US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

September 2021

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 29813 1242 25 88.70 92.70 92.70 0.00 954.00 954.00 781.50 172.50
2 24442 1018 25 72.40 75.90 75.90 0.00 953.10 953.60 780.20 173.40
3 23557 982 24 69.90 73.00 73.00 0.00 952.30 952.60 779.80 172.80
4 17840 743 25 55.40 55.40 55.40 0.00 952.30 952.23 779.50 172.73
5 16877 703 26 56.20 52.30 52.30 0.00 953.30 952.70 780.10 172.60
6 19156 798 26 62.20 59.10 59.10 0.00 954.10 953.70 780.30 173.40
7 19520 813 27 58.20 60.20 60.20 0.00 953.60 954.40 780.10 174.30
8 16791 700 27 49.40 52.10 52.10 0.00 952.90 953.20 779.10 174.10
9 17758 740 27 52.10 55.20 55.20 0.00 952.10 952.70 779.20 173.50
10 16749 698 28 59.40 52.00 52.00 0.00 954.00 953.10 780.00 173.10
11 19205 800 28 58.50 59.70 59.70 0.00 953.70 953.90 780.60 173.30
12 13702 571 28 42.20 42.60 42.60 0.00 953.60 953.40 779.30 174.10
13 19923 830 27 57.70 62.00 62.00 0.00 952.50 953.20 779.90 173.30
14 17424 726 26 55.90 54.40 54.40 0.00 952.90 952.80 780.60 172.20
15 17161 715 26 56.10 53.40 53.40 0.00 953.60 953.30 780.50 172.80
16 19813 826 27 63.60 61.60 61.60 0.00 954.10 953.60 780.50 173.10
17 18458 769 26 56.70 57.10 57.10 0.00 954.00 953.70 780.10 173.60
18 15652 652 27 46.40 48.40 48.40 0.00 953.50 954.00 779.40 174.60
19 14810 617 27 44.20 45.80 45.80 0.00 953.10 953.40 779.80 173.60
20 17730 739 28 56.30 54.70 54.70 0.00 953.50 953.70 780.10 173.60
21 67.00 65.80 65.80 0.00 953.80 953.40 780.60 172.80
22 59.70 65.90 65.90 0.00 952.20 953.00 780.90 172.10
23 71.40 67.90 67.90 0.00 953.10 952.50 781.00 171.50
24 66.70 69.80 69.80 0.00 952.30 952.80 780.50 172.30
25 54.70 52.00 52.00 0.00 953.00 952.30 779.60 172.70
26 53.00 47.90 47.90 0.00 954.30 953.30 778.80 174.50
27 58.00 60.00 60.00 0.00 953.80 953.80 779.40 174.40
28
29
30
TOT376381  530        
AVG 18819 784 26 58.96 59.14 59.14 0.00 953.29 953.27 780.05 173.22
MAX 29813   88.70 92.70 92.70 0.00 954.30 954.40 781.50 174.60
MIN 13702   42.20 42.60 42.60 0.00 952.10 952.23 778.80 171.50