US Army Corps of Engineers

Wanapum Dam

Saturday August 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 138.00 117.21 18.77 568.44 491.17 77.27
2 127.40 106.65 18.72 568.53 490.99 77.54
3 115.80 95.19 18.62 567.96 489.95 78.00
4 103.80 83.53 18.31 567.88 489.62 78.27
5 123.90 103.54 18.38 568.08 490.47 77.61
6 111.70 91.33 18.36 567.76 489.58 78.18
7 97.40 77.12 18.27 567.91 488.93 78.99
8 68.00 47.52 18.48 568.23 487.33 80.89
9 71.10 50.53 18.55 568.35 487.71 80.64
10 79.10 58.22 18.84 568.96 488.09 80.87
11 81.10 59.75 19.38 569.67 488.24 81.43
12 92.30 70.69 19.58 569.91 488.64 81.27
13 84.40 62.75 19.68 569.87 488.34 81.52
14 70.00 48.20 19.79 569.81 487.64 82.18
15 75.00 53.45 19.59 569.71 488.12 81.58
16 81.50 59.97 19.54 569.62 488.41 81.21
17 108.60 87.20 19.40 569.15 490.02 79.12
18 132.70 111.66 19.02 568.77 490.86 77.91
19 127.30 106.40 18.88 568.66 490.58 78.08
20 124.30 103.58 18.71 568.23 490.41 77.82
21 114.60 94.09 18.50 568.10 489.78 78.32
22 119.10 98.70 18.37 567.86 490.26 77.60
23 132.90 112.68 18.24 567.72 490.71 77.02
24 118.40 98.15 18.25 567.90 490.20 77.70
AVG 104.10 83.25 18.84 568.63 489.42 79.21
MAX 138.00 117.21 19.79 569.91 491.17 82.18
MIN 68.00 47.52 18.24 567.72 487.33 77.02