Chief Joseph Dam
Friday March 20, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 134.20 | 134.20 | 0.00 | 953.40 | 785.00 | 168.40 | 953.60 | 784.50 |
| 2 | 140.90 | 140.90 | 0.00 | 953.30 | 784.70 | 168.60 | 953.30 | 784.80 |
| 3 | 142.30 | 142.30 | 0.00 | 953.20 | 784.80 | 168.40 | 953.30 | 784.90 |
| 4 | 140.10 | 140.10 | 0.00 | 953.00 | 785.00 | 168.00 | 953.10 | 784.80 |
| 5 | 140.60 | 140.60 | 0.00 | 952.80 | 785.10 | 167.70 | 952.90 | 784.90 |
| 6 | 138.40 | 138.40 | 0.00 | 952.70 | 784.80 | 167.90 | 952.70 | 784.80 |
| 7 | 142.20 | 142.20 | 0.00 | 952.70 | 785.40 | 167.30 | 952.60 | 785.00 |
| 8 | 143.10 | 143.10 | 0.00 | 953.00 | 784.80 | 168.20 | 952.80 | 785.10 |
| 9 | 137.60 | 137.60 | 0.00 | 953.30 | 784.20 | 169.10 | 953.10 | 784.90 |
| 10 | 107.00 | 107.00 | 0.00 | 953.80 | 783.30 | 170.50 | 953.60 | 783.20 |
| 11 | 100.30 | 100.30 | 0.00 | 953.90 | 782.50 | 171.40 | 954.00 | 782.80 |
| 12 | 97.90 | 97.90 | 0.00 | 953.80 | 782.50 | 171.30 | 953.80 | 782.60 |
| 13 | 95.80 | 95.80 | 0.00 | 953.70 | 782.20 | 171.50 | 953.70 | 782.40 |
| 14 | 88.00 | 88.00 | 0.00 | 953.60 | 781.90 | 171.70 | 953.70 | 781.90 |
| 15 | 87.50 | 87.50 | 0.00 | 953.40 | 781.80 | 171.60 | 953.50 | 781.80 |
| 16 | 87.90 | 87.90 | 0.00 | 953.10 | 781.90 | 171.20 | 953.30 | 781.70 |
| 17 | 100.40 | 100.40 | 0.00 | 952.70 | 782.90 | 169.80 | 953.00 | 782.30 |
| 18 | 124.10 | 124.10 | 0.00 | 952.30 | 783.50 | 168.80 | 952.50 | 783.40 |
| 19 | 138.80 | 138.80 | 0.00 | 952.40 | 784.30 | 168.10 | 952.30 | 784.20 |
| 20 | 132.80 | 132.80 | 0.00 | 952.70 | 784.30 | 168.40 | 952.50 | 784.10 |
| 21 | 136.20 | 136.20 | 0.00 | 952.80 | 784.30 | 168.50 | 952.80 | 784.30 |
| 22 | 145.90 | 145.90 | 0.00 | 953.10 | 785.00 | 168.10 | 953.00 | 785.00 |
| 23 | 145.00 | 145.00 | 0.00 | 953.20 | 785.00 | 168.20 | 953.20 | 785.00 |
| 24 | 140.60 | 140.60 | 0.00 | 953.60 | 784.30 | 169.30 | 953.30 | 784.80 |
|
| AVG | 124.48 | 124.48 | 0.00 | 953.15 | 783.90 | 169.25 | 953.15 | 783.88 |
|
| MAX | 145.90 | 145.90 | 0.00 | 953.90 | 785.40 | 171.70 | 954.00 | 785.10 |
| MIN | 87.50 | 87.50 | 0.00 | 952.30 | 781.80 | 167.30 | 952.30 | 781.70 |