Grand Coulee Dam
Wednesday August 5, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 73.00 | 73.00 | 0.00 | 1283.80 | 958.20 | 325.60 |
| 2 | 60.90 | 60.90 | 0.00 | 1283.80 | 957.40 | 326.40 |
| 3 | 55.00 | 55.00 | 0.00 | 1283.90 | 956.80 | 327.10 |
| 4 | 52.70 | 52.70 | 0.00 | 1283.90 | 956.50 | 327.40 |
| 5 | 53.60 | 53.60 | 0.00 | 1283.80 | 956.40 | 327.40 |
| 6 | 56.70 | 56.70 | 0.00 | 1283.80 | 956.70 | 327.10 |
| 7 | 56.40 | 56.40 | 0.00 | 1283.90 | 956.40 | 327.50 |
| 8 | 59.10 | 59.10 | 0.00 | 1283.90 | 956.30 | 327.60 |
| 9 | 62.20 | 62.20 | 0.00 | 1284.00 | 956.70 | 327.30 |
| 10 | 59.40 | 59.40 | 0.00 | 1284.00 | 956.40 | 327.60 |
| 11 | 63.70 | 63.70 | 0.00 | 1284.00 | 956.40 | 327.60 |
| 12 | 69.60 | 69.60 | 0.00 | 1284.00 | 956.90 | 327.10 |
| 13 | 77.20 | 77.20 | 0.00 | 1283.90 | 957.70 | 326.20 |
| 14 | 91.90 | 91.90 | 0.00 | 1283.90 | 958.60 | 325.30 |
| 15 | 134.30 | 134.30 | 0.00 | 1283.80 | 962.10 | 321.70 |
| 16 | 135.70 | 135.70 | 0.00 | 1283.80 | 963.40 | 320.40 |
| 17 | 145.20 | 145.20 | 0.00 | 1283.80 | 964.40 | 319.40 |
| 18 | 151.70 | 151.70 | 0.00 | 1283.70 | 965.10 | 318.60 |
| 19 | 155.20 | 155.20 | 0.00 | 1283.70 | 965.70 | 318.00 |
| 20 | 151.50 | 151.50 | 0.00 | 1283.70 | 965.60 | 318.10 |
| 21 | 135.50 | 135.50 | 0.00 | 1283.60 | 964.50 | 319.10 |
| 22 | 115.60 | 114.80 | 0.80 | 1283.60 | 962.90 | 320.70 |
| 23 | 98.50 | 98.40 | 0.10 | 1283.60 | 961.20 | 322.40 |
| 24 | 88.20 | 88.20 | 0.00 | 1283.70 | 959.80 | 323.90 |
|
| AVG | 91.78 | 91.75 | 0.04 | 1283.82 | 959.67 | 324.15 |
|
| MAX | 155.20 | 155.20 | 0.80 | 1284.00 | 965.70 | 327.60 |
| MIN | 52.70 | 52.70 | 0.00 | 1283.60 | 956.30 | 318.00 |