Grand Coulee Dam
Friday May 29, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 130.20 | 130.20 | 0.00 | 1269.40 | 964.80 | 304.60 |
| 2 | 119.20 | 119.20 | 0.00 | 1269.60 | 963.80 | 305.80 |
| 3 | 128.60 | 128.60 | 0.00 | 1269.60 | 964.00 | 305.60 |
| 4 | 115.00 | 115.00 | 0.00 | 1269.60 | 963.40 | 306.20 |
| 5 | 96.80 | 96.80 | 0.00 | 1269.70 | 961.50 | 308.20 |
| 6 | 97.00 | 97.00 | 0.00 | 1269.70 | 960.60 | 309.10 |
| 7 | 88.50 | 88.50 | 0.00 | 1269.70 | 960.20 | 309.50 |
| 8 | 84.00 | 84.00 | 0.00 | 1269.90 | 959.20 | 310.70 |
| 9 | 80.90 | 80.90 | 0.00 | 1270.00 | 958.70 | 311.30 |
| 10 | 77.40 | 77.40 | 0.00 | 1270.00 | 958.40 | 311.60 |
| 11 | 77.60 | 77.60 | 0.00 | 1270.10 | 958.10 | 312.00 |
| 12 | 98.80 | 98.80 | 0.00 | 1270.20 | 959.00 | 311.20 |
| 13 | 99.90 | 99.90 | 0.00 | 1270.20 | 959.40 | 310.80 |
| 14 | 98.90 | 98.90 | 0.00 | 1270.30 | 959.40 | 310.90 |
| 15 | 94.70 | 94.70 | 0.00 | 1270.40 | 959.00 | 311.40 |
| 16 | 94.70 | 94.70 | 0.00 | 1270.60 | 958.90 | 311.70 |
| 17 | 97.70 | 97.70 | 0.00 | 1270.60 | 959.00 | 311.60 |
| 18 | 98.40 | 98.40 | 0.00 | 1270.70 | 959.10 | 311.60 |
| 19 | 124.30 | 124.30 | 0.00 | 1270.70 | 961.00 | 309.70 |
| 20 | 131.00 | 131.00 | 0.00 | 1270.70 | 962.30 | 308.40 |
| 21 | 137.40 | 137.40 | 0.00 | 1270.80 | 963.00 | 307.80 |
| 22 | 133.80 | 133.80 | 0.00 | 1271.00 | 962.90 | 308.10 |
| 23 | 147.50 | 147.50 | 0.00 | 1270.90 | 963.90 | 307.00 |
| 24 | 142.50 | 142.50 | 0.00 | 1271.00 | 964.10 | 306.90 |
|
| AVG | 108.12 | 108.12 | 0.00 | 1270.23 | 960.99 | 309.24 |
|
| MAX | 147.50 | 147.50 | 0.00 | 1271.00 | 964.80 | 312.00 |
| MIN | 77.40 | 77.40 | 0.00 | 1269.40 | 958.10 | 304.60 |