Chief Joseph Dam
Saturday August 1, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 122.30 | 122.30 | 0.00 | 954.00 | 783.10 | 170.90 | 954.30 | 783.10 |
| 2 | 136.10 | 136.10 | 0.00 | 953.70 | 783.50 | 170.20 | 953.20 | 783.80 |
| 3 | 125.30 | 125.30 | 0.00 | 953.30 | 783.40 | 169.90 | 953.50 | 783.30 |
| 4 | 112.60 | 112.60 | 0.00 | 952.70 | 782.30 | 170.40 | 953.00 | 782.90 |
| 5 | 75.90 | 75.90 | 0.00 | 952.60 | 781.40 | 171.20 | 952.70 | 781.20 |
| 6 | 73.20 | 73.20 | 0.00 | 952.60 | 780.60 | 172.00 | 952.50 | 781.10 |
| 7 | 66.60 | 66.60 | 0.00 | 952.70 | 779.80 | 172.90 | 952.70 | 780.10 |
| 8 | 66.30 | 66.30 | 0.00 | 952.70 | 779.20 | 173.50 | 952.70 | 779.70 |
| 9 | 56.30 | 56.30 | 0.00 | 952.70 | 778.60 | 174.10 | 952.70 | 778.80 |
| 10 | 50.00 | 50.00 | 0.00 | 952.90 | 778.40 | 174.50 | 952.80 | 778.50 |
| 11 | 51.90 | 51.90 | 0.00 | 952.90 | 778.30 | 174.60 | 952.90 | 778.40 |
| 12 | 64.80 | 64.80 | 0.00 | 952.90 | 779.00 | 173.90 | 952.90 | 778.90 |
| 13 | 78.90 | 78.90 | 0.00 | 953.00 | 779.50 | 173.50 | 952.90 | 779.40 |
| 14 | 85.40 | 85.40 | 0.00 | 953.00 | 780.40 | 172.60 | 953.00 | 780.10 |
| 15 | 90.60 | 90.60 | 0.00 | 953.00 | 780.70 | 172.30 | 953.00 | 780.40 |
| 16 | 103.50 | 103.50 | 0.00 | 952.80 | 781.60 | 171.20 | 952.80 | 781.40 |
| 17 | 100.80 | 100.80 | 0.00 | 953.00 | 782.00 | 171.00 | 952.90 | 781.60 |
| 18 | 97.60 | 97.60 | 0.00 | 953.20 | 782.40 | 170.80 | 953.10 | 781.80 |
| 19 | 115.50 | 115.50 | 0.00 | 953.00 | 782.90 | 170.10 | 953.00 | 782.80 |
| 20 | 116.20 | 116.20 | 0.00 | 953.10 | 783.10 | 170.00 | 953.00 | 783.00 |
| 21 | 103.70 | 103.70 | 0.00 | 953.40 | 781.80 | 171.60 | 953.30 | 782.20 |
| 22 | 112.40 | 112.40 | 0.00 | 953.20 | 783.00 | 170.20 | 953.30 | 782.90 |
| 23 | 118.10 | 118.10 | 0.00 | 952.90 | 783.00 | 169.90 | 953.00 | 783.00 |
| 24 | 108.10 | 108.10 | 0.00 | 952.90 | 782.80 | 170.10 | 952.90 | 783.00 |
|
| AVG | 93.00 | 93.00 | 0.00 | 953.01 | 781.28 | 171.72 | 953.00 | 781.31 |
|
| MAX | 136.10 | 136.10 | 0.00 | 954.00 | 783.50 | 174.60 | 954.30 | 783.80 |
| MIN | 50.00 | 50.00 | 0.00 | 952.60 | 778.30 | 169.90 | 952.50 | 778.40 |