US Army Corps of Engineers

Wanapum Dam

Sunday May 10, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 200.30 152.56 45.78 571.03 494.53 76.50
2 178.30 145.65 30.64 571.01 493.66 77.35
3 172.20 140.19 29.97 570.95 493.67 77.28
4 179.00 147.07 29.92 570.94 493.69 77.25
5 175.20 143.23 29.93 570.92 493.53 77.39
6 166.90 135.06 29.87 570.79 492.83 77.96
7 154.70 127.42 25.27 570.87 491.96 78.91
8 144.40 112.02 30.36 570.84 492.56 78.28
9 150.90 128.61 20.27 570.70 492.39 78.31
10 144.20 121.95 20.24 570.58 491.56 79.02
11 144.80 114.52 28.27 570.68 491.45 79.23
12 149.50 108.44 39.08 570.61 491.21 79.40
13 142.60 101.63 39.02 570.61 490.76 79.85
14 130.60 89.74 38.90 570.57 490.50 80.07
15 117.20 71.54 43.65 570.83 489.54 81.29
16 135.50 75.73 57.75 569.87 489.51 80.36
17 125.10 70.62 52.50 570.29 490.10 80.19
18 142.60 98.67 41.94 570.54 491.56 78.98
19 147.00 125.37 19.68 569.51 491.43 78.07
20 145.20 123.73 19.51 569.80 491.58 78.23
21 145.80 124.29 19.55 569.59 491.58 78.01
22 149.00 127.54 19.42 569.56 491.75 77.82
23 157.90 136.44 19.50 569.60 492.20 77.40
24 166.40 144.97 19.39 569.40 492.08 77.33
AVG 152.72 119.46 31.27 570.42 491.90 78.52
MAX 200.30 152.56 57.75 571.03 494.53 81.29
MIN 117.20 70.62 19.39 569.40 489.51 76.50
BUILDING STRONG®