US Army Corps of Engineers

Wanapum Dam

Friday April 10, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 137.10 116.98 18.10 567.51 491.37 76.15
2 139.80 119.67 18.18 567.78 491.54 76.24
3 140.20 119.97 18.25 567.83 491.53 76.30
4 136.60 116.26 18.29 567.90 491.45 76.45
5 137.70 117.40 18.32 567.90 491.54 76.36
6 139.50 119.13 18.32 567.91 491.66 76.26
7 136.80 116.42 18.38 568.04 491.54 76.49
8 136.80 116.36 18.45 568.01 491.47 76.53
9 137.50 116.70 18.84 568.26 491.45 76.82
10 129.80 108.73 19.06 568.48 490.94 77.53
11 121.40 100.12 19.28 568.63 491.00 77.62
12 131.50 109.87 19.63 568.85 491.18 77.67
13 128.20 107.19 19.03 569.06 490.92 78.15
14 115.30 93.80 19.53 569.07 490.57 78.51
15 117.00 95.81 19.17 569.30 490.47 78.83
16 118.20 97.00 19.23 568.90 490.63 78.27
17 124.30 103.45 18.85 568.38 491.15 77.23
18 118.20 97.67 18.57 568.10 491.43 76.67
19 152.60 132.36 18.27 567.49 492.47 75.02
20 148.00 127.96 18.09 567.63 492.10 75.53
21 146.20 126.13 18.03 567.42 491.72 75.71
22 140.20 120.12 18.11 567.73 491.66 76.07
23 134.50 114.23 18.24 567.82 491.26 76.55
24 136.30 116.06 18.23 567.82 491.56 76.26
AVG 133.49 112.89 18.60 568.16 491.36 76.80
MAX 152.60 132.36 19.63 569.30 492.47 78.83
MIN 115.30 93.80 18.03 567.42 490.47 75.02
BUILDING STRONG®