Chief Joseph Dam
Tuesday January 27, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 150.40 | 150.40 | 0.00 | 952.90 | 784.20 | 168.70 | 953.00 | 784.10 |
| 2 | 145.70 | 145.70 | 0.00 | 952.80 | 783.90 | 168.90 | 952.90 | 784.00 |
| 3 | 149.10 | 149.10 | 0.00 | 952.50 | 784.20 | 168.30 | 952.60 | 784.20 |
| 4 | 150.00 | 150.00 | 0.00 | 952.30 | 784.40 | 167.90 | 952.40 | 784.40 |
| 5 | 152.10 | 152.10 | 0.00 | 952.00 | 784.40 | 167.60 | 952.20 | 784.40 |
| 6 | 152.50 | 152.50 | 0.00 | 951.80 | 784.50 | 167.30 | 951.90 | 784.50 |
| 7 | 152.40 | 152.40 | 0.00 | 951.70 | 784.40 | 167.30 | 951.70 | 784.50 |
| 8 | 143.50 | 143.50 | 0.00 | 952.00 | 783.00 | 169.00 | 951.80 | 784.10 |
| 9 | 136.50 | 136.50 | 0.00 | 952.30 | 783.20 | 169.10 | 952.10 | 783.70 |
| 10 | 115.60 | 115.60 | 0.00 | 952.60 | 782.30 | 170.30 | 952.50 | 782.60 |
| 11 | 100.30 | 100.30 | 0.00 | 953.00 | 781.60 | 171.40 | 952.90 | 781.70 |
| 12 | 101.60 | 101.60 | 0.00 | 953.20 | 781.50 | 171.70 | 953.10 | 781.70 |
| 13 | 106.50 | 106.50 | 0.00 | 953.30 | 781.40 | 171.90 | 953.20 | 781.70 |
| 14 | 102.10 | 102.10 | 0.00 | 953.60 | 781.00 | 172.60 | 953.50 | 781.10 |
| 15 | 100.70 | 100.70 | 0.00 | 953.70 | 780.80 | 172.90 | 953.70 | 780.90 |
| 16 | 107.60 | 107.60 | 0.00 | 953.50 | 781.90 | 171.60 | 953.70 | 780.90 |
| 17 | 142.20 | 142.20 | 0.00 | 953.00 | 781.90 | 171.10 | 953.20 | 782.90 |
| 18 | 142.70 | 142.70 | 0.00 | 953.30 | 782.50 | 170.80 | 953.10 | 782.70 |
| 19 | 143.80 | 143.80 | 0.00 | 953.60 | 782.70 | 170.90 | 953.40 | 782.70 |
| 20 | 145.70 | 145.70 | 0.00 | 953.80 | 782.70 | 171.10 | 953.70 | 782.80 |
| 21 | 142.60 | 142.60 | 0.00 | 954.00 | 782.40 | 171.60 | 953.90 | 782.60 |
| 22 | 138.80 | 138.80 | 0.00 | 954.10 | 782.20 | 171.90 | 954.10 | 782.40 |
| 23 | 138.80 | 138.80 | 0.00 | 954.00 | 782.20 | 171.80 | 954.10 | 782.40 |
| 24 | 131.40 | 131.40 | 0.00 | 954.00 | 782.10 | 171.90 | 954.00 | 782.10 |
|
| AVG | 133.03 | 133.03 | 0.00 | 953.04 | 782.73 | 170.32 | 953.03 | 782.88 |
|
| MAX | 152.50 | 152.50 | 0.00 | 954.10 | 784.50 | 172.90 | 954.10 | 784.50 |
| MIN | 100.30 | 100.30 | 0.00 | 951.70 | 780.80 | 167.30 | 951.70 | 780.90 |