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 39880 1662 23 128.10 126.10 126.10 0.00 953.80 953.20 783.00 170.20
17 33285 1387 24 100.70 104.20 104.20 0.00 952.90 952.90 781.00 171.90
18 39490 1645 23 125.40 125.80 125.80 0.00 952.80 952.50 782.50 170.00
19 42382 1766 23 139.60 136.10 136.10 953.70 952.80 783.60 169.20
20 28068 1170 24 83.20 87.50 87.50 0.00 952.60 952.40 779.80 172.60
21 30042 1252 24 96.30 93.60 93.60 0.00 953.30 953.20 780.60 172.60
22 38923 1622 24 123.80 123.40 123.40 0.00 953.40 952.40 783.20 169.20
23 40421 1684 24 127.90 127.50 127.50 0.00 953.50 952.70 782.30 170.40
24 39816 1659 24 128.30 124.80 124.80 0.00 954.40 952.70 782.00 170.70
25 46393 1933 23 123.60 152.90 152.90 0.00 952.00 952.60 784.70 167.90
26 42862 1786 23 140.90 137.80 137.80 0.00 952.80 952.20 783.50 168.70
27 29645 1235 24 94.60 92.30 92.30 0.00 953.40 953.30 781.20 172.10
28 33500 1396 24 104.80 105.20 105.20 0.00 953.30 953.20 782.10 171.10
29 39125 1630 23 122.40 124.00 124.00 0.00 952.90 952.80 783.00 169.80
30 41280 1720 23 134.00 130.50 130.50 0.00 953.80 952.90 782.60 170.30
TOT1224141  702        
AVG 40805 1700 23 134.26 134.72 132.30 2.50 953.36 952.89 783.63 169.26
MAX 46806   175.50 179.80 157.70 22.40 955.20 954.60 787.00 172.60
MIN 28068   83.20 87.50 87.50 0.00 951.60 952.10 779.80 165.80
BUILDING STRONG®