Chief Joseph Dam
Monday July 6, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 105.90 | 105.90 | 0.00 | 954.70 | 780.60 | 174.10 | 954.70 | 780.90 |
| 2 | 98.50 | 98.50 | 0.00 | 954.60 | 780.20 | 174.40 | 954.70 | 780.30 |
| 3 | 98.10 | 98.10 | 0.00 | 954.40 | 780.00 | 174.40 | 954.50 | 780.20 |
| 4 | 93.90 | 93.90 | 0.00 | 954.20 | 780.40 | 173.80 | 954.30 | 780.10 |
| 5 | 99.40 | 99.40 | 0.00 | 953.90 | 780.60 | 173.30 | 954.00 | 780.60 |
| 6 | 105.30 | 105.30 | 0.00 | 953.60 | 781.80 | 171.80 | 953.80 | 781.30 |
| 7 | 106.60 | 106.60 | 0.00 | 953.40 | 781.70 | 171.70 | 953.50 | 781.80 |
| 8 | 98.10 | 98.10 | 0.00 | 953.20 | 781.70 | 171.50 | 953.30 | 781.50 |
| 9 | 96.80 | 96.80 | 0.00 | 952.90 | 782.00 | 170.90 | 953.00 | 781.90 |
| 10 | 96.00 | 96.00 | 0.00 | 952.70 | 781.90 | 170.80 | 952.80 | 781.90 |
| 11 | 88.80 | 88.80 | 0.00 | 952.70 | 781.50 | 171.20 | 952.70 | 781.50 |
| 12 | 91.00 | 91.00 | 0.00 | 952.40 | 781.20 | 171.20 | 952.50 | 781.40 |
| 13 | 87.10 | 87.10 | 0.00 | 952.50 | 780.80 | 171.70 | 952.40 | 780.90 |
| 14 | 86.40 | 86.40 | 0.00 | 952.40 | 780.80 | 171.60 | 952.50 | 780.80 |
| 15 | 94.70 | 94.70 | 0.00 | 952.30 | 781.30 | 171.00 | 952.40 | 781.10 |
| 16 | 106.30 | 106.30 | 0.00 | 952.20 | 781.20 | 171.00 | 952.20 | 781.40 |
| 17 | 112.40 | 112.40 | 0.00 | 952.30 | 781.60 | 170.70 | 952.20 | 781.60 |
| 18 | 126.40 | 126.40 | 0.00 | 952.30 | 782.20 | 170.10 | 952.20 | 782.10 |
| 19 | 126.00 | 126.00 | 0.00 | 952.40 | 782.30 | 170.10 | 952.40 | 781.90 |
| 20 | 142.70 | 142.70 | 0.00 | 952.40 | 782.90 | 169.50 | 952.30 | 782.90 |
| 21 | 143.00 | 143.00 | 0.00 | 952.70 | 782.40 | 170.30 | 952.50 | 782.80 |
| 22 | 119.50 | 119.50 | 0.00 | 952.90 | 781.30 | 171.60 | 952.90 | 781.30 |
| 23 | 121.40 | 121.40 | 0.00 | 952.80 | 781.00 | 171.80 | 952.90 | 781.40 |
| 24 | 114.80 | 114.80 | 0.00 | 952.50 | 781.10 | 171.40 | 952.70 | 780.90 |
|
| AVG | 106.63 | 106.63 | 0.00 | 953.02 | 781.35 | 171.66 | 953.06 | 781.35 |
|
| MAX | 143.00 | 143.00 | 0.00 | 954.70 | 782.90 | 174.40 | 954.70 | 782.90 |
| MIN | 86.40 | 86.40 | 0.00 | 952.20 | 780.00 | 169.50 | 952.20 | 780.10 |