 570.68 494.03 76.64
7 165.50 164.14 0.00 570.75 493.80 76.95
8 152.60 151.16 0.00 570.75 493.28 77.47
9 162.60 161.19 0.00 570.84 493.55 77.30
10 148.50 147.08 0.00 571.01 493.25 77.75
11 164.30 162.88 0.00 570.98 493.60 77.38
12 159.10 157.66 0.00 571.03 493.40 77.64
13 162.30 160.85 0.00 570.94 493.56 77.38
14 148.70 147.29 0.00 571.09 493.18 77.92
15 163.50 162.14 0.00 571.15 493.61 77.55
16 162.30 160.94 0.00 571.17 493.68 77.49
17 169.50 168.09 0.00 571.17 493.99 77.18
18 169.40 168.03 0.00 571.17 493.99 77.18
19 168.30 166.88 0.00 571.19 493.95 77.24
20 168.40 167.01 0.00 571.17 493.99 77.18
21 166.80 165.38 0.00 571.23 493.83 77.40
22 166.20 164.78 0.00 571.25 493.92 77.33
23 170.20 168.82 0.00 571.25 493.99 77.26
24 167.10 165.67 0.00 571.17 493.94 77.23
AVG 163.22 161.82 0.00 571.02 493.71 77.31
MAX 170.20 168.82 0.00 571.25 494.03 77.92
MIN 148.50 147.08 0.00 570.62 493.18 76.64