Chief Joseph Dam
Tuesday June 2, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 177.60 | 157.20 | 20.40 | 954.40 | 787.20 | 167.20 | 954.40 | 787.20 |
| 2 | 176.80 | 154.40 | 22.40 | 954.50 | 787.30 | 167.20 | 954.50 | 780.10 |
| 3 | 179.60 | 157.20 | 22.40 | 954.40 | 787.30 | 167.10 | 954.50 | 787.30 |
| 4 | 180.00 | 157.60 | 22.40 | 954.30 | 787.10 | 167.20 | 954.30 | 787.30 |
| 5 | 178.80 | 156.40 | 22.40 | 954.00 | 787.00 | 167.00 | 954.10 | 787.20 |
| 6 | 175.90 | 153.50 | 22.40 | 953.90 | 787.20 | 166.70 | 953.90 | 787.00 |
| 7 | 176.70 | 154.30 | 22.40 | 953.60 | 787.20 | 166.40 | 953.70 | 787.10 |
| 8 | 180.20 | 157.80 | 22.40 | 953.40 | 787.10 | 166.30 | 953.60 | 787.20 |
| 9 | 176.80 | 154.40 | 22.40 | 953.40 | 787.30 | 166.10 | 953.50 | 787.10 |
| 10 | 176.00 | 153.60 | 22.40 | 953.30 | 787.20 | 166.10 | 953.40 | 787.10 |
| 11 | 176.90 | 154.50 | 22.40 | 953.00 | 787.30 | 165.70 | 953.20 | 787.10 |
| 12 | 179.50 | 157.10 | 22.40 | 952.80 | 787.30 | 165.50 | 952.90 | 787.30 |
| 13 | 181.30 | 158.90 | 22.40 | 952.60 | 787.40 | 165.20 | 952.70 | 787.30 |
| 14 | 180.60 | 158.20 | 22.40 | 952.40 | 787.30 | 165.10 | 952.50 | 787.40 |
| 15 | 180.60 | 158.20 | 22.40 | 952.40 | 787.50 | 164.90 | 952.40 | 787.40 |
| 16 | 181.80 | 159.40 | 22.40 | 952.30 | 787.40 | 164.90 | 952.30 | 787.40 |
| 17 | 182.10 | 159.70 | 22.40 | 952.30 | 787.30 | 165.00 | 952.30 | 787.40 |
| 18 | 181.30 | 158.90 | 22.40 | 952.20 | 787.40 | 164.80 | 952.30 | 787.30 |
| 19 | 181.10 | 158.70 | 22.40 | 952.30 | 787.20 | 165.10 | 952.30 | 787.30 |
| 20 | 182.40 | 160.00 | 22.40 | 952.30 | 787.30 | 165.00 | 952.30 | 787.30 |
| 21 | 182.60 | 160.20 | 22.40 | 952.30 | 787.30 | 165.00 | 952.30 | 787.30 |
| 22 | 182.60 | 160.20 | 22.40 | 952.40 | 787.30 | 165.10 | 952.40 | 781.30 |
| 23 | 182.50 | 160.10 | 22.40 | 952.40 | 787.30 | 165.10 | 952.40 | 787.30 |
| 24 | 182.60 | 160.20 | 22.40 | 952.40 | 787.40 | 165.00 | 952.40 | 787.30 |
|
| AVG | 179.85 | 157.53 | 22.32 | 953.05 | 787.27 | 165.78 | 953.11 | 786.71 |
|
| MAX | 182.60 | 160.20 | 22.40 | 954.50 | 787.50 | 167.20 | 954.50 | 787.40 |
| MIN | 175.90 | 153.50 | 20.40 | 952.20 | 787.00 | 164.80 | 952.30 | 780.10 |