US Army Corps of Engineers

Ice Harbor Dam

Sunday February 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 33.20 12.80 20.10 439.31 339.97 99.34 340.50
2 26.00 12.90 12.80 438.97 339.79 99.18 340.52
3 26.50 12.90 11.80 438.86 339.39 99.47 340.08
4 25.00 12.80 11.80 438.82 339.36 99.46 340.04
5 25.00 12.90 11.80 438.58 339.43 99.15 340.02
6 25.00 12.80 11.90 438.58 339.38 99.20 340.05
7 25.00 12.80 11.90 438.46 339.40 99.06 340.03
8 26.60 12.80 12.00 438.83 339.46 99.37 340.08
9 25.20 12.90 12.00 438.67 339.44 99.23 340.10
10 25.20 12.80 12.00 438.69 339.47 99.22 340.19
11 25.20 12.90 12.10 438.81 339.45 99.36 340.17
12 25.30 12.90 12.00 438.70 339.46 99.24 340.18
13 25.30 12.90 12.00 438.89 339.56 99.33 340.14
14 25.20 12.80 12.00 438.43 339.58 98.85 340.22
15 25.20 12.90 12.00 438.50 339.68 98.82 340.35
16 25.30 13.00 12.00 438.43 339.64 98.79 340.39
17 25.30 12.90 12.00 438.61 339.71 98.90 340.40
18 25.30 12.90 12.10 438.94 339.85 99.09 340.49
19 25.30 12.90 12.10 438.89 339.78 99.11 340.50
20 25.50 13.20 12.00 439.19 339.78 99.41 340.52
21 25.50 13.20 12.00 439.29 339.78 99.51 340.53
22 25.50 13.20 12.00 439.41 339.65 99.76 340.50
23 25.50 13.20 12.00 439.32 339.77 99.55 340.45
24 25.50 13.30 11.90 439.38 339.68 99.70 340.41
AVG 25.73 12.94 12.35 438.86 339.60 99.25 340.29
MAX 33.20 13.30 20.10 439.41 339.97 99.76 340.53
MIN 25.00 12.80 11.80 438.43 339.36 98.79 340.02
BUILDING STRONG®