Chief Joseph Dam
Sunday March 22, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 124.60 | 124.60 | 0.00 | 952.30 | 784.00 | 168.30 | 952.30 | 783.90 |
| 2 | 128.70 | 128.70 | 0.00 | 952.10 | 784.10 | 168.00 | 952.30 | 784.10 |
| 3 | 137.50 | 137.50 | 0.00 | 951.70 | 784.60 | 167.10 | 951.90 | 784.40 |
| 4 | 139.80 | 139.80 | 0.00 | 951.40 | 784.60 | 166.80 | 951.50 | 784.50 |
| 5 | 140.60 | 140.60 | 0.00 | 951.00 | 784.70 | 166.30 | 951.20 | 784.60 |
| 6 | 142.10 | 142.10 | 0.00 | 950.70 | 784.90 | 165.80 | 950.80 | 784.70 |
| 7 | 143.20 | 143.20 | 0.00 | 950.70 | 785.20 | 165.50 | 950.60 | 784.80 |
| 8 | 135.80 | 135.80 | 0.00 | 950.70 | 784.40 | 166.30 | 950.60 | 784.60 |
| 9 | 127.60 | 127.60 | 0.00 | 951.20 | 783.30 | 167.90 | 950.90 | 784.20 |
| 10 | 92.90 | 92.90 | 0.00 | 952.30 | 781.60 | 170.70 | 951.70 | 782.30 |
| 11 | 76.90 | 76.90 | 0.00 | 952.80 | 781.70 | 171.10 | 952.40 | 781.60 |
| 12 | 92.30 | 92.30 | 0.00 | 953.20 | 783.10 | 170.10 | 953.00 | 782.30 |
| 13 | 100.50 | 100.50 | 0.00 | 953.70 | 782.50 | 171.20 | 953.40 | 782.40 |
| 14 | 91.00 | 91.00 | 0.00 | 953.80 | 781.80 | 172.00 | 953.80 | 781.90 |
| 15 | 99.20 | 99.20 | 0.00 | 953.60 | 782.30 | 171.30 | 953.60 | 782.40 |
| 16 | 107.80 | 107.80 | 0.00 | 953.40 | 782.80 | 170.60 | 953.50 | 782.70 |
| 17 | 114.80 | 114.80 | 0.00 | 953.10 | 783.30 | 169.80 | 953.20 | 783.00 |
| 18 | 125.00 | 125.00 | 0.00 | 953.00 | 783.70 | 169.30 | 953.10 | 783.70 |
| 19 | 124.90 | 124.90 | 0.00 | 953.00 | 783.90 | 169.10 | 952.90 | 783.80 |
| 20 | 145.00 | 145.00 | 0.00 | 953.10 | 784.90 | 168.20 | 952.90 | 784.90 |
| 21 | 136.60 | 136.60 | 0.00 | 953.60 | 784.50 | 169.10 | 953.30 | 784.50 |
| 22 | 140.50 | 140.50 | 0.00 | 953.80 | 784.90 | 168.90 | 953.80 | 784.80 |
| 23 | 144.20 | 144.20 | 0.00 | 953.90 | 784.80 | 169.10 | 953.90 | 785.00 |
| 24 | 142.20 | 142.20 | 0.00 | 953.80 | 784.90 | 168.90 | 953.90 | 784.90 |
|
| AVG | 123.07 | 123.07 | 0.00 | 952.58 | 783.77 | 168.81 | 952.52 | 783.75 |
|
| MAX | 145.00 | 145.00 | 0.00 | 953.90 | 785.20 | 172.00 | 953.90 | 785.00 |
| MIN | 76.90 | 76.90 | 0.00 | 950.70 | 781.60 | 165.50 | 950.60 | 781.60 |