US Army Corps of Engineers

Wanapum Dam

Tuesday June 16, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 195.40 133.43 59.96 570.99 494.29 76.71
2 175.70 131.53 42.16 570.90 493.92 76.98
3 166.70 135.24 29.44 570.96 492.96 78.00
4 139.50 116.99 20.47 570.98 492.54 78.45
5 162.90 140.56 20.38 570.74 493.23 77.51
6 162.60 140.39 20.25 570.70 493.24 77.46
7 154.50 132.22 20.30 570.79 492.71 78.07
8 142.90 120.64 20.21 570.47 492.04 78.43
9 140.30 118.39 19.95 570.30 492.01 78.29
10 146.10 123.94 20.15 570.59 492.59 77.99
11 154.30 132.24 20.08 570.33 492.38 77.95
12 147.00 125.01 20.03 570.46 492.12 78.35
13 155.80 133.66 20.16 570.65 492.90 77.75
14 155.90 133.73 20.12 570.52 492.58 77.94
15 149.90 127.69 20.20 570.63 492.55 78.08
16 156.60 134.30 20.28 570.83 492.80 78.03
17 163.90 141.59 20.30 570.73 492.95 77.78
18 164.20 141.90 20.29 570.87 493.14 77.73
19 165.40 143.02 20.40 570.93 493.25 77.68
20 165.60 143.23 20.39 570.93 493.11 77.82
21 164.60 142.15 20.44 571.04 493.19 77.85
22 167.10 144.61 20.50 571.11 493.24 77.87
23 168.70 142.82 23.87 571.13 493.43 77.71
24 178.30 136.46 39.81 571.15 493.51 77.63
AVG 160.16 133.99 24.17 570.78 492.95 77.84
MAX 195.40 144.61 59.96 571.15 494.29 78.45
MIN 139.50 116.99 19.95 570.30 492.01 76.71
BUILDING STRONG®