US Army Corps of Engineers

Wanapum Dam

Friday June 19, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 133.30 113.96 17.30 566.53 490.87 75.67
2 120.20 100.92 17.33 566.24 490.35 75.89
3 114.60 95.43 17.20 566.34 489.90 76.44
4 100.50 81.15 17.34 566.53 489.54 77.00
5 98.80 79.46 17.36 566.41 489.35 77.06
6 131.40 112.17 17.25 566.30 491.21 75.09
7 145.30 126.08 17.21 566.37 491.73 74.64
8 136.50 117.14 17.31 566.44 491.36 75.08
9 143.70 124.42 17.28 566.37 491.72 74.65
10 143.80 124.52 17.27 566.42 491.78 74.64
11 145.60 126.34 17.30 566.35 491.89 74.46
12 148.20 128.96 17.27 566.37 491.93 74.44
13 146.20 126.91 17.30 566.49 491.81 74.69
14 139.70 120.40 17.29 566.28 491.70 74.58
15 153.80 134.52 17.31 566.57 492.35 74.22
16 153.40 133.93 17.49 566.77 492.30 74.47
17 160.60 141.00 17.56 566.83 492.56 74.27
18 159.00 139.40 17.64 566.96 492.51 74.45
19 153.60 133.78 17.78 567.25 492.37 74.88
20 157.70 137.84 17.86 567.26 492.49 74.78
21 149.40 129.45 17.99 567.59 492.18 75.41
22 148.40 128.19 18.20 567.87 492.07 75.80
23 123.40 102.95 18.45 568.35 490.63 77.72
24 111.40 90.66 18.74 568.59 490.22 78.38
AVG 138.27 118.73 17.54 566.81 491.45 75.36
MAX 160.60 141.00 18.74 568.59 492.56 78.38
MIN 98.80 79.46 17.20 566.24 489.35 74.22