Chief Joseph Dam
Friday June 5, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 151.30 | 151.30 | 0.00 | 953.50 | 785.20 | 168.30 | 953.40 | 785.10 |
| 2 | 154.50 | 154.50 | 0.00 | 953.50 | 785.30 | 168.20 | 953.50 | 785.20 |
| 3 | 153.50 | 153.50 | 0.00 | 953.30 | 785.30 | 168.00 | 953.40 | 785.30 |
| 4 | 154.90 | 154.90 | 0.00 | 953.10 | 785.20 | 167.90 | 953.20 | 785.30 |
| 5 | 153.80 | 153.80 | 0.00 | 953.00 | 785.30 | 167.70 | 953.10 | 785.20 |
| 6 | 155.00 | 155.00 | 0.00 | 952.90 | 785.40 | 167.50 | 953.00 | 785.30 |
| 7 | 156.10 | 156.10 | 0.00 | 953.00 | 785.60 | 167.40 | 952.90 | 785.40 |
| 8 | 157.00 | 157.00 | 0.00 | 953.20 | 785.60 | 167.60 | 953.10 | 785.60 |
| 9 | 156.90 | 156.90 | 0.00 | 953.00 | 785.70 | 167.30 | 953.20 | 785.60 |
| 10 | 157.40 | 157.40 | 0.00 | 953.00 | 785.80 | 167.20 | 953.00 | 785.70 |
| 11 | 157.80 | 157.80 | 0.00 | 953.00 | 786.10 | 166.90 | 953.00 | 785.90 |
| 12 | 158.10 | 158.10 | 0.00 | 953.00 | 786.00 | 167.00 | 953.00 | 786.00 |
| 13 | 157.90 | 157.90 | 0.00 | 952.90 | 786.10 | 166.80 | 953.00 | 786.00 |
| 14 | 157.90 | 157.90 | 0.00 | 953.10 | 786.00 | 167.10 | 953.00 | 786.10 |
| 15 | 157.90 | 157.90 | 0.00 | 953.20 | 786.10 | 167.10 | 953.20 | 786.10 |
| 16 | 157.60 | 157.60 | 0.00 | 953.20 | 786.00 | 167.20 | 953.20 | 786.00 |
| 17 | 157.30 | 157.30 | 0.00 | 953.40 | 786.10 | 167.30 | 953.30 | 786.00 |
| 18 | 156.70 | 156.70 | 0.00 | 953.60 | 785.80 | 167.80 | 953.40 | 785.90 |
| 19 | | | | | | | | |
| 20 | | | | | | | | |
| 21 | | | | | | | | |
| 22 | | | | | | | | |
| 23 | | | | | | | | |
| 24 | | | | | | | | |
|
| AVG | 156.20 | 156.20 | 0.00 | 953.16 | 785.70 | 167.46 | 953.16 | 785.65 |
|
| MAX | 158.10 | 158.10 | 0.00 | 953.60 | 786.10 | 168.30 | 953.50 | 786.10 |
| MIN | 151.30 | 151.30 | 0.00 | 952.90 | 785.20 | 166.80 | 952.90 | 785.10 |