US Army Corps of Engineers

Ice Harbor Dam

Monday May 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 71.30 12.70 56.60 438.10 342.06 96.04 342.79
2 69.80 12.80 56.60 438.09 342.19 95.90 342.81
3 69.70 12.80 56.40 438.06 342.01 96.05 342.88
4 69.70 12.70 56.40 438.06 342.15 95.91 342.93
5 69.70 12.80 56.40 438.01 342.06 95.95 342.75
6 69.80 12.80 56.40 438.03 342.05 95.98 342.65
7 69.70 12.80 56.40 438.03 342.01 96.02 342.80
8 69.70 12.70 56.50 438.06 342.00 96.06 342.75
9 69.80 12.80 56.50 438.03 342.06 95.97 342.75
10 69.70 12.70 56.50 438.04 342.12 95.92 342.81
11 69.70 12.80 56.50 438.03 342.07 95.96 342.88
12 69.70 12.70 56.40 438.01 342.12 95.89 342.74
13 69.70 12.70 56.40 438.01 342.18 95.83 342.83
14 69.70 12.80 56.40 437.99 342.13 95.86 342.76
15 69.70 12.80 56.40 437.99 342.20 95.79 342.79
16 69.70 12.80 56.40 437.96 342.12 95.84 342.77
17 69.60 12.80 56.30 437.94 342.16 95.78 342.85
18 69.70 12.80 56.40 438.04 342.26 95.78 342.98
19 69.90 12.80 56.50 437.95 342.21 95.74 342.94
20 69.90 12.80 56.50 437.99 342.24 95.75 343.00
21 71.30 12.80 56.60 437.99 342.73 95.26 343.45
22 69.80 12.90 56.40 437.88 342.25 95.63 343.02
23 69.70 12.90 56.40 437.89 342.40 95.49 342.99
24 69.60 12.80 56.40 437.91 342.29 95.62 343.10
AVG 69.86 12.78 56.45 438.00 342.17 95.83 342.88
MAX 71.30 12.90 56.60 438.10 342.73 96.06 343.45
MIN 69.60 12.70 56.30 437.88 342.00 95.26 342.65
BUILDING STRONG®