Chief Joseph Dam
Thursday August 6, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 86.70 | 86.70 | 0.00 | 953.40 | 780.80 | 172.60 | 953.50 | 781.10 |
| 2 | 74.00 | 74.00 | 0.00 | 953.50 | 780.10 | 173.40 | 953.50 | 780.60 |
| 3 | 63.00 | 63.00 | 0.00 | 953.40 | 780.50 | 172.90 | 953.50 | 780.30 |
| 4 | 54.40 | 54.40 | 0.00 | 953.10 | 780.40 | 172.70 | 953.20 | 780.40 |
| 5 | 54.30 | 54.30 | 0.00 | 953.00 | 780.60 | 172.40 | 953.00 | 780.50 |
| 6 | 56.00 | 56.00 | 0.00 | 953.00 | 780.52 | 172.48 | 953.00 | 780.70 |
| 7 | 50.20 | 50.20 | 0.00 | 952.90 | 780.90 | 172.00 | 953.10 | 780.40 |
| 8 | 59.80 | 59.80 | 0.00 | 952.90 | 780.60 | 172.30 | 952.90 | 780.80 |
| 9 | 61.80 | 61.80 | 0.00 | 952.90 | 780.80 | 172.10 | 952.90 | 780.70 |
| 10 | 69.30 | 69.30 | 0.00 | 952.90 | 781.20 | 171.70 | 952.80 | 781.10 |
| 11 | 80.60 | 80.60 | 0.00 | 952.80 | 781.50 | 171.30 | 952.80 | 781.50 |
| 12 | 85.90 | 85.90 | 0.00 | 952.70 | 781.90 | 170.80 | 952.80 | 781.70 |
| 13 | 97.30 | 97.30 | 0.00 | 954.60 | 782.40 | 172.20 | 952.70 | 782.10 |
| 14 | 119.60 | 119.60 | 0.00 | 952.30 | 783.10 | 169.20 | 952.40 | 783.10 |
| 15 | 127.30 | 127.30 | 0.00 | 952.30 | 783.30 | 169.00 | 952.30 | 783.40 |
| 16 | 130.60 | 130.60 | 0.00 | 952.30 | 783.60 | 168.70 | 952.30 | 783.70 |
| 17 | 129.60 | 129.60 | 0.00 | 952.40 | 783.70 | 168.70 | 952.40 | 783.70 |
| 18 | 131.70 | 131.70 | 0.00 | 952.50 | 784.00 | 168.50 | 952.50 | 783.70 |
| 19 | 131.60 | 131.60 | 0.00 | 952.80 | 783.80 | 169.00 | 952.70 | 783.80 |
| 20 | 129.90 | 129.90 | 0.00 | 953.10 | 783.70 | 169.40 | 953.00 | 783.70 |
| 21 | 128.30 | 128.30 | 0.00 | 953.50 | 783.70 | 169.80 | 953.30 | 783.70 |
| 22 | 128.80 | 128.80 | 0.00 | 953.50 | 783.50 | 170.00 | 953.50 | 783.70 |
| 23 | 123.90 | 123.90 | 0.00 | 953.40 | 783.40 | 170.00 | 953.50 | 783.40 |
| 24 | 120.10 | 120.10 | 0.00 | 953.00 | 783.20 | 169.80 | 953.30 | 783.30 |
|
| AVG | 95.61 | 95.61 | 0.00 | 953.01 | 782.13 | 170.87 | 952.95 | 782.13 |
|
| MAX | 131.70 | 131.70 | 0.00 | 954.60 | 784.00 | 173.40 | 953.50 | 783.80 |
| MIN | 50.20 | 50.20 | 0.00 | 952.30 | 780.10 | 168.50 | 952.30 | 780.30 |