US Army Corps of Engineers

Wanapum Dam

Friday October 30, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 64.30 60.63 1.64 568.68 487.09 81.59
2 66.50 62.96 1.58 568.46 487.21 81.26
3 64.60 61.07 1.52 568.23 487.02 81.21
4 62.00 58.59 1.43 567.93 486.82 81.12
5 64.50 61.17 1.36 567.67 486.98 80.69
6 41.30 37.95 1.32 567.63 485.47 82.16
7 48.80 45.51 1.26 567.35 486.21 81.14
8 52.70 49.50 1.21 567.35 486.22 81.14
9 61.40 58.14 1.28 567.86 486.67 81.20
10 61.30 57.90 1.42 568.21 487.01 81.20
11 63.90 60.48 1.44 568.18 487.24 80.94
12 71.40 67.83 1.53 568.68 487.39 81.29
13 63.90 60.26 1.68 569.22 487.29 81.93
14 58.80 54.97 1.82 569.41 487.01 82.40
15 57.30 53.43 1.85 569.84 487.04 82.79
16 67.70 63.85 1.86 568.99 488.05 80.93
17 92.60 88.96 1.68 568.71 489.65 79.06
18 109.90 106.32 1.61 568.68 490.14 78.54
19 145.40 141.86 1.50 568.00 492.01 75.98
20 144.20 140.83 1.34 567.65 491.95 75.69
21 109.40 106.06 1.35 567.83 490.35 77.48
22 108.00 104.67 1.29 567.50 490.08 77.42
23 85.10 81.88 1.27 567.58 488.87 78.71
24 93.30 90.10 1.22 567.45 489.14 78.31
AVG 77.43 73.95 1.48 568.21 488.04 80.17
MAX 145.40 141.86 1.86 569.84 492.01 82.79
MIN 41.30 37.95 1.21 567.35 485.47 75.69