Chief Joseph Dam
Sunday May 3, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 123.60 | 123.60 | 0.00 | 953.10 | 782.90 | 170.20 | 952.90 | 783.10 |
| 2 | 120.40 | 120.40 | 0.00 | 953.20 | 782.70 | 170.50 | 953.20 | 782.80 |
| 3 | 117.00 | 117.00 | 0.00 | 953.40 | 782.30 | 171.10 | 953.30 | 782.40 |
| 4 | 119.40 | 119.40 | 0.00 | 953.40 | 782.40 | 171.00 | 953.50 | 782.30 |
| 5 | 124.00 | 124.00 | 0.00 | 953.30 | 782.70 | 170.60 | 953.40 | 782.40 |
| 6 | 138.00 | 138.00 | 0.00 | 953.10 | 783.20 | 169.90 | 953.20 | 783.10 |
| 7 | 137.60 | 137.60 | 0.00 | 953.00 | 782.90 | 170.10 | 953.10 | 783.10 |
| 8 | 130.70 | 130.70 | 0.00 | 953.00 | 782.40 | 170.60 | 952.90 | 782.80 |
| 9 | 119.20 | 119.20 | 0.00 | 952.90 | 782.30 | 170.60 | 953.00 | 782.20 |
| 10 | 113.70 | 113.70 | 0.00 | 952.70 | 782.50 | 170.20 | 952.90 | 782.30 |
| 11 | 113.50 | 113.50 | 0.00 | 952.50 | 782.70 | 169.80 | 952.60 | 782.60 |
| 12 | 118.40 | 118.40 | 0.00 | 952.40 | 783.10 | 169.30 | 952.40 | 783.10 |
| 13 | 114.10 | 114.10 | 0.00 | 952.30 | 782.90 | 169.40 | 952.30 | 782.90 |
| 14 | 113.60 | 113.60 | 0.00 | 952.30 | 782.90 | 169.40 | 952.30 | 782.90 |
| 15 | 112.50 | 112.50 | 0.00 | 952.20 | 782.90 | 169.30 | 952.20 | 782.90 |
| 16 | 118.00 | 118.00 | 0.00 | 952.00 | 783.30 | 168.70 | 952.10 | 783.20 |
| 17 | 121.20 | 121.20 | 0.00 | 951.90 | 783.60 | 168.30 | 951.90 | 783.20 |
| 18 | 135.20 | 135.20 | 0.00 | 951.80 | 784.70 | 167.10 | 951.90 | 783.90 |
| 19 | 155.10 | 155.10 | 0.00 | 951.60 | 785.00 | 166.60 | 951.70 | 785.00 |
| 20 | 160.00 | 160.00 | 0.00 | 951.60 | 785.20 | 166.40 | 951.60 | 785.10 |
| 21 | 160.30 | 160.30 | 0.00 | 951.80 | 785.20 | 166.60 | 951.70 | 785.10 |
| 22 | 161.10 | 161.10 | 0.00 | 951.80 | 785.20 | 166.60 | 951.80 | 785.20 |
| 23 | 161.20 | 161.20 | 0.00 | 951.90 | 785.30 | 166.60 | 951.80 | 785.20 |
| 24 | 160.40 | 160.40 | 0.00 | 952.00 | 785.00 | 167.00 | 952.00 | 785.20 |
|
| AVG | 131.17 | 131.17 | 0.00 | 952.47 | 783.47 | 169.00 | 952.49 | 783.42 |
|
| MAX | 161.20 | 161.20 | 0.00 | 953.40 | 785.30 | 171.10 | 953.50 | 785.20 |
| MIN | 112.50 | 112.50 | 0.00 | 951.60 | 782.30 | 166.40 | 951.60 | 782.20 |