Chief Joseph Dam
Thursday June 18, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 114.60 | 114.60 | 0.00 | 952.90 | 780.90 | 172.00 | 952.90 | 780.80 |
| 2 | 116.60 | 116.60 | 0.00 | 953.00 | 780.20 | 172.80 | 952.90 | 780.80 |
| 3 | 108.10 | 108.10 | 0.00 | 953.20 | 779.90 | 173.30 | 953.10 | 780.20 |
| 4 | 103.30 | 103.30 | 0.00 | 953.30 | 779.80 | 173.50 | 953.30 | 779.90 |
| 5 | 103.90 | 103.90 | 0.00 | 953.10 | 780.60 | 172.50 | 953.20 | 779.90 |
| 6 | 121.10 | 121.10 | 0.00 | 952.90 | 781.20 | 171.70 | 952.90 | 781.10 |
| 7 | 114.20 | 114.20 | 0.00 | 953.20 | 780.60 | 172.60 | 952.90 | 780.80 |
| 8 | 114.10 | 114.10 | 0.00 | 953.00 | 781.60 | 171.40 | 953.20 | 781.30 |
| 9 | 113.10 | 113.10 | 0.00 | 952.60 | 781.30 | 171.30 | 952.80 | 781.40 |
| 10 | 118.70 | 118.70 | 0.00 | 952.30 | 782.30 | 170.00 | 952.50 | 781.80 |
| 11 | 126.10 | 126.10 | 0.00 | 952.10 | 782.50 | 169.60 | 952.20 | 782.50 |
| 12 | 120.60 | 120.60 | 0.00 | 952.00 | 782.80 | 169.20 | 952.10 | 782.40 |
| 13 | 124.50 | 124.50 | 0.00 | 951.80 | 782.90 | 168.90 | 951.90 | 782.80 |
| 14 | 124.60 | 124.60 | 0.00 | 951.70 | 783.20 | 168.50 | 951.70 | 783.00 |
| 15 | 123.20 | 123.20 | 0.00 | 951.70 | 783.30 | 168.40 | 951.70 | 783.10 |
| 16 | 126.60 | 126.60 | 0.00 | 951.70 | 783.70 | 168.00 | 951.70 | 783.50 |
| 17 | 126.60 | 126.60 | 0.00 | 951.90 | 783.80 | 168.10 | 951.80 | 783.60 |
| 18 | 127.40 | 127.40 | 0.00 | 952.00 | 784.00 | 168.00 | 952.00 | 783.80 |
| 19 | 130.60 | 130.60 | 0.00 | 952.30 | 784.10 | 168.20 | 952.20 | 783.90 |
| 20 | 149.10 | 149.10 | 0.00 | 952.50 | 784.60 | 167.90 | 952.30 | 784.70 |
| 21 | 148.40 | 148.40 | 0.00 | 952.70 | 784.50 | 168.20 | 952.60 | 784.50 |
| 22 | 153.50 | 153.50 | 0.00 | 952.70 | 784.90 | 167.80 | 952.70 | 784.80 |
| 23 | 153.30 | 153.30 | 0.00 | 952.70 | 784.90 | 167.80 | 952.70 | 784.80 |
| 24 | 154.00 | 154.00 | 0.00 | 952.80 | 784.80 | 168.00 | 952.70 | 784.90 |
|
| AVG | 125.67 | 125.67 | 0.00 | 952.50 | 782.60 | 169.90 | 952.50 | 782.51 |
|
| MAX | 154.00 | 154.00 | 0.00 | 953.30 | 784.90 | 173.50 | 953.30 | 784.90 |
| MIN | 103.30 | 103.30 | 0.00 | 951.70 | 779.80 | 167.80 | 951.70 | 779.90 |