US Army Corps of Engineers

Wanapum Dam

Friday March 20, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 162.00 115.94 44.68 571.29 492.46 78.83
2 161.20 127.19 32.59 570.98 492.92 78.06
3 148.70 134.00 13.34 570.96 492.38 78.58
4 142.50 141.08 0.00 571.06 492.50 78.56
5 137.80 136.45 0.00 570.79 492.13 78.66
6 139.00 137.56 0.00 570.74 492.49 78.25
7 145.40 133.54 10.44 571.14 492.77 78.36
8 149.50 118.28 29.77 571.03 492.20 78.83
9 155.90 109.74 44.79 571.05 492.85 78.19
10 162.30 130.20 30.69 571.20 492.92 78.28
11 161.40 125.88 34.07 571.19 492.90 78.29
12 155.40 114.21 39.80 571.21 492.78 78.42
13 172.80 136.79 34.57 571.26 493.42 77.85
14 164.60 133.01 30.18 571.25 493.15 78.11
15 164.10 124.40 38.33 571.22 493.44 77.78
16 169.70 141.95 26.39 571.29 493.62 77.67
17 165.60 159.61 4.62 571.32 493.44 77.87
18 168.90 167.49 0.00 571.02 493.70 77.31
19 150.70 149.26 0.00 571.12 492.83 78.28
20 164.60 163.23 0.00 571.14 493.53 77.62
21 161.40 160.00 0.00 571.02 493.20 77.82
22 150.90 149.48 0.00 570.97 492.80 78.18
23 161.20 159.78 0.00 571.19 493.59 77.60
24 182.50 181.10 0.00 570.96 494.24 76.73
AVG 158.25 139.59 17.26 571.10 493.01 78.09
MAX 182.50 181.10 44.79 571.32 494.24 78.83
MIN 137.80 109.74 0.00 570.74 492.13 76.73
BUILDING STRONG®