US Army Corps of Engineers

Chief Joseph Dam

Thursday September 17, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadAverage Forebay ElevationAverage Tailwater Elevation
1 55.00 55.00 0.00 953.20 779.50 173.70 953.10 779.10
2 48.30 48.30 0.00 952.90 779.00 173.90 953.00 779.20
3 49.00 49.00 0.00 952.70 779.50 173.20 952.80 779.40
4 42.20 42.20 0.00 952.70 779.30 173.40 952.70 779.30
5 41.10 41.10 0.00 952.60 779.50 173.10 952.60 779.40
6 38.70 38.70 0.00 952.40 780.00 172.40 952.50 779.50
7 46.40 46.40 0.00 952.40 780.10 172.30 952.30 779.70
8 49.80 49.80 0.00 952.50 778.90 173.60 952.50 779.60
9 34.80 34.80 0.00 952.80 779.10 173.70 952.70 779.10
10 39.50 39.50 0.00 952.50 779.90 172.60 952.70 779.50
11 51.70 51.70 0.00 952.30 779.70 172.60 952.40 779.70
12 56.30 56.30 0.00 952.60 779.90 172.70 952.50 780.10
13 51.40 51.40 0.00 952.50 780.10 172.40 952.60 780.00
14 52.70 52.70 0.00 952.40 780.30 172.10 952.50 780.10
15 55.60 55.60 0.00 952.60 780.60 172.00 952.50 780.40
16 58.60 58.60 0.00 952.70 780.60 172.10 952.70 780.60
17 72.90 72.90 0.00 952.60 781.10 171.50 952.60 781.10
18 72.40 72.40 0.00 952.70 780.40 172.30 952.60 780.50
19 76.40 76.40 0.00 952.80 780.60 172.20 952.80 780.60
20 71.00 71.00 0.00 952.90 779.60 173.30 952.90 780.20
21 61.40 61.40 0.00 953.20 779.50 173.70 953.10 779.50
22 54.60 54.60 0.00 953.20 778.60 174.60 953.20 779.00
23 44.20 44.20 0.00 953.30 778.60 174.70 953.30 778.50
24 57.20 57.20 0.00 953.10 779.10 174.00 953.20 779.50
AVG 53.38 53.38 0.00 952.73 779.73 173.00 952.74 779.73
MAX 76.40 76.40 0.00 953.30 781.10 174.70 953.30 781.10
MIN 34.80 34.80 0.00 952.30 778.60 171.50 952.30 778.50
BUILDING STRONG®