Grand Coulee Dam
Sunday August 2, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 68.20 | 68.20 | 0.00 | 1284.30 | 957.50 | 326.80 |
| 2 | 62.80 | 62.80 | 0.00 | 1284.30 | 957.00 | 327.30 |
| 3 | 55.20 | 55.20 | 0.00 | 1284.40 | 956.40 | 328.00 |
| 4 | 50.40 | 50.40 | 0.00 | 1284.40 | 955.80 | 328.60 |
| 5 | 47.90 | 47.90 | 0.00 | 1284.40 | 955.60 | 328.80 |
| 6 | 51.10 | 51.10 | 0.00 | 1284.40 | 955.90 | 328.50 |
| 7 | 48.40 | 48.40 | 0.00 | 1284.40 | 955.60 | 328.80 |
| 8 | 48.60 | 48.60 | 0.00 | 1284.50 | 955.30 | 329.20 |
| 9 | 65.80 | 65.80 | 0.00 | 1284.40 | 956.50 | 327.90 |
| 10 | 76.70 | 76.70 | 0.00 | 1284.40 | 957.90 | 326.50 |
| 11 | 76.20 | 76.20 | 0.00 | 1284.50 | 957.80 | 326.70 |
| 12 | 78.60 | 78.60 | 0.00 | 1284.40 | 959.90 | 324.50 |
| 13 | 81.60 | 81.60 | 0.00 | 1284.40 | 958.20 | 326.20 |
| 14 | 82.60 | 82.60 | 0.00 | 1284.40 | 958.50 | 325.90 |
| 15 | 92.00 | 92.00 | 0.00 | 1284.40 | 959.10 | 325.30 |
| 16 | 95.20 | 95.20 | 0.00 | 1284.40 | 959.70 | 324.70 |
| 17 | 99.80 | 99.80 | 0.00 | 1284.30 | 960.10 | 324.20 |
| 18 | 100.40 | 100.40 | 0.00 | 1284.40 | 960.30 | 324.10 |
| 19 | 114.40 | 114.40 | 0.00 | 1284.30 | 961.30 | 323.00 |
| 20 | 127.10 | 127.10 | 0.00 | 1284.20 | 962.80 | 321.40 |
| 21 | 111.10 | 111.10 | 0.00 | 1284.20 | 962.00 | 322.20 |
| 22 | 97.80 | 97.00 | 0.80 | 1284.20 | 960.70 | 323.50 |
| 23 | 88.00 | 87.90 | 0.10 | 1284.20 | 959.40 | 324.80 |
| 24 | 77.50 | 77.50 | 0.00 | 1284.20 | 958.30 | 325.90 |
|
| AVG | 79.06 | 79.02 | 0.04 | 1284.35 | 958.40 | 325.95 |
|
| MAX | 127.10 | 127.10 | 0.80 | 1284.50 | 962.80 | 329.20 |
| MIN | 47.90 | 47.90 | 0.00 | 1284.20 | 955.30 | 321.40 |