US Army Corps of Engineers

Ice Harbor Dam

September 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 2367 99 55 20.00 20.80 13.10 7.00 438.32 438.18 338.51 99.67
2 17.30 18.00 13.10 4.20 438.14 438.26 338.98 99.28
3 21.50 18.10 15.90 1.40 438.93 438.62 339.31 99.31
4
5 28.40 27.70 22.30 4.70 439.06 439.15 339.79 99.36
6 24.90 25.30 15.50 9.20 438.97 439.00 339.16 99.84
7 23.50 24.50 19.20 4.70 438.74 438.84 339.47 99.37
8 21.40 22.20 17.20 4.40 438.55 438.69 339.28 99.41
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TOT 2367  55        
AVG 2367 99 55 22.43 22.37 16.61 5.09 438.67 438.68 339.21 99.46
MAX 2367   28.40 27.70 22.30 9.20 439.06 439.15 339.79 99.84
MIN 2367   17.30 18.00 13.10 1.40 438.14 438.18 338.51 99.28