Grand Coulee Dam
Saturday April 11, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 136.50 | 136.50 | 0.00 | 1253.60 | 964.00 | 289.60 |
| 2 | 132.20 | 132.20 | 0.00 | 1253.50 | 964.00 | 289.50 |
| 3 | 129.40 | 129.40 | 0.00 | 1253.60 | 963.80 | 289.80 |
| 4 | 128.50 | 128.50 | 0.00 | 1253.50 | 963.80 | 289.70 |
| 5 | 128.80 | 128.80 | 0.00 | 1253.50 | 963.90 | 289.60 |
| 6 | 130.20 | 130.20 | 0.00 | 1253.50 | 964.10 | 289.40 |
| 7 | 107.70 | 107.70 | 0.00 | 1253.50 | 962.70 | 290.80 |
| 8 | 107.20 | 107.20 | 0.00 | 1253.50 | 962.10 | 291.40 |
| 9 | 90.40 | 90.40 | 0.00 | 1253.50 | 961.00 | 292.50 |
| 10 | 88.50 | 88.50 | 0.00 | 1253.50 | 960.50 | 293.00 |
| 11 | 83.40 | 83.40 | 0.00 | 1253.50 | 960.00 | 293.50 |
| 12 | 84.40 | 84.40 | 0.00 | 1253.60 | 959.80 | 293.80 |
| 13 | 81.00 | 81.00 | 0.00 | 1253.60 | 959.40 | 294.20 |
| 14 | 75.20 | 75.20 | 0.00 | 1253.70 | 958.70 | 295.00 |
| 15 | 77.50 | 77.50 | 0.00 | 1253.70 | 958.40 | 295.30 |
| 16 | 78.00 | 78.00 | 0.00 | 1253.70 | 958.20 | 295.50 |
| 17 | 90.90 | 90.90 | 0.00 | 1253.70 | 958.90 | 294.80 |
| 18 | 95.30 | 95.30 | 0.00 | 1253.70 | 959.20 | 294.50 |
| 19 | 143.20 | 143.20 | 0.00 | 1253.60 | 962.60 | 291.00 |
| 20 | 156.80 | 156.80 | 0.00 | 1253.50 | 965.00 | 288.50 |
| 21 | 155.20 | 155.20 | 0.00 | 1253.60 | 965.40 | 288.20 |
| 22 | 143.90 | 143.90 | 0.00 | 1253.60 | 964.70 | 288.90 |
| 23 | 148.80 | 148.80 | 0.00 | 1253.60 | 964.70 | 288.90 |
| 24 | 134.10 | 134.10 | 0.00 | 1253.60 | 964.00 | 289.60 |
|
| AVG | 113.63 | 113.63 | 0.00 | 1253.58 | 962.04 | 291.54 |
|
| MAX | 156.80 | 156.80 | 0.00 | 1253.70 | 965.40 | 295.50 |
| MIN | 75.20 | 75.20 | 0.00 | 1253.50 | 958.20 | 288.20 |