US Army Corps of Engineers

Wanapum Dam

Wednesday March 18, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 123.70 122.31 0.00 570.49 491.69 78.80
2 128.50 127.12 0.00 570.56 491.73 78.82
3 139.30 137.89 0.00 570.20 492.45 77.75
4 140.90 139.52 0.00 570.15 492.33 77.81
5 140.30 138.88 0.00 570.00 492.43 77.57
6 139.80 138.40 0.00 570.07 492.51 77.57
7 145.70 144.31 0.00 569.88 492.85 77.03
8 145.10 143.70 0.00 569.78 492.45 77.33
9 132.60 131.23 0.00 569.67 492.36 77.31
10 116.20 114.80 0.00 569.75 491.35 78.40
11 130.40 128.98 0.00 569.84 491.93 77.90
12 109.50 108.14 0.00 569.73 491.05 78.68
13 110.90 109.48 0.00 569.58 491.15 78.43
14 129.50 128.11 0.00 569.85 491.69 78.15
15 132.90 131.54 0.00 569.51 492.00 77.51
16 115.60 114.24 0.00 569.28 491.11 78.17
17 117.30 115.88 0.00 569.12 491.35 77.77
18 128.60 127.24 0.00 569.25 491.73 77.53
19 136.30 134.90 0.00 569.35 491.94 77.41
20 131.60 130.23 0.00 569.45 491.75 77.70
21 123.60 122.16 0.00 569.74 491.44 78.30
22 120.60 119.17 0.00 569.86 491.19 78.67
23 109.30 107.87 0.00 570.17 490.62 79.55
24 108.20 106.77 0.00 570.57 490.79 79.78
AVG 127.35 125.95 0.00 569.83 491.75 78.08
MAX 145.70 144.31 0.00 570.57 492.85 79.78
MIN 108.20 106.77 0.00 569.12 490.62 77.03
BUILDING STRONG®