US Army Corps of Engineers

Wanapum Dam

Monday May 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 167.80 130.90 34.91 570.79 493.29 77.50
2 180.60 138.52 40.07 570.87 493.68 77.19
3 175.40 128.50 44.92 571.05 493.52 77.53
4 174.30 122.24 50.02 570.88 493.28 77.60
5 172.60 120.61 49.98 570.90 493.29 77.61
6 176.70 131.32 43.42 570.81 493.54 77.28
7 155.90 109.98 43.87 570.80 492.22 78.58
8 152.70 75.51 75.16 570.91 492.04 78.87
9 171.10 68.67100.47 570.87 492.36 78.51
10 173.40 71.07100.28 570.91 492.22 78.69
11 174.50 72.51100.02 570.56 492.24 78.32
12 173.10 71.66 99.42 570.45 492.20 78.25
13 174.90 74.02 98.88 570.30 492.32 77.99
14 174.60 73.89 98.66 570.13 492.55 77.57
15 174.80 74.60 98.20 569.83 492.21 77.61
16 170.60 70.60 98.03 569.58 492.27 77.31
17 173.80 73.78 98.01 569.51 492.57 76.94
18 175.70 79.85 93.85 569.55 492.13 77.43
19 172.10 90.22 79.83 569.34 492.34 77.00
20 179.70 137.38 40.27 569.33 492.70 76.63
21 147.60 126.17 19.43 569.71 491.81 77.90
22 160.80 139.26 19.57 569.76 492.34 77.42
23 165.00 143.31 19.64 569.92 492.67 77.25
24 157.10 135.30 19.81 570.19 492.14 78.05
AVG 169.78 102.49 65.28 570.29 492.58 77.71
MAX 180.60 143.31100.47 571.05 493.68 78.87
MIN 147.60 68.67 19.43 569.33 491.81 76.63