Grand Coulee Dam
Saturday June 20, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 85.80 | 85.80 | 0.00 | 1283.00 | 960.20 | 322.80 |
| 2 | 74.00 | 74.00 | 0.00 | 1283.00 | 958.90 | 324.10 |
| 3 | 64.80 | 64.80 | 0.00 | 1283.10 | 957.90 | 325.20 |
| 4 | 63.80 | 63.80 | 0.00 | 1283.20 | 957.50 | 325.70 |
| 5 | 64.80 | 64.80 | 0.00 | 1283.30 | 957.30 | 326.00 |
| 6 | 84.10 | 84.10 | 0.00 | 1283.30 | 958.00 | 325.30 |
| 7 | 76.50 | 76.50 | 0.00 | 1283.40 | 957.70 | 325.70 |
| 8 | 66.70 | 66.70 | 0.00 | 1283.40 | 956.90 | 326.50 |
| 9 | 56.70 | 56.70 | 0.00 | 1283.50 | 955.90 | 327.60 |
| 10 | 60.50 | 60.50 | 0.00 | 1283.60 | 956.10 | 327.50 |
| 11 | 60.40 | 60.40 | 0.00 | 1283.60 | 956.30 | 327.30 |
| 12 | 61.60 | 61.60 | 0.00 | 1283.70 | 956.40 | 327.30 |
| 13 | 64.70 | 64.70 | 0.00 | 1283.70 | 956.60 | 327.10 |
| 14 | 60.30 | 60.30 | 0.00 | 1283.80 | 956.40 | 327.40 |
| 15 | 64.10 | 64.10 | 0.00 | 1283.90 | 956.60 | 327.30 |
| 16 | 72.10 | 72.10 | 0.00 | 1284.00 | 957.30 | 326.70 |
| 17 | 99.00 | 99.00 | 0.00 | 1284.00 | 959.60 | 324.40 |
| 18 | 111.70 | 111.70 | 0.00 | 1284.00 | 961.30 | 322.70 |
| 19 | 122.00 | 122.00 | 0.00 | 1284.10 | 962.10 | 322.00 |
| 20 | 116.10 | 116.10 | 0.00 | 1284.10 | 962.10 | 322.00 |
| 21 | 114.40 | 114.40 | 0.00 | 1284.20 | 961.80 | 322.40 |
| 22 | 111.00 | 111.00 | 0.00 | 1284.20 | 961.50 | 322.70 |
| 23 | 115.10 | 115.10 | 0.00 | 1284.20 | 961.70 | 322.50 |
| 24 | 105.90 | 105.90 | 0.00 | 1284.20 | 961.30 | 322.90 |
|
| AVG | 82.34 | 82.34 | 0.00 | 1283.69 | 958.64 | 325.05 |
|
| MAX | 122.00 | 122.00 | 0.00 | 1284.20 | 962.10 | 327.60 |
| MIN | 56.70 | 56.70 | 0.00 | 1283.00 | 955.90 | 322.00 |