US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

February 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 34185 1424 34 110.10 108.60 108.60 0.00 952.80 952.30 780.70 171.60
2 40007 1667 33 125.30 126.80 126.80 0.00 952.40 952.10 782.00 170.10
3 39286 1637 32 121.20 123.50 123.50 0.00 951.80 952.40 782.60 169.80
4 33526 1397 31 104.60 104.20 104.20 0.00 952.50 952.30 779.90 172.40
5 36029 1501 32 113.80 111.90 111.90 0.00 953.00 952.60 780.60 172.00
6 39019 1626 33 120.50 122.50 122.50 0.00 952.40 952.80 782.70 170.10
7 33347 1389 33 107.60 103.30 103.30 0.00 953.50 952.70 780.10 172.60
8 37025 1543 33 113.10 115.40 115.40 0.00 952.90 952.40 781.60 170.80
9 124.70 128.90 128.90 0.00 951.80 951.90 783.20 168.70
10 128.80 126.10 126.10 0.00 952.50 952.10 783.80 168.30
11 119.10 121.00 121.00 0.00 952.00 952.50 782.50 170.00
12 123.90 123.50 123.50 0.00 952.20 952.10 782.50 169.60
13 124.40 122.90 122.90 0.00 952.50 952.20 782.30 169.90
14 113.70 110.60 110.60 0.00 953.30 952.70 781.30 171.40
15 117.30 121.90 121.90 0.00 952.10 952.90 782.00 170.90
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TOT292424  262        
AVG 36553 1523 33 117.87 118.07 118.07 0.00 952.51 952.40 781.85 170.55
MAX 40007   128.80 128.90 128.90 0.00 953.50 952.90 783.80 172.60
MIN 33347   104.60 103.30 103.30 0.00 951.80 951.90 779.90 168.30