US Army Corps of Engineers

Ice Harbor Dam

May 2026

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 2259 94 54 70.00 69.80 13.00 56.20 437.72 437.70 342.17 95.53
2 2239 93 53 70.60 68.70 12.80 55.10 438.19 437.87 342.14 95.73
3 2237 93 54 62.40 62.60 12.70 49.20 438.13 438.09 341.59 96.50
4 2238 93 55 69.00 69.90 12.80 56.40 437.91 438.00 342.17 95.83
5 2259 94 54 75.50 75.70 13.00 61.90 437.88 437.98 342.70 95.28
6 2265 94 55 77.40 75.90 13.00 62.20 438.25 438.10 342.74 95.36
7 2266 94 54 80.70 81.70 13.10 67.90 438.04 438.16 343.38 94.78
8 86.70 85.70 13.00 72.00 438.26 438.03 343.70 94.33
9 90.40 91.80 13.10 78.10 437.92 438.06 344.13 93.93
10 87.10 87.10 13.10 73.40 437.91 437.92 343.87 94.05
11 88.10 88.30 13.10 74.60 437.87 437.94 343.90 94.04
12 89.50 88.80 13.10 75.00 438.01 437.90 343.94 93.96
13 93.90 93.40 13.10 79.70 438.12 437.99 344.34 93.65
14 101.70 102.60 13.20 88.80 437.91 438.04 345.00 93.04
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TOT 15763  379        
AVG 2252 94 54 81.64 81.57 13.01 67.89 438.01 437.98 343.27 94.72
MAX 2266   101.70 102.60 13.20 88.80 438.26 438.16 345.00 96.50
MIN 2237   62.40 62.60 12.70 49.20 437.72 437.70 341.59 93.04