Grand Coulee Dam
Sunday January 18, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 140.80 | 140.80 | 0.00 | 1281.60 | 964.80 | 316.80 |
| 2 | 138.90 | 138.90 | 0.00 | 1281.70 | 964.40 | 317.30 |
| 3 | 138.60 | 138.60 | 0.00 | 1281.70 | 964.30 | 317.40 |
| 4 | 143.10 | 143.10 | 0.00 | 1281.60 | 964.60 | 317.00 |
| 5 | 143.20 | 143.20 | 0.00 | 1281.60 | 964.70 | 316.90 |
| 6 | 147.20 | 147.20 | 0.00 | 1281.60 | 964.90 | 316.70 |
| 7 | 145.90 | 145.90 | 0.00 | 1281.50 | 965.10 | 316.40 |
| 8 | 148.40 | 148.40 | 0.00 | 1281.50 | 965.30 | 316.20 |
| 9 | 148.80 | 148.80 | 0.00 | 1281.50 | 965.50 | 316.00 |
| 10 | 143.10 | 143.10 | 0.00 | 1281.50 | 964.90 | 316.60 |
| 11 | | | | | | |
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|
| AVG | 143.80 | 143.80 | 0.00 | 1281.58 | 964.85 | 316.73 |
|
| MAX | 148.80 | 148.80 | 0.00 | 1281.70 | 965.50 | 317.40 |
| MIN | 138.60 | 138.60 | 0.00 | 1281.50 | 964.30 | 316.00 |