Chief Joseph Dam
Sunday December 21, 2025
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 112.10 | 112.10 | 0.00 | 953.60 | 783.10 | 170.50 | 953.60 | 783.10 |
| 2 | 111.20 | 111.20 | 0.00 | 953.50 | 783.10 | 170.40 | 953.50 | 783.10 |
| 3 | 106.40 | 106.40 | 0.00 | 953.50 | 782.60 | 170.90 | 953.50 | 782.80 |
| 4 | 99.50 | 99.50 | 0.00 | 953.50 | 782.10 | 171.40 | 953.50 | 782.30 |
| 5 | 93.70 | 93.70 | 0.00 | 953.50 | 781.20 | 172.30 | 953.50 | 781.60 |
| 6 | 95.80 | 95.80 | 0.00 | 953.50 | 781.60 | 171.90 | 953.50 | 781.40 |
| 7 | 108.40 | 108.40 | 0.00 | 953.40 | 781.90 | 171.50 | 953.40 | 781.70 |
| 8 | 119.50 | 119.50 | 0.00 | 953.50 | 781.70 | 171.80 | 953.10 | 782.20 |
| 9 | 113.80 | 113.80 | 0.00 | 953.60 | 781.60 | 172.00 | 953.50 | 781.60 |
| 10 | 114.20 | 114.20 | 0.00 | 953.60 | 782.00 | 171.60 | 953.60 | 781.60 |
| 11 | 122.20 | 122.20 | 0.00 | 953.40 | 782.50 | 170.90 | 953.50 | 782.30 |
| 12 | 123.80 | 123.80 | 0.00 | 953.30 | 782.80 | 170.50 | 953.40 | 782.50 |
| 13 | 123.70 | 123.70 | 0.00 | 953.40 | 783.20 | 170.20 | 953.30 | 782.90 |
| 14 | 127.50 | 127.50 | 0.00 | 953.20 | 783.40 | 169.80 | 953.30 | 783.30 |
| 15 | 129.60 | 129.60 | 0.00 | 953.00 | 784.20 | 168.80 | 953.10 | 783.80 |
| 16 | 132.90 | 132.90 | 0.00 | 952.80 | 785.00 | 167.80 | 952.90 | 784.50 |
| 17 | | | | | | | | |
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| AVG | 114.64 | 114.64 | 0.00 | 953.39 | 782.63 | 170.77 | 953.39 | 782.54 |
|
| MAX | 132.90 | 132.90 | 0.00 | 953.60 | 785.00 | 172.30 | 953.60 | 784.50 |
| MIN | 93.70 | 93.70 | 0.00 | 952.80 | 781.20 | 167.80 | 952.90 | 781.40 |