US Army Corps of Engineers

Wanapum Dam

Monday November 2, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 103.10 100.17 0.94 566.14 489.48 76.67
2 71.40 68.55 0.82 565.71 487.06 78.66
3 90.80 88.09 0.72 565.28 488.48 76.81
4 72.60 69.86 0.69 565.15 487.03 78.12
5 77.30 74.73 0.61 564.69 487.34 77.35
6 66.20 63.71 0.52 564.30 486.93 77.38
7 50.00 47.46 0.51 564.43 485.26 79.17
8 51.40 48.88 0.49 564.38 485.43 78.95
9 54.30 48.73 3.56 565.36 485.72 79.63
10 61.90 49.93 9.96 565.87 485.69 80.17
11 62.80 41.82 18.96 566.16 485.84 80.32
12 68.00 46.77 19.18 566.79 486.31 80.48
13 72.40 51.01 19.44 566.99 486.72 80.27
14 72.20 66.34 3.89 567.05 486.69 80.36
15 70.00 66.84 1.14 567.15 487.14 80.01
16 70.40 67.33 1.11 566.93 487.58 79.35
17 76.70 73.58 1.11 567.07 487.62 79.45
18 102.60 99.52 1.12 566.99 489.05 77.93
19 113.00 109.91 1.07 566.75 489.60 77.16
20 124.00 121.01 1.02 566.70 490.15 76.55
21 112.30 109.33 1.01 566.69 489.42 77.27
22 86.20 83.14 1.03 566.75 488.09 78.65
23 101.30 98.33 0.94 566.16 489.06 77.11
24 96.70 93.84 0.85 565.88 488.75 77.12
AVG 80.32 74.54 3.78 566.06 487.52 78.54
MAX 124.00 121.01 19.44 567.15 490.15 80.48
MIN 50.00 41.82 0.49 564.30 485.26 76.55
BUILDING STRONG®