Grand Coulee Dam
Thursday June 18, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 121.50 | 121.50 | 0.00 | 1282.70 | 962.50 | 320.20 |
| 2 | 120.20 | 120.20 | 0.00 | 1282.70 | 962.60 | 320.10 |
| 3 | 108.00 | 108.00 | 0.00 | 1282.70 | 961.80 | 320.90 |
| 4 | 101.60 | 101.60 | 0.00 | 1282.70 | 961.00 | 321.70 |
| 5 | 102.60 | 102.60 | 0.00 | 1282.80 | 960.80 | 322.00 |
| 6 | 125.10 | 125.10 | 0.00 | 1282.80 | 962.60 | 320.20 |
| 7 | 94.70 | 94.70 | 0.00 | 1282.90 | 961.20 | 321.70 |
| 8 | 92.30 | 92.30 | 0.00 | 1283.00 | 960.00 | 323.00 |
| 9 | 88.10 | 88.10 | 0.00 | 1282.90 | 959.60 | 323.30 |
| 10 | 99.00 | 99.00 | 0.00 | 1283.00 | 960.20 | 322.80 |
| 11 | 108.30 | 108.30 | 0.00 | 1283.00 | 961.10 | 321.90 |
| 12 | 104.10 | 104.10 | 0.00 | 1283.00 | 960.90 | 322.10 |
| 13 | 114.80 | 114.80 | 0.00 | 1283.00 | 961.40 | 321.60 |
| 14 | 119.90 | 119.90 | 0.00 | 1283.10 | 961.90 | 321.20 |
| 15 | 132.80 | 132.80 | 0.00 | 1283.10 | 962.90 | 320.20 |
| 16 | 133.90 | 133.90 | 0.00 | 1283.10 | 963.40 | 319.70 |
| 17 | 152.60 | 152.60 | 0.00 | 1283.10 | 964.70 | 318.40 |
| 18 | 158.00 | 158.00 | 0.00 | 1283.00 | 965.60 | 317.40 |
| 19 | 167.80 | 167.80 | 0.00 | 1283.00 | 966.60 | 316.40 |
| 20 | 163.90 | 163.90 | 0.00 | 1283.00 | 966.80 | 316.20 |
| 21 | 157.40 | 157.40 | 0.00 | 1283.10 | 966.20 | 316.90 |
| 22 | 152.60 | 152.60 | 0.00 | 1283.10 | 965.70 | 317.40 |
| 23 | 160.30 | 160.30 | 0.00 | 1283.00 | 966.20 | 316.80 |
| 24 | 154.10 | 154.10 | 0.00 | 1283.00 | 966.00 | 317.00 |
|
| AVG | 126.40 | 126.40 | 0.00 | 1282.95 | 962.99 | 319.96 |
|
| MAX | 167.80 | 167.80 | 0.00 | 1283.10 | 966.80 | 323.30 |
| MIN | 88.10 | 88.10 | 0.00 | 1282.70 | 959.60 | 316.20 |