US Army Corps of Engineers

Wanapum Dam

Thursday November 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 147.30 144.79 0.54 564.40 491.75 72.64
2 146.10 143.55 0.50 564.45 491.44 73.01
3 125.40 122.85 0.51 564.42 490.08 74.34
4 62.10 59.55 0.52 564.54 486.70 77.84
5 60.90 58.43 0.51 564.20 486.62 77.57
6 61.90 59.37 0.49 564.52 487.33 77.19
7 77.10 74.57 0.55 564.80 487.19 77.61
8 51.90 49.27 0.59 565.05 486.10 78.95
9 49.50 46.79 0.69 565.51 485.92 79.59
10 49.30 46.52 0.76 565.75 485.69 80.06
11 46.30 43.50 0.83 566.12 485.77 80.35
12 50.00 47.10 0.90 566.38 486.12 80.26
13 56.30 53.30 0.98 566.67 486.49 80.18
14 58.00 54.90 1.07 567.03 486.23 80.79
15 60.60 57.50 1.11 567.02 486.80 80.22
16 103.30 100.23 1.06 566.65 489.94 76.71
17 130.40 127.38 1.00 566.67 490.59 76.08
18 130.00 126.98 0.97 566.36 490.69 75.67
19 128.90 126.00 0.89 566.27 490.85 75.42
20 126.50 123.57 0.90 566.29 490.58 75.71
21 121.80 118.87 0.91 566.43 490.14 76.29
22 121.50 118.53 0.94 566.50 490.18 76.32
23 106.30 103.33 0.98 566.68 489.25 77.43
24 94.20 91.14 1.02 566.80 488.58 78.23
AVG 90.23 87.42 0.80 565.81 488.38 77.44
MAX 147.30 144.79 1.11 567.03 491.75 80.79
MIN 46.30 43.50 0.49 564.20 485.69 72.64