Chief Joseph Dam
Saturday October 17, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 51.70 | 51.70 | 0.00 | 952.00 | 779.10 | 172.90 | 952.00 | 779.00 |
| 2 | 49.10 | 49.10 | 0.00 | 951.80 | 778.80 | 173.00 | 951.90 | 779.00 |
| 3 | 38.50 | 38.50 | 0.00 | 951.90 | 778.60 | 173.30 | 951.90 | 778.60 |
| 4 | 31.50 | 31.50 | 0.00 | 952.00 | 778.70 | 173.30 | 952.00 | 778.70 |
| 5 | 32.40 | 32.40 | 0.00 | 951.90 | 778.80 | 173.10 | 951.90 | 778.80 |
| 6 | 34.70 | 34.70 | 0.00 | 951.90 | 778.40 | 173.50 | 951.90 | 778.60 |
| 7 | 25.30 | 25.30 | 0.00 | 952.20 | 778.50 | 173.70 | 952.10 | 778.40 |
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| AVG | 37.60 | 37.60 | 0.00 | 951.96 | 778.70 | 173.26 | 951.96 | 778.73 |
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| MAX | 51.70 | 51.70 | 0.00 | 952.20 | 779.10 | 173.70 | 952.10 | 779.00 |
| MIN | 25.30 | 25.30 | 0.00 | 951.80 | 778.40 | 172.90 | 951.90 | 778.40 |