US Army Corps of Engineers

Ice Harbor Dam

April 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 9268 386 58 74.50 76.30 54.10 21.40 438.51 438.31 344.02 94.29
2 9242 385 58 69.60 72.30 54.20 17.50 437.85 437.95 343.85 94.10
3 2337 97 57 74.10 73.60 13.40 59.60 437.96 438.09 342.71 95.38
4 2319 97 57 73.20 72.00 13.30 58.30 438.25 438.13 342.59 95.54
5 2277 95 56 68.20 69.20 13.00 55.60 437.99 438.14 342.47 95.67
6 2288 95 56 68.20 67.90 13.00 54.10 438.07 438.11 342.14 95.97
7 63.90 65.60 13.00 51.90 437.67 437.94 342.06 95.88
8 62.40 62.20 13.00 48.60 437.69 437.67 341.53 96.14
9 65.00 62.80 12.90 49.20 438.23 438.00 341.59 96.41
10 66.00 66.30 13.00 52.90 438.13 438.14 342.02 96.12
11 63.80 64.70 13.10 51.00 437.94 438.07 342.12 95.95
12 71.40 70.90 13.10 57.00 438.07 438.00 342.57 95.43
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TOT 27729  343        
AVG 4622 193 57 68.36 68.65 19.93 48.09 438.03 438.05 342.47 95.57
MAX 9268   74.50 76.30 54.20 59.60 438.51 438.31 344.02 96.41
MIN 2277   62.40 62.20 12.90 17.50 437.67 437.67 341.53 94.10