Chief Joseph Dam
Sunday January 25, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 152.10 | 152.10 | 0.00 | 953.30 | 785.50 | 167.80 | 953.30 | 785.50 |
| 2 | 152.40 | 152.40 | 0.00 | 953.40 | 785.50 | 167.90 | 953.30 | 785.50 |
| 3 | 152.00 | 152.00 | 0.00 | 953.40 | 785.50 | 167.90 | 953.40 | 785.50 |
| 4 | 152.10 | 152.10 | 0.00 | 953.50 | 785.50 | 168.00 | 953.40 | 785.50 |
| 5 | 152.30 | 152.30 | 0.00 | 953.70 | 785.40 | 168.30 | 953.60 | 785.50 |
| 6 | 152.20 | 152.20 | 0.00 | 953.70 | 785.40 | 168.30 | 953.70 | 785.40 |
| 7 | 151.70 | 151.70 | 0.00 | 953.70 | 785.40 | 168.30 | 953.70 | 785.40 |
| 8 | 150.90 | 150.90 | 0.00 | 953.70 | 785.40 | 168.30 | 953.60 | 785.40 |
| 9 | 150.90 | 150.90 | 0.00 | 953.80 | 785.40 | 168.40 | 953.80 | 785.40 |
| 10 | 151.50 | 151.50 | 0.00 | 953.80 | 785.40 | 168.40 | 953.80 | 785.40 |
| 11 | 150.80 | 150.80 | 0.00 | 953.70 | 785.40 | 168.30 | 953.80 | 785.40 |
| 12 | 144.20 | 144.20 | 0.00 | 953.80 | 784.80 | 169.00 | 953.80 | 785.10 |
| 13 | 136.00 | 136.00 | 0.00 | 953.80 | 784.80 | 169.00 | 953.80 | 784.80 |
| 14 | 141.10 | 141.10 | 0.00 | 953.40 | 785.10 | 168.30 | 953.50 | 785.00 |
| 15 | 138.30 | 138.30 | 0.00 | 953.10 | 784.90 | 168.20 | 953.30 | 784.90 |
| 16 | 148.00 | 148.00 | 0.00 | 952.60 | 785.50 | 167.10 | 952.80 | 785.30 |
| 17 | 149.80 | 149.80 | 0.00 | 952.00 | 785.60 | 166.40 | 952.30 | 785.40 |
| 18 | 148.50 | 148.50 | 0.00 | 951.80 | 785.10 | 166.70 | 951.80 | 785.40 |
| 19 | 141.10 | 141.10 | 0.00 | 952.00 | 785.10 | 166.90 | 951.90 | 785.10 |
| 20 | 139.00 | 139.00 | 0.00 | 952.10 | 784.90 | 167.20 | 952.10 | 784.90 |
| 21 | 150.50 | 150.50 | 0.00 | 952.00 | 785.30 | 166.70 | 952.00 | 785.30 |
| 22 | 150.10 | 150.10 | 0.00 | 952.10 | 785.10 | 167.00 | 952.10 | 785.20 |
| 23 | 142.70 | 142.70 | 0.00 | 952.30 | 784.30 | 168.00 | 952.20 | 784.80 |
| 24 | 128.60 | 128.60 | 0.00 | 952.40 | 783.90 | 168.50 | 952.40 | 784.10 |
|
| AVG | 146.95 | 146.95 | 0.00 | 953.05 | 785.17 | 167.87 | 953.06 | 785.22 |
|
| MAX | 152.40 | 152.40 | 0.00 | 953.80 | 785.60 | 169.00 | 953.80 | 785.50 |
| MIN | 128.60 | 128.60 | 0.00 | 951.80 | 783.90 | 166.40 | 951.80 | 784.10 |