Chief Joseph Dam
Monday May 4, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 147.40 | 147.40 | 0.00 | 952.20 | 784.20 | 168.00 | 952.10 | 784.60 |
| 2 | 127.30 | 127.30 | 0.00 | 952.40 | 783.50 | 168.90 | 952.40 | 783.60 |
| 3 | 126.20 | 126.20 | 0.00 | 952.20 | 783.60 | 168.60 | 952.30 | 783.60 |
| 4 | 127.20 | 127.20 | 0.00 | 952.10 | 783.30 | 168.80 | 952.10 | 783.50 |
| 5 | 119.80 | 119.80 | 0.00 | 952.00 | 782.70 | 169.30 | 952.10 | 783.00 |
| 6 | 120.50 | 120.50 | 0.00 | 951.90 | 782.60 | 169.30 | 951.90 | 782.90 |
| 7 | 110.90 | 110.90 | 0.00 | 952.10 | 782.30 | 169.80 | 952.00 | 782.20 |
| 8 | 124.70 | 124.70 | 0.00 | 952.10 | 782.90 | 169.20 | 952.10 | 782.90 |
| 9 | 132.00 | 132.00 | 0.00 | 952.30 | 782.80 | 169.50 | 952.10 | 783.30 |
| 10 | 119.80 | 119.80 | 0.00 | 952.60 | 782.90 | 169.70 | 952.50 | 782.60 |
| 11 | 123.70 | 123.70 | 0.00 | 952.50 | 783.10 | 169.40 | 952.60 | 783.00 |
| 12 | 125.40 | 125.40 | 0.00 | 952.50 | 783.10 | 169.40 | 952.40 | 783.10 |
| 13 | 130.70 | 130.70 | 0.00 | 952.40 | 783.40 | 169.00 | 952.40 | 783.30 |
| 14 | 137.80 | 137.80 | 0.00 | 952.40 | 783.70 | 168.70 | 952.30 | 783.60 |
| 15 | 143.80 | 143.80 | 0.00 | 952.50 | 783.80 | 168.70 | 952.40 | 784.00 |
| 16 | 143.50 | 143.50 | 0.00 | 952.60 | 784.20 | 168.40 | 952.50 | 784.10 |
| 17 | 146.70 | 146.70 | 0.00 | 952.70 | 784.30 | 168.40 | 952.60 | 784.30 |
| 18 | 133.60 | 133.60 | 0.00 | 952.90 | 783.90 | 169.00 | 952.80 | 783.50 |
| 19 | 139.70 | 139.70 | 0.00 | 953.40 | 784.40 | 169.00 | 953.20 | 783.80 |
| 20 | 153.00 | 153.00 | 0.00 | 953.60 | 784.60 | 169.00 | 953.50 | 784.50 |
| 21 | 155.50 | 155.50 | 0.00 | 953.90 | 784.70 | 169.20 | 953.80 | 784.60 |
| 22 | 158.50 | 158.50 | 0.00 | 954.00 | 784.80 | 169.20 | 954.00 | 784.80 |
| 23 | 156.80 | 156.80 | 0.00 | 954.10 | 784.90 | 169.20 | 954.10 | 784.80 |
| 24 | 156.90 | 156.90 | 0.00 | 954.20 | 786.90 | 167.30 | 954.20 | 784.90 |
|
| AVG | 135.89 | 135.89 | 0.00 | 952.73 | 783.78 | 168.96 | 952.68 | 783.69 |
|
| MAX | 158.50 | 158.50 | 0.00 | 954.20 | 786.90 | 169.80 | 954.20 | 784.90 |
| MIN | 110.90 | 110.90 | 0.00 | 951.90 | 782.30 | 167.30 | 951.90 | 782.20 |