Chief Joseph Dam
Wednesday June 17, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
| 1 | 119.20 | 119.20 | 0.00 | 953.90 | 781.10 | 172.80 | 953.80 | 781.80 |
| 2 | 107.40 | 107.40 | 0.00 | 953.80 | 781.00 | 172.80 | 953.80 | 781.20 |
| 3 | 97.20 | 97.20 | 0.00 | 953.50 | 780.20 | 173.30 | 953.60 | 780.50 |
| 4 | 91.10 | 91.10 | 0.00 | 953.10 | 780.10 | 173.00 | 953.30 | 780.00 |
| 5 | 96.50 | 96.50 | 0.00 | 953.00 | 780.90 | 172.10 | 953.00 | 780.40 |
| 6 | 104.10 | 104.10 | 0.00 | 952.80 | 780.50 | 172.30 | 952.80 | 780.70 |
| 7 | 65.00 | 65.00 | 0.00 | 953.40 | 777.60 | 175.80 | 953.10 | 778.40 |
| 8 | 58.40 | 58.40 | 0.00 | 953.60 | 777.80 | 175.80 | 953.40 | 778.00 |
| 9 | 67.40 | 67.40 | 0.00 | 953.30 | 778.60 | 174.70 | 953.40 | 778.40 |
| 10 | 78.60 | 78.60 | 0.00 | 953.50 | 779.30 | 174.20 | 953.40 | 778.80 |
| 11 | 96.30 | 96.30 | 0.00 | 953.40 | 780.20 | 173.20 | 953.50 | 780.00 |
| 12 | 104.90 | 104.90 | 0.00 | 953.20 | 780.90 | 172.30 | 953.30 | 780.60 |
| 13 | 121.70 | 121.70 | 0.00 | 952.90 | 782.10 | 170.80 | 953.10 | 781.80 |
| 14 | 123.00 | 123.00 | 0.00 | 952.70 | 782.20 | 170.50 | 952.80 | 782.10 |
| 15 | 126.70 | 126.70 | 0.00 | 952.30 | 783.00 | 169.30 | 952.60 | 782.60 |
| 16 | 123.80 | 123.80 | 0.00 | 952.20 | 782.70 | 169.50 | 952.30 | 782.80 |
| 17 | 115.60 | 115.60 | 0.00 | 952.20 | 782.70 | 169.50 | 952.30 | 782.50 |
| 18 | 115.20 | 115.20 | 0.00 | 952.10 | 782.90 | 169.20 | 952.10 | 782.70 |
| 19 | 114.30 | 114.30 | 0.00 | 951.90 | 782.50 | 169.40 | 952.00 | 782.50 |
| 20 | 117.70 | 117.70 | 0.00 | 951.90 | 782.50 | 169.40 | 951.90 | 782.50 |
| 21 | 118.80 | 118.80 | 0.00 | 952.20 | 781.80 | 170.40 | 952.00 | 782.30 |
| 22 | 112.20 | 112.20 | 0.00 | 952.50 | 781.50 | 171.00 | 952.40 | 781.50 |
| 23 | 112.90 | 112.90 | 0.00 | 952.50 | 781.10 | 171.40 | 952.50 | 781.30 |
| 24 | 111.90 | 111.90 | 0.00 | 952.90 | 780.70 | 172.20 | 952.80 | 780.90 |
|
| AVG | 104.16 | 104.16 | 0.00 | 952.87 | 781.00 | 171.87 | 952.88 | 781.01 |
|
| MAX | 126.70 | 126.70 | 0.00 | 953.90 | 783.00 | 175.80 | 953.80 | 782.80 |
| MIN | 58.40 | 58.40 | 0.00 | 951.90 | 777.60 | 169.20 | 951.90 | 778.00 |