Chief Joseph Dam
Saturday April 11, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head | Average Forebay Elevation | Average Tailwater Elevation |
|---|
| 1 | 108.50 | 108.50 | 0.00 | 953.30 | 780.50 | 172.80 | 953.20 | 780.60 |
| 2 | 108.10 | 108.10 | 0.00 | 953.50 | 780.40 | 173.10 | 953.40 | 780.40 |
| 3 | 109.20 | 109.20 | 0.00 | 953.80 | 780.20 | 173.60 | 953.70 | 780.30 |
| 4 | 107.50 | 107.30 | 0.20 | 954.00 | 780.30 | 173.70 | 953.90 | 780.10 |
| 5 | 116.80 | 107.30 | 9.50 | 954.10 | 780.50 | 173.60 | 954.00 | 780.50 |
| 6 | 117.20 | 107.70 | 9.50 | 954.20 | 780.50 | 173.70 | 954.20 | 780.50 |
| 7 | 117.80 | 108.30 | 9.50 | 954.40 | 780.60 | 173.80 | 954.30 | 780.50 |
| 8 | 116.10 | 106.60 | 9.50 | 954.30 | 780.70 | 173.60 | 954.40 | 780.50 |
| 9 | 117.80 | 108.30 | 9.50 | 954.20 | 780.90 | 173.30 | 954.20 | 780.80 |
| 10 | 116.50 | 107.00 | 9.50 | 954.00 | 781.20 | 172.80 | 954.10 | 780.90 |
| 11 | 118.70 | 109.20 | 9.50 | 953.70 | 781.40 | 172.30 | 953.80 | 781.30 |
| 12 | 118.80 | 109.30 | 9.50 | 953.40 | 782.00 | 171.40 | 953.50 | 781.70 |
| 13 | 120.10 | 110.60 | 9.50 | 953.00 | 782.50 | 170.50 | 953.20 | 782.20 |
| 14 | 120.10 | 110.60 | 9.50 | 952.70 | 783.00 | 169.70 | 952.90 | 782.70 |
| 15 | 120.30 | 110.80 | 9.50 | 952.30 | 783.50 | 168.80 | 952.50 | 783.20 |
| 16 | 122.40 | 112.90 | 9.50 | 951.90 | 784.10 | 167.80 | 952.10 | 783.80 |
| 17 | 122.60 | 113.10 | 9.50 | 951.50 | 783.80 | 167.70 | 951.70 | 783.90 |
| 18 | 123.50 | 114.00 | 9.50 | 951.20 | 783.80 | 167.40 | 951.30 | 784.00 |
| 19 | 124.80 | 115.30 | 9.50 | 951.00 | 783.60 | 167.40 | 951.10 | 783.70 |
| 20 | 124.40 | 114.90 | 9.50 | 951.10 | 783.40 | 167.70 | 951.00 | 783.70 |
| 21 | 120.50 | 111.00 | 9.50 | 951.60 | 783.50 | 168.10 | 951.40 | 783.40 |
| 22 | 121.10 | 111.60 | 9.50 | 952.10 | 783.10 | 169.00 | 951.80 | 783.30 |
| 23 | 120.40 | 110.90 | 9.50 | 952.20 | 783.00 | 169.20 | 952.20 | 783.00 |
| 24 | 120.40 | 110.90 | 9.50 | 952.50 | 782.70 | 169.80 | 952.40 | 782.70 |
|
| AVG | 118.07 | 110.14 | 7.92 | 952.92 | 782.05 | 170.87 | 952.93 | 781.99 |
|
| MAX | 124.80 | 115.30 | 9.50 | 954.40 | 784.10 | 173.80 | 954.40 | 784.00 |
| MIN | 107.50 | 106.60 | 0.00 | 951.00 | 780.20 | 167.40 | 951.00 | 780.10 |