US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

March 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 36880 1537 32 119.20 118.00 118.00 0.00 953.00 952.90 783.50 169.40
2 32551 1356 30 103.70 103.30 103.30 0.00 953.10 953.20 782.20 171.00
3 37256 1552 29 117.30 117.30 117.30 0.00 953.10 952.80 781.30 171.50
4 36676 1528 28 117.90 115.20 115.20 0.00 953.80 952.90 782.40 170.50
5 40983 1708 28 125.40 131.20 131.20 0.00 952.30 953.20 784.10 169.10
6 40807 1700 26 129.20 129.20 129.20 0.00 952.30 953.10 784.20 168.90
7 33372 1390 26 104.30 105.80 105.80 0.00 951.90 952.20 782.30 169.90
8 31225 1301 25 102.00 98.50 98.50 0.00 952.70 952.50 781.20 171.30
9 39514 1646 28 128.90 126.60 126.60 0.00 953.50 952.60 783.80 168.80
10 41963 1748 30 129.80 137.10 137.10 0.00 951.40 952.70 784.70 168.00
11 39546 1648 31 129.00 125.90 125.90 0.00 952.10 952.20 783.90 168.30
12 38377 1599 29 123.10 122.30 122.30 0.00 952.70 952.40 783.90 168.50
13 44495 1854 30 141.40 144.10 144.10 0.00 951.80 952.30 785.20 167.10
14 34669 1445 32 112.40 110.10 110.10 0.00 953.40 952.10 782.70 169.40
15 37909 1580 32 124.20 120.70 120.70 0.00 953.20 953.10 782.90 170.20
16 110.80 110.80 110.80 0.00 953.20 953.00 783.20 169.80
17 108.20 109.20 109.20 0.00 953.40 953.00 782.80 170.20
18 105.10 102.00 102.00 0.00 953.90 953.00 782.40 170.60
19 115.30 115.30 115.30 0.00 953.40 953.30 783.30 170.00
20 123.30 124.50 124.50 0.00 954.00 953.20 783.90 169.30
21 110.50 115.50 115.50 0.00 952.30 952.70 783.40 169.30
22 128.90 123.10 123.10 0.00 953.50 952.50 783.70 168.80
23 953.10
24
25
26
27
28
29
30
31
TOT566223  437        
AVG 37748 1573 29 118.63 118.44 118.44 0.00 952.92 952.77 783.23 169.54
MAX 44495   141.40 144.10 144.10 0.00 954.00 953.30 785.20 171.50
MIN 31225   102.00 98.50 98.50 0.00 951.40 952.10 781.20 167.10
BUILDING STRONG®