US Army Corps of Engineers

Ice Harbor Dam

Monday September 1, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 12.90 12.40 0.00 439.44 339.12 100.32 339.25
2 13.00 12.50 0.00 439.20 339.47 99.73 339.65
3 13.00 12.50 0.00 439.59 339.45 100.14 339.59
4 13.00 12.50 0.00 439.32 339.51 99.81 339.65
5 13.80 12.60 0.70 439.38 339.40 99.98 340.30
6 22.70 12.50 9.70 439.27 339.52 99.75 340.44
7 22.70 12.50 9.70 439.38 339.48 99.90 340.35
8 22.70 12.50 9.70 439.42 339.45 99.97 340.21
9 22.70 12.50 9.70 439.35 339.49 99.86 340.30
10 19.60 12.60 5.00 439.31 339.71 99.60 339.82
11 14.60 12.60 0.00 439.11 339.83 99.28 340.17
12 13.20 12.70 0.00 439.16 339.80 99.36 339.96
13 14.60 12.60 0.00 439.20 339.58 99.62 339.72
14 13.10 12.60 0.00 439.11 339.48 99.63 339.62
15 13.50 13.00 0.00 439.19 339.60 99.59 339.83
16 26.30 25.80 0.00 438.99 340.44 98.55 340.48
17 27.30 26.80 0.00 439.28 340.62 98.66 340.69
18 40.20 39.70 0.00 438.98 341.52 97.46 341.44
19 40.50 40.00 0.00 439.41 341.39 98.02 341.32
20 40.50 40.00 0.00 439.27 341.32 97.95 341.27
21 40.40 39.90 0.00 439.42 341.27 98.15 341.19
22 39.80 39.30 0.00 439.50 340.79 98.71 340.83
23 26.30 25.80 0.00 439.39 339.53 99.86 339.78
24 13.20 12.70 0.00 439.24 338.89 100.35 339.01
AVG 22.48 19.94 1.85 439.29 339.94 99.34 340.20
MAX 40.50 40.00 9.70 439.59 341.52 100.35 341.44
MIN 12.90 12.40 0.00 438.98 338.89 97.46 339.01