US Army Corps of Engineers

Wanapum Dam

Thursday May 7, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 155.20 134.04 19.12 569.05 491.82 77.24
2 147.60 126.53 19.07 568.94 492.15 76.78
3 141.90 120.88 19.03 568.78 492.18 76.60
4 144.40 123.46 18.91 568.71 492.03 76.68
5 158.00 137.22 18.80 568.61 492.20 76.41
6 139.00 118.24 18.80 568.56 491.93 76.63
7 134.00 113.14 18.84 568.79 491.20 77.59
8 117.60 96.61 18.99 568.92 490.30 78.62
9 140.40 119.48 18.90 568.73 491.60 77.14
10 153.80 132.88 18.95 568.74 492.42 76.31
11 138.70 117.79 18.91 568.65 491.58 77.07
12 147.40 126.57 18.79 568.69 492.04 76.65
13 146.50 125.59 18.88 568.64 492.19 76.45
14 150.10 129.25 18.84 568.64 492.15 76.50
15 143.80 123.05 18.80 568.55 491.93 76.62
16 143.20 122.50 18.75 568.44 492.15 76.29
17 146.50 125.78 18.74 568.50 491.99 76.52
18 137.20 116.47 18.74 568.46 491.73 76.73
19 152.80 132.06 18.71 568.49 492.40 76.09
20 158.60 137.89 18.76 568.57 492.58 75.98
21 150.30 129.49 18.81 568.67 492.21 76.46
22 152.50 131.65 18.86 568.75 492.29 76.46
23 147.20 126.27 18.97 568.92 492.00 76.92
24 142.60 121.56 19.08 569.12 491.73 77.39
AVG 145.39 124.52 18.88 568.71 491.95 76.76
MAX 158.60 137.89 19.12 569.12 492.58 78.62
MIN 117.60 96.61 18.71 568.44 490.30 75.98