US Army Corps of Engineers

Chief Joseph Dam & Rufus Woods Lake

May 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 36985 1541 24 122.60 119.90 119.90 0.00 952.30 951.90 782.70 169.20
2 35158 1465 24 111.30 112.50 112.50 0.00 952.00 952.00 781.40 170.60
3 26753 1115 24 87.60 84.10 84.10 0.00 952.20 952.60 779.50 173.10
4 26753 1115 24 87.60 84.10 84.10 0.00 953.10 952.60 779.50 173.10
5 33633 1401 25 107.80 106.80 106.80 0.00 953.30 953.00 781.90 171.10
6 34312 1430 25 113.30 108.60 108.60 0.00 954.50 953.10 781.50 171.60
7 37033 1543 21 109.40 121.40 118.70 2.70 951.40 953.50 791.00 162.50
8 35040 1460 22 113.90 113.10 113.10 0.00 951.10 951.50 782.20 169.30
9 40824 1701 25 136.50 135.00 135.00 0.00 952.00 951.70 783.80 167.90
10 31777 1324 24 102.00 100.80 100.80 0.00 952.30 952.10 781.00 171.10
11 33949 1415 24 109.40 107.90 107.90 0.00 952.70 952.30 781.30 171.00
12 35579 1482 26 110.30 113.40 113.40 0.00 951.90 952.40 782.10 170.30
13 30851 1285 26 101.20 98.10 98.10 0.00 952.70 952.20 781.10 171.10
14 31432 1310 23 99.40 100.90 100.90 0.00 952.30 952.30 782.50 169.80
15 30825 1284 23 99.40 97.10 97.10 0.00 952.90 952.90 781.00 171.90
16 30422 1268 23 93.30 96.00 96.00 0.00 952.20 952.60 780.80 171.80
17 24267 1011 24 74.90 76.10 76.10 0.00 951.90 952.10 778.90 173.20
18 21368 890 25 67.20 67.20 67.20 0.00 951.90 951.90 779.50 172.40
19 31063 1294 26 100.00 98.50 98.50 0.00 952.30 951.70 780.90 170.80
20 30389 1266 26 96.40 96.80 96.80 0.00 952.20 952.40 781.30 171.10
21 29272 1220 26 94.20 92.30 92.30 0.00 952.70 952.30 781.40 170.90
22 30427 1268 25 94.40 95.90 95.90 0.00 952.30 952.50 780.80 171.70
23 27593 1150 26 88.70 86.00 86.00 0.00 953.00 952.80 779.40 173.40
24 28485 1187 24 89.30 90.10 90.10 0.00 952.80 952.50 780.90 171.60
25 71.10 71.50 71.50 0.00 952.70 952.30 779.30 173.00
26 71.90 76.50 76.50 0.00 951.50 952.20 780.70 171.50
27 111.50 106.10 106.10 0.00 952.90 952.10 782.00 170.10
28 98.40 101.50 101.50 0.00 952.10 952.00 781.60 170.40
29 89.40 89.40 89.40 0.00 952.10 952.20 780.80 171.40
30 108.90 109.30 109.30 0.00 952.00 951.70 782.40 169.30
31 92.30 92.70 92.70 0.00 951.90 951.80 780.60 171.20
TOT754190  585        
AVG 31425 1309 24 98.50 98.37 98.29 0.09 952.36 952.30 781.41 170.88
MAX 40824   136.50 135.00 135.00 2.70 954.50 953.50 791.00 173.40
MIN 21368   67.20 67.20 67.20 0.00 951.10 951.50 778.90 162.50