US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

August 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 84.70 93.00 93.00 0.00 952.90 953.00 781.30 171.70
2 79.30 80.50 80.50 0.00 952.60 952.40 780.90 171.50
3 90.60 88.30 88.30 0.00 953.20 952.50 781.20 171.30
4 91.70 91.30 91.30 0.00 953.30 952.20 781.60 170.60
5 90.80 89.60 89.60 0.00 953.60 952.60 781.60 171.00
6 93.30 95.60 95.60 0.00 953.00 953.00 782.10 170.90
7
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31
TOT           
AVG    88.40 89.72 89.72 0.00 953.10 952.62 781.45 171.17
MAX    93.30 95.60 95.60 0.00 953.60 953.00 782.10 171.70
MIN    79.30 80.50 80.50 0.00 952.60 952.20 780.90 170.60