US Army Corps of Engineers

Wanapum Dam

Saturday April 11, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 144.50 124.11 18.38 568.09 491.79 76.29
2 134.10 113.56 18.53 568.16 491.39 76.77
3 142.90 122.38 18.54 568.27 491.63 76.64
4 149.80 129.19 18.63 568.45 492.05 76.40
5 144.30 123.51 18.74 568.50 492.07 76.43
6 154.80 134.07 18.74 568.48 492.59 75.89
7 151.90 131.10 18.78 568.67 491.94 76.73
8 136.50 115.60 18.88 568.73 491.09 77.64
9 131.10 110.26 18.86 568.75 490.94 77.81
10 105.10 84.08 18.97 568.90 489.92 78.98
11 105.40 84.44 18.97 568.87 490.01 78.86
12 104.50 83.43 19.08 569.12 489.72 79.40
13 101.20 79.98 19.24 569.21 489.60 79.61
14 90.90 69.74 19.18 569.03 489.14 79.89
15 94.50 73.39 19.12 569.29 488.96 80.32
16 98.30 77.16 19.11 568.56 489.04 79.52
17 89.90 69.18 18.68 568.20 488.75 79.45
18 107.80 87.34 18.47 567.99 490.37 77.63
19 151.70 131.50 18.21 567.63 491.99 75.64
20 130.90 110.70 18.16 567.56 490.81 76.75
21 142.40 122.29 18.13 567.80 491.65 76.15
22 140.70 120.46 18.25 567.90 491.24 76.66
23 135.60 115.23 18.39 568.01 491.07 76.94
24 128.70 108.25 18.41 568.02 490.58 77.44
AVG 125.73 105.04 18.69 568.42 490.76 77.66
MAX 154.80 134.07 19.24 569.29 492.59 80.32
MIN 89.90 69.18 18.13 567.56 488.75 75.64
BUILDING STRONG®