Chief Joseph Dam
Friday July 10, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 100.90 | 100.90 | 0.00 | 953.10 | 781.20 | 171.90 | 953.30 | 781.00 |
| 2 | 102.30 | 102.30 | 0.00 | 952.90 | 781.30 | 171.60 | 953.00 | 781.40 |
| 3 | 109.40 | 109.40 | 0.00 | 952.50 | 781.90 | 170.60 | 952.70 | 781.90 |
| 4 | 99.10 | 99.10 | 0.00 | 952.20 | 781.30 | 170.90 | 952.40 | 781.30 |
| 5 | 98.90 | 98.90 | 0.00 | 951.70 | 781.40 | 170.30 | 951.90 | 781.40 |
| 6 | 95.90 | 95.90 | 0.00 | 951.20 | 781.50 | 169.70 | 951.50 | 781.30 |
| 7 | 74.70 | 74.70 | 0.00 | 951.20 | 779.00 | 172.20 | 951.30 | 780.00 |
| 8 | 53.30 | 53.30 | 0.00 | 951.40 | 778.20 | 173.20 | 951.20 | 778.80 |
| 9 | 57.60 | 57.60 | 0.00 | 951.50 | 779.30 | 172.20 | 951.40 | 779.20 |
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| AVG | 88.01 | 88.01 | 0.00 | 951.97 | 780.57 | 171.40 | 952.08 | 780.70 |
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| MAX | 109.40 | 109.40 | 0.00 | 953.10 | 781.90 | 173.20 | 953.30 | 781.90 |
| MIN | 53.30 | 53.30 | 0.00 | 951.20 | 778.20 | 169.70 | 951.20 | 778.80 |