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 40395 1683 34 124.70 128.90 128.90 0.00 951.80 951.90 783.20 168.70
10 39676 1653 34 128.80 126.10 126.10 0.00 952.50 952.10 783.80 168.30
11 38699 1612 35 119.10 121.00 121.00 0.00 952.00 952.50 782.50 170.00
12 39358 1640 35 123.90 123.50 123.50 0.00 952.20 952.10 782.50 169.60
13 39123 1630 34 124.40 122.90 122.90 0.00 952.50 952.20 782.30 169.90
14 34836 1452 32 113.70 110.60 110.60 0.00 953.30 952.70 781.30 171.40
15 38082 1587 32 117.30 121.90 121.90 0.00 952.10 952.90 782.00 170.90
16 42552 1773 33 146.10 139.50 139.50 0.00 953.80 952.80 782.80 170.00
17 44162 1840 34 136.80 143.40 143.40 0.00 952.10 952.90 783.40 169.50
18 40221 1676 35 133.00 128.00 128.00 0.00 953.40 952.30 782.00 170.30
19 43055 1794 37 137.50 139.50 139.50 0.00 952.90 953.00 784.00 169.00
20 45564 1898 38 155.60 152.50 152.50 0.00 953.70 953.70 785.80 167.90
21 44432 1851 34 142.80 147.80 147.80 0.00 952.40 952.90 785.50 167.40
22 44876 1870 34 154.10 149.10 149.10 0.00 953.70 953.20 785.60 167.60
23 44974 1874 32 149.50 147.90 147.90 0.00 954.10 953.60 785.50 168.10
24 45203 1883 33 144.80 149.10 149.10 0.00 953.00 953.80 785.50 168.30
25 42093 1754 33 133.20 137.20 137.20 0.00 952.10 952.60 785.00 167.60
26 39001 1625 31 126.80 125.30 125.30 0.00 952.50 952.40 784.00 168.40
27 37341 1556 31 119.90 119.10 119.10 0.00 952.70 952.40 783.30 169.10
28 41034 1710 30 132.40 132.40 132.40 0.00 952.70 952.60 784.60 168.00
TOT1117101  934        
AVG 39896 1662 33 127.88 127.92 127.92 0.00 952.74 952.65 783.03 169.62
MAX 45564   155.60 152.50 152.50 0.00 954.10 953.80 785.80 172.60
MIN 33347   104.60 103.30 103.30 0.00 951.80 951.90 779.90 167.40
BUILDING STRONG®