US Army Corps of Engineers

Wanapum Dam

Sunday March 22, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 173.00 162.67 8.93 570.43 493.42 77.01
2 160.30 158.89 0.00 570.48 493.05 77.43
3 166.50 165.15 0.00 570.30 493.30 77.00
4 158.90 157.49 0.00 570.58 493.09 77.49
5 170.10 168.65 0.00 570.65 493.40 77.25
6 165.70 164.30 0.00 570.72 493.25 77.47
7 169.30 167.86 0.00 570.80 493.51 77.28
8 170.30 168.86 0.00 570.74 493.21 77.53
9 158.60 157.16 0.00 570.76 493.21 77.55
10 167.50 166.14 0.00 570.91 493.17 77.74
11 158.00 156.63 0.00 570.90 492.90 78.00
12 156.70 155.26 0.00 570.88 493.05 77.83
13 172.20 170.79 0.00 570.85 493.43 77.42
14 159.20 157.84 0.00 570.93 493.12 77.82
15 152.00 150.57 0.00 570.70 492.68 78.02
16 157.90 156.46 0.00 570.48 492.70 77.78
17 167.90 166.48 0.00 570.40 493.34 77.06
18 168.60 167.25 0.00 569.87 493.30 76.56
19 166.30 164.87 0.00 570.11 493.27 76.84
20 163.50 162.10 0.00 569.96 493.07 76.90
21 162.40 161.04 0.00 569.83 493.01 76.82
22 167.00 165.61 0.00 569.91 493.15 76.76
23 169.40 168.00 0.00 569.76 493.15 76.61
24 167.60 166.21 0.00 569.62 493.05 76.56
AVG 164.54 162.76 0.37 570.44 493.16 77.28
MAX 173.00 170.79 8.93 570.93 493.51 78.02
MIN 152.00 150.57 0.00 569.62 492.68 76.56