US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

May 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 36985 1541 24 122.60 119.90 119.90 0.00 952.30 951.90 782.70 169.20
2 35158 1465 24 111.30 112.50 112.50 0.00 952.00 952.00 781.40 170.60
3 26753 1115 24 87.60 84.10 84.10 0.00 952.20 952.60 779.50 173.10
4 26753 1115 24 87.60 84.10 84.10 0.00 953.10 952.60 779.50 173.10
5 33633 1401 25 107.80 106.80 106.80 0.00 953.30 953.00 781.90 171.10
6 34312 1430 25 113.30 108.60 108.60 0.00 954.50 953.10 781.50 171.60
7 37033 1543 21 109.40 121.40 118.70 2.70 951.40 953.50 791.00 162.50
8 35040 1460 22 113.90 113.10 113.10 0.00 951.10 951.50 782.20 169.30
9 40824 1701 25 136.50 135.00 135.00 0.00 952.00 951.70 783.80 167.90
10 31777 1324 24 102.00 100.80 100.80 0.00 952.30 952.10 781.00 171.10
11 33949 1415 24 109.40 107.90 107.90 0.00 952.70 952.30 781.30 171.00
12 35579 1482 26 110.30 113.40 113.40 0.00 951.90 952.40 782.10 170.30
13 101.20 98.10 98.10 0.00 952.70 952.20 781.10 171.10
14 99.40 100.90 100.90 0.00 952.30 952.30 782.50 169.80
15 99.40 97.10 97.10 0.00 952.90 952.90 781.00 171.90
16 93.30 96.00 96.00 0.00 952.20 952.60 780.80 171.80
17 74.90 76.10 76.10 0.00 951.90 952.10 778.90 173.20
18 67.20 67.20 67.20 0.00 951.90 951.90 779.50 172.40
19 100.00 98.50 98.50 0.00 952.30 951.70 780.90 170.80
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TOT407796  288        
AVG 33983 1416 24 102.48 102.18 102.04 0.14 952.37 952.34 781.72 170.62
MAX 40824   136.50 135.00 135.00 2.70 954.50 953.50 791.00 173.20
MIN 26753   67.20 67.20 67.20 0.00 951.10 951.50 778.90 162.50
BUILDING STRONG®