Chief Joseph Dam
Wednesday June 3, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 182.60 | 160.20 | 22.40 | 952.50 | 782.40 | 170.10 | 952.50 | 787.40 |
| 2 | 182.70 | 160.30 | 22.40 | 952.60 | 787.50 | 165.10 | 952.50 | 787.40 |
| 3 | 182.80 | 160.40 | 22.40 | 952.50 | 787.40 | 165.10 | 952.50 | 782.40 |
| 4 | 181.00 | 158.60 | 22.40 | 952.50 | 787.20 | 165.30 | 952.50 | 787.40 |
| 5 | 178.00 | 155.60 | 22.40 | 952.50 | 787.20 | 165.30 | 952.50 | 787.20 |
| 6 | 180.90 | 158.50 | 22.40 | 952.50 | 787.20 | 165.30 | 952.50 | 787.30 |
| 7 | 179.40 | 157.00 | 22.40 | 952.50 | 787.20 | 165.30 | 952.50 | 787.10 |
| 8 | 180.10 | 157.70 | 22.40 | 952.50 | 787.10 | 165.40 | 952.50 | 787.10 |
| 9 | 180.60 | 158.20 | 22.40 | 952.50 | 787.10 | 165.40 | 952.50 | 787.20 |
| 10 | 180.80 | 158.40 | 22.40 | 952.40 | 787.10 | 165.30 | 952.40 | 787.10 |
| 11 | 181.70 | 159.30 | 22.40 | 952.20 | 787.10 | 165.10 | 952.30 | 787.10 |
| 12 | 180.30 | 157.90 | 22.40 | 952.10 | 787.00 | 165.10 | 952.20 | 787.00 |
| 13 | 177.20 | 154.80 | 22.40 | 952.20 | 786.80 | 165.40 | 952.20 | 786.90 |
| 14 | 169.60 | 147.20 | 22.40 | 952.40 | 786.00 | 166.40 | 952.30 | 786.50 |
| 15 | 167.40 | 145.00 | 22.40 | 952.30 | 786.50 | 165.80 | 952.40 | 786.40 |
| 16 | 174.00 | 151.60 | 22.40 | 952.30 | 786.40 | 165.90 | 952.20 | 786.60 |
| 17 | 173.10 | 150.70 | 22.40 | 952.20 | 786.60 | 165.60 | 952.20 | 786.60 |
| 18 | 173.30 | 150.90 | 22.40 | 952.20 | 786.70 | 165.50 | 952.30 | 786.60 |
| 19 | 173.50 | 151.10 | 22.40 | 952.10 | 786.70 | 165.40 | 952.10 | 786.60 |
| 20 | 173.50 | 151.10 | 22.40 | 952.20 | 786.60 | 165.60 | 952.10 | 786.70 |
| 21 | 181.20 | 158.80 | 22.40 | 952.10 | 787.00 | 165.10 | 952.10 | 786.70 |
| 22 | 180.60 | 158.20 | 22.40 | 951.90 | 787.00 | 164.90 | 952.00 | 786.90 |
| 23 | 181.30 | 158.90 | 22.40 | 951.80 | 787.00 | 164.80 | 951.90 | 786.90 |
| 24 | 181.70 | 159.30 | 22.40 | 951.60 | 787.00 | 164.60 | 951.70 | 787.00 |
|
| AVG | 178.22 | 155.82 | 22.40 | 952.27 | 786.74 | 165.53 | 952.29 | 786.75 |
|
| MAX | 182.80 | 160.40 | 22.40 | 952.60 | 787.50 | 170.10 | 952.50 | 787.40 |
| MIN | 167.40 | 145.00 | 22.40 | 951.60 | 782.40 | 164.60 | 951.70 | 782.40 |