US Army Corps of Engineers

Wanapum Dam

Wednesday August 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 104.80 84.57 18.18 567.28 489.35 77.94
2 78.50 58.60 17.91 567.48 487.90 79.58
3 81.50 61.30 18.16 567.72 488.36 79.35
4 98.60 78.54 18.06 567.31 489.02 78.29
5 89.80 69.99 17.80 567.03 488.32 78.72
6 68.70 48.82 17.90 567.34 487.63 79.71
7 80.40 60.56 17.81 567.02 488.13 78.90
8 80.00 60.28 17.75 567.17 487.92 79.26
9 67.60 47.69 17.93 567.38 487.34 80.04
10 0.00 48.70 17.82 567.06 487.50 79.56
11 68.60 48.87 17.76 567.16 487.84 79.32
12 84.70 64.80 17.87 567.35 488.27 79.08
13 72.00 52.09 17.96 567.36 487.61 79.75
14 91.80 71.77 17.98 567.50 489.03 78.47
15 94.50 74.41 18.10 567.64 489.19 78.45
16 105.80 85.73 18.11 567.52 489.93 77.59
17 134.60 114.58 18.02 567.45 491.48 75.97
18 144.20 124.02 18.15 567.71 492.13 75.58
19 152.40 132.21 18.20 567.66 492.33 75.33
20 148.00 127.87 18.18 567.72 491.79 75.93
21 137.50 117.24 18.27 568.07 491.36 76.70
22 122.50 101.99 18.55 568.37 490.52 77.85
23 112.70 92.12 18.61 568.36 489.98 78.37
24 95.40 74.74 18.70 568.54 489.60 78.94
AVG 96.44 79.23 18.07 567.55 489.27 78.28
MAX 152.40 132.21 18.70 568.54 492.33 80.04
MIN 0.00 47.69 17.75 567.02 487.34 75.33
BUILDING STRONG®