Chief Joseph Dam
Friday June 19, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 149.70 | 149.70 | 0.00 | 952.90 | 784.60 | 168.30 | 952.80 | 784.70 |
| 2 | 151.40 | 151.40 | 0.00 | 953.00 | 784.60 | 168.40 | 952.90 | 784.60 |
| 3 | 145.30 | 145.30 | 0.00 | 953.00 | 784.30 | 168.70 | 953.00 | 784.40 |
| 4 | 144.80 | 144.80 | 0.00 | 952.90 | 784.60 | 168.30 | 953.00 | 784.50 |
| 5 | 150.60 | 150.60 | 0.00 | 952.60 | 785.00 | 167.60 | 952.70 | 785.00 |
| 6 | 146.80 | 146.80 | 0.00 | 952.60 | 784.30 | 168.30 | 952.60 | 784.80 |
| 7 | 118.60 | 118.60 | 0.00 | 952.90 | 782.90 | 170.00 | 952.80 | 783.40 |
| 8 | 103.00 | 103.00 | 0.00 | 953.10 | 782.60 | 170.50 | 953.10 | 782.60 |
| 9 | 103.60 | 103.60 | 0.00 | 952.90 | 782.70 | 170.20 | 953.00 | 782.50 |
| 10 | 117.80 | 117.80 | 0.00 | 952.50 | 783.20 | 169.30 | 952.60 | 783.10 |
| 11 | 120.60 | 120.60 | 0.00 | 952.60 | 783.30 | 169.30 | 952.60 | 783.10 |
| 12 | 142.70 | 142.70 | 0.00 | 952.30 | 784.00 | 168.30 | 952.30 | 784.20 |
| 13 | 132.60 | 132.60 | 0.00 | 952.20 | 783.50 | 168.70 | 952.30 | 783.50 |
| 14 | 139.70 | 139.70 | 0.00 | 952.00 | 783.90 | 168.10 | 952.10 | 783.80 |
| 15 | 139.00 | 139.00 | 0.00 | 952.00 | 783.80 | 168.20 | 952.00 | 783.70 |
| 16 | 142.80 | 142.80 | 0.00 | 951.80 | 783.80 | 168.00 | 951.90 | 783.80 |
| 17 | 142.80 | 142.80 | 0.00 | 952.10 | 783.60 | 168.50 | 952.00 | 783.70 |
| 18 | 142.90 | 142.90 | 0.00 | 952.40 | 783.40 | 169.00 | 952.20 | 783.60 |
| 19 | 143.30 | 143.30 | 0.00 | 952.70 | 783.20 | 169.50 | 952.50 | 783.50 |
| 20 | 141.50 | 141.50 | 0.00 | 953.10 | 783.40 | 169.70 | 952.90 | 783.40 |
| 21 | 136.30 | 136.30 | 0.00 | 953.70 | 782.60 | 171.10 | 953.40 | 783.00 |
| 22 | 135.80 | 135.80 | 0.00 | 953.90 | 782.90 | 171.00 | 953.90 | 782.90 |
| 23 | 137.20 | 137.20 | 0.00 | 953.80 | 782.70 | 171.10 | 953.90 | 782.90 |
| 24 | 137.10 | 137.10 | 0.00 | 953.70 | 782.70 | 171.00 | 953.70 | 782.80 |
|
| AVG | 136.08 | 136.08 | 0.00 | 952.78 | 783.57 | 169.21 | 952.76 | 783.65 |
|
| MAX | 151.40 | 151.40 | 0.00 | 953.90 | 785.00 | 171.10 | 953.90 | 785.00 |
| MIN | 103.00 | 103.00 | 0.00 | 951.80 | 782.60 | 167.60 | 951.90 | 782.50 |