US Army Corps of Engineers

Wanapum Dam

Wednesday April 8, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 98.70 96.69 0.00 569.70 489.68 80.02
2 97.50 95.52 0.00 569.89 489.46 80.43
3 95.00 93.04 0.00 569.79 489.38 80.42
4 97.20 95.21 0.00 570.08 489.39 80.69
5 93.60 91.57 0.00 570.22 489.13 81.09
6 95.40 93.44 0.00 570.34 489.12 81.22
7 101.90 99.88 0.00 570.83 489.48 81.35
8 117.90 114.02 1.89 570.82 491.21 79.62
9 145.10 122.81 20.34 570.98 491.25 79.73
10 132.50 110.08 20.44 571.05 490.90 80.15
11 141.30 118.87 20.42 570.84 491.37 79.48
12 137.70 115.34 20.37 570.93 491.21 79.72
13 134.40 112.00 20.36 570.72 491.27 79.45
14 132.90 109.89 20.97 570.72 491.19 79.53
15 127.60 105.41 20.23 570.62 490.99 79.63
16 123.80 101.78 19.97 569.94 490.89 79.05
17 120.30 98.61 19.67 569.77 490.76 79.01
18 121.70 100.14 19.54 569.49 491.08 78.42
19 129.50 108.32 19.17 568.85 491.16 77.69
20 124.50 103.51 19.01 568.68 491.00 77.68
21 138.20 117.07 19.10 569.23 491.63 77.60
22 134.60 113.41 19.17 569.12 491.34 77.78
23 131.60 110.36 19.20 569.17 491.32 77.85
24 130.90 109.75 19.18 569.11 491.30 77.80
AVG 120.99 105.70 13.29 570.04 490.65 79.39
MAX 145.10 122.81 20.97 571.05 491.63 81.35
MIN 93.60 91.57 0.00 568.68 489.12 77.60