US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

June 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 46432 1935 23 167.60 159.10 155.40 3.70 954.40 953.30 786.10 167.20
2 46320 1930 23 172.00 179.80 157.50 22.30 952.40 953.10 787.00 166.10
3 45643 1902 24 175.50 178.20 155.80 22.40 951.60 952.30 786.50 165.80
4 46367 1932 23 170.40 163.80 157.70 6.10 953.30 952.10 785.90 166.20
5 46606 1942 23 160.50 156.20 156.20 0.00 954.40 953.40 785.70 167.70
6 46806 1950 22 158.60 155.50 155.50 0.00 955.20 954.60 785.80 168.80
7 45760 1907 22 143.60 151.40 151.40 0.00 953.20 953.80 785.70 168.10
8 46434 1935 24 158.50 155.00 155.00 0.00 954.10 953.30 785.30 168.00
9 40849 1702 24 120.20 129.90 129.90 0.00 951.60 952.80 783.00 169.80
10 33292 1387 24 113.60 105.50 105.50 0.00 953.70 953.00 781.20 171.80
11 37718 1572 24 121.10 119.10 119.10 0.00 954.20 953.50 782.50 171.00
12 43441 1810 23 138.40 140.40 140.40 0.00 953.70 952.50 784.00 168.50
13 44323 1847 23 144.40 144.00 144.00 0.00 953.80 952.60 784.00 168.60
14 45272 1886 23 153.60 156.50 150.80 5.70 953.20 952.20 785.40 166.80
15 43766 1824 23 156.10 155.60 143.20 12.40 953.30 952.40 785.60 166.80
16 128.10 126.10 126.10 0.00 953.80 953.20 783.00 170.20
17 100.70 104.20 104.20 0.00 952.90 952.90 781.00 171.90
18 125.40 125.80 125.80 0.00 952.80 952.50 782.50 170.00
19 139.60 136.10 136.10 953.70 952.80 783.60 169.20
20 83.20 87.50 87.50 0.00 952.60 952.40 779.80 172.60
21 96.30 93.60 93.60 0.00 953.30 953.20 780.60 172.60
22 123.80 123.40 123.40 0.00 953.40 952.40 783.20 169.20
23
24
25
26
27
28
29
30
TOT659029  349        
AVG 43935 1831 23 138.69 138.49 135.19 3.46 953.39 952.92 783.97 168.95
MAX 46806   175.50 179.80 157.70 22.40 955.20 954.60 787.00 172.60
MIN 33292   83.20 87.50 87.50 0.00 951.60 952.10 779.80 165.80
BUILDING STRONG®