Chief Joseph Dam
Tuesday March 17, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 95.80 | 95.80 | 0.00 | 953.20 | 782.10 | 171.10 | 953.20 | 782.50 |
| 2 | 90.90 | 90.90 | 0.00 | 953.30 | 782.00 | 171.30 | 953.20 | 782.00 |
| 3 | 94.30 | 94.30 | 0.00 | 953.30 | 782.10 | 171.20 | 953.30 | 782.10 |
| 4 | 90.10 | 90.10 | 0.00 | 953.50 | 781.70 | 171.80 | 953.40 | 781.80 |
| 5 | 89.50 | 89.50 | 0.00 | 953.40 | 781.70 | 171.70 | 953.50 | 781.70 |
| 6 | 100.70 | 100.70 | 0.00 | 953.30 | 782.70 | 170.60 | 953.40 | 782.10 |
| 7 | 123.80 | 123.80 | 0.00 | 953.10 | 783.50 | 169.60 | 953.10 | 783.20 |
| 8 | 131.00 | 131.00 | 0.00 | 953.20 | 783.00 | 170.20 | 953.10 | 783.50 |
| 9 | 107.40 | 107.40 | 0.00 | 953.40 | 782.30 | 171.10 | 953.30 | 782.40 |
| 10 | 102.90 | 102.90 | 0.00 | 953.40 | 782.20 | 171.20 | 953.40 | 782.30 |
| 11 | 104.10 | 104.10 | 0.00 | 953.30 | 782.60 | 170.70 | 953.30 | 782.50 |
| 12 | 99.50 | 99.50 | 0.00 | 953.40 | 782.00 | 171.40 | 953.30 | 782.40 |
| 13 | 85.10 | 85.10 | 0.00 | 953.40 | 781.90 | 171.50 | 953.40 | 781.90 |
| 14 | 85.50 | 85.50 | 0.00 | 953.10 | 781.50 | 171.60 | 953.30 | 781.80 |
| 15 | 88.10 | 88.10 | 0.00 | 952.80 | 781.90 | 170.90 | 952.90 | 781.80 |
| 16 | 94.10 | 94.10 | 0.00 | 952.70 | 781.80 | 170.90 | 952.70 | 781.80 |
| 17 | 90.60 | 90.60 | 0.00 | 952.40 | 782.50 | 169.90 | 952.60 | 781.90 |
| 18 | 127.40 | 127.40 | 0.00 | 952.00 | 783.80 | 168.20 | 952.10 | 783.60 |
| 19 | 134.10 | 134.10 | 0.00 | 952.00 | 784.20 | 167.80 | 951.80 | 783.80 |
| 20 | 140.00 | 140.00 | 0.00 | 952.20 | 784.20 | 168.00 | 952.20 | 784.20 |
| 21 | 140.30 | 140.30 | 0.00 | 952.40 | 784.50 | 167.90 | 952.40 | 784.40 |
| 22 | 135.40 | 135.40 | 0.00 | 952.70 | 784.70 | 168.00 | 952.60 | 784.40 |
| 23 | 135.80 | 135.80 | 0.00 | 952.80 | 784.40 | 168.40 | 952.80 | 784.50 |
| 24 | 128.50 | 128.50 | 0.00 | 953.10 | 783.40 | 169.70 | 952.90 | 784.20 |
|
| AVG | 108.95 | 108.95 | 0.00 | 952.97 | 782.78 | 170.20 | 952.97 | 782.78 |
|
| MAX | 140.30 | 140.30 | 0.00 | 953.50 | 784.70 | 171.80 | 953.50 | 784.50 |
| MIN | 85.10 | 85.10 | 0.00 | 952.00 | 781.50 | 167.80 | 951.80 | 781.70 |