US Army Corps of Engineers

Ice Harbor Dam

Sunday August 31, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 22.00 12.50 9.10 439.21 338.60 100.61 339.14
2 22.00 12.50 9.00 439.41 338.79 100.62 339.29
3 22.00 12.50 9.00 439.32 338.80 100.52 339.30
4 23.60 12.50 9.00 439.33 338.85 100.48 339.36
5 22.00 12.50 9.00 439.36 338.86 100.50 339.42
6 22.10 12.50 9.00 439.27 339.01 100.26 339.53
7 22.00 12.50 9.00 439.39 339.06 100.33 339.59
8 22.10 12.50 9.00 439.38 339.14 100.24 339.68
9 22.10 12.50 9.00 439.37 339.22 100.15 339.75
10 22.10 12.60 9.00 439.40 339.37 100.03 339.87
11 23.70 12.60 9.00 439.35 339.44 99.91 339.94
12 22.20 12.60 9.00 439.38 339.52 99.86 339.98
13 23.70 12.60 9.00 439.48 339.62 99.86 340.12
14 22.20 12.60 9.00 439.47 339.56 99.91 340.09
15 23.60 12.60 9.00 439.37 340.19 99.18 340.74
16 22.20 12.60 9.00 439.45 339.82 99.63 340.28
17 22.80 13.30 9.00 439.49 340.08 99.41 340.51
18 35.60 26.00 9.00 439.27 340.88 98.39 341.15
19 35.40 25.90 9.00 439.67 340.80 98.87 341.03
20 36.90 25.90 9.00 439.32 340.67 98.65 340.93
21 35.60 26.10 9.00 439.47 340.59 98.88 340.86
22 35.40 25.90 9.00 439.42 340.58 98.84 340.86
23 22.40 12.90 9.00 439.15 339.16 99.99 339.71
24 21.40 12.50 8.40 439.53 339.29 100.24 339.50
AVG 25.21 15.38 8.98 439.39 339.58 99.81 340.03
MAX 36.90 26.10 9.10 439.67 340.88 100.62 341.15
MIN 21.40 12.50 8.40 439.15 338.60 98.39 339.14
BUILDING STRONG®