Grand Coulee Dam
Wednesday January 21, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 145.40 | 145.40 | 0.00 | 1280.70 | 964.90 | 315.80 |
| 2 | 131.40 | 131.40 | 0.00 | 1280.70 | 963.80 | 316.90 |
| 3 | 129.70 | 129.70 | 0.00 | 1280.70 | 963.40 | 317.30 |
| 4 | 138.70 | 138.70 | 0.00 | 1280.70 | 963.90 | 316.80 |
| 5 | 138.20 | 138.20 | 0.00 | 1280.70 | 964.10 | 316.60 |
| 6 | 143.80 | 143.80 | 0.00 | 1280.60 | 964.30 | 316.30 |
| 7 | 141.40 | 141.40 | 0.00 | 1280.60 | 964.30 | 316.30 |
| 8 | 152.30 | 152.30 | 0.00 | 1280.60 | 964.90 | 315.70 |
| 9 | 157.90 | 157.90 | 0.00 | 1280.50 | 965.70 | 314.80 |
| 10 | 141.30 | 141.30 | 0.00 | 1280.60 | 964.80 | 315.80 |
| 11 | 130.60 | 130.60 | 0.00 | 1280.60 | 963.60 | 317.00 |
| 12 | 137.00 | 137.00 | 0.00 | 1280.50 | 963.70 | 316.80 |
| 13 | 130.00 | 130.00 | 0.00 | 1280.50 | 963.30 | 317.20 |
| 14 | 120.30 | 120.30 | 0.00 | 1280.50 | 962.60 | 317.90 |
| 15 | 116.30 | 116.30 | 0.00 | 1280.60 | 962.30 | 318.30 |
| 16 | 100.20 | 100.20 | 0.00 | 1280.60 | 961.00 | 319.60 |
| 17 | 142.20 | 142.20 | 0.00 | 1280.60 | 963.50 | 317.10 |
| 18 | 150.20 | 150.20 | 0.00 | 1280.50 | 965.00 | 315.50 |
| 19 | 162.50 | 162.50 | 0.00 | 1280.40 | 966.10 | 314.30 |
| 20 | 164.00 | 164.00 | 0.00 | 1280.40 | 966.60 | 313.80 |
| 21 | 158.10 | 158.10 | 0.00 | 1280.40 | 966.30 | 314.10 |
| 22 | 152.20 | 152.20 | 0.00 | 1280.50 | 965.90 | 314.60 |
| 23 | 155.40 | 155.40 | 0.00 | 1280.50 | 965.90 | 314.60 |
| 24 | 122.60 | 122.60 | 0.00 | 1280.50 | 963.90 | 316.60 |
|
| AVG | 140.07 | 140.07 | 0.00 | 1280.56 | 964.32 | 316.24 |
|
| MAX | 164.00 | 164.00 | 0.00 | 1280.70 | 966.60 | 319.60 |
| MIN | 100.20 | 100.20 | 0.00 | 1280.40 | 961.00 | 313.80 |