Grand Coulee Dam
Saturday August 1, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 78.20 | 78.20 | 0.00 | 1284.50 | 959.90 | 324.60 |
| 2 | 68.20 | 68.20 | 0.00 | 1284.50 | 959.30 | 325.20 |
| 3 | 58.30 | 58.30 | 0.00 | 1284.50 | 957.70 | 326.80 |
| 4 | 53.90 | 53.90 | 0.00 | 1284.60 | 956.60 | 328.00 |
| 5 | 72.20 | 72.20 | 0.00 | 1284.60 | 957.50 | 327.10 |
| 6 | 70.70 | 70.70 | 0.00 | 1284.60 | 957.50 | 327.10 |
| 7 | 67.40 | 67.40 | 0.00 | 1284.60 | 957.30 | 327.30 |
| 8 | 63.80 | 63.80 | 0.00 | 1284.60 | 956.90 | 327.70 |
| 9 | 66.60 | 66.60 | 0.00 | 1284.60 | 957.10 | 327.50 |
| 10 | 70.40 | 70.40 | 0.00 | 1284.60 | 957.40 | 327.20 |
| 11 | 70.80 | 70.80 | 0.00 | 1284.60 | 957.60 | 327.00 |
| 12 | 85.90 | 85.90 | 0.00 | 1284.50 | 958.80 | 325.70 |
| 13 | 90.80 | 90.80 | 0.00 | 1284.40 | 959.50 | 324.90 |
| 14 | 90.10 | 90.10 | 0.00 | 1284.40 | 959.70 | 324.70 |
| 15 | 91.10 | 91.10 | 0.00 | 1284.40 | 959.80 | 324.60 |
| 16 | 108.80 | 108.80 | 0.00 | 1284.40 | 961.10 | 323.30 |
| 17 | 113.60 | 113.60 | 0.00 | 1284.40 | 961.90 | 322.50 |
| 18 | 113.40 | 113.40 | 0.00 | 1284.40 | 961.90 | 322.50 |
| 19 | 116.90 | 116.90 | 0.00 | 1284.30 | 962.10 | 322.20 |
| 20 | 118.00 | 118.00 | 0.00 | 1284.20 | 962.50 | 321.70 |
| 21 | 106.70 | 106.70 | 0.00 | 1284.30 | 961.70 | 322.60 |
| 22 | 94.10 | 93.20 | 0.90 | 1284.30 | 960.70 | 323.60 |
| 23 | 83.20 | 83.00 | 0.20 | 1284.30 | 959.60 | 324.70 |
| 24 | 72.10 | 72.10 | 0.00 | 1284.30 | 958.30 | 326.00 |
|
| AVG | 84.38 | 84.34 | 0.05 | 1284.45 | 959.27 | 325.19 |
|
| MAX | 118.00 | 118.00 | 0.90 | 1284.60 | 962.50 | 328.00 |
| MIN | 53.90 | 53.90 | 0.00 | 1284.20 | 956.60 | 321.70 |