Grand Coulee Dam
Saturday January 31, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 113.40 | 113.40 | 0.00 | 1277.70 | 961.90 | 315.80 |
| 2 | 113.60 | 113.60 | 0.00 | 1277.70 | 961.70 | 316.00 |
| 3 | 116.70 | 116.70 | 0.00 | 1277.70 | 961.90 | 315.80 |
| 4 | 115.80 | 115.80 | 0.00 | 1277.70 | 961.90 | 315.80 |
| 5 | 107.20 | 107.20 | 0.00 | 1277.70 | 961.20 | 316.50 |
| 6 | 113.20 | 113.20 | 0.00 | 1277.80 | 961.40 | 316.40 |
| 7 | 107.20 | 107.20 | 0.00 | 1277.70 | 961.20 | 316.50 |
| 8 | 120.70 | 120.70 | 0.00 | 1277.60 | 962.00 | 315.60 |
| 9 | 100.40 | 100.40 | 0.00 | 1277.70 | 960.90 | 316.80 |
| 10 | 92.00 | 92.00 | 0.00 | 1277.70 | 959.70 | 318.00 |
| 11 | 83.20 | 83.20 | 0.00 | 1277.70 | 958.80 | 318.90 |
| 12 | 79.60 | 79.60 | 0.00 | 1277.80 | 958.30 | 319.50 |
| 13 | 77.50 | 77.50 | 0.00 | 1277.80 | 958.00 | 319.80 |
| 14 | 73.70 | 73.70 | 0.00 | 1277.80 | 957.50 | 320.30 |
| 15 | 71.60 | 71.60 | 0.00 | 1277.80 | 957.00 | 320.80 |
| 16 | 85.30 | 85.30 | 0.00 | 1277.80 | 957.80 | 320.00 |
| 17 | 123.70 | 123.70 | 0.00 | 1277.70 | 961.10 | 316.60 |
| 18 | 155.90 | 155.90 | 0.00 | 1277.70 | 964.40 | 313.30 |
| 19 | 150.70 | 150.70 | 0.00 | 1277.70 | 965.10 | 312.60 |
| 20 | 153.30 | 153.30 | 0.00 | 1277.70 | 965.30 | 312.40 |
| 21 | 140.60 | 140.60 | 0.00 | 1277.70 | 964.60 | 313.10 |
| 22 | 131.70 | 131.70 | 0.00 | 1277.70 | 963.70 | 314.00 |
| 23 | 122.70 | 122.70 | 0.00 | 1277.70 | 962.90 | 314.80 |
| 24 | 121.30 | 121.30 | 0.00 | 1277.60 | 962.60 | 315.00 |
|
| AVG | 111.29 | 111.29 | 0.00 | 1277.72 | 961.29 | 316.43 |
|
| MAX | 155.90 | 155.90 | 0.00 | 1277.80 | 965.30 | 320.80 |
| MIN | 71.60 | 71.60 | 0.00 | 1277.60 | 957.00 | 312.40 |