Grand Coulee Dam
Friday January 30, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 128.40 | 128.40 | 0.00 | 1278.20 | 963.80 | 314.40 |
| 2 | 124.80 | 124.80 | 0.00 | 1278.20 | 963.30 | 314.90 |
| 3 | 124.10 | 124.10 | 0.00 | 1278.20 | 963.20 | 315.00 |
| 4 | 128.50 | 128.50 | 0.00 | 1278.20 | 963.60 | 314.60 |
| 5 | 124.50 | 124.50 | 0.00 | 1278.20 | 963.30 | 314.90 |
| 6 | 154.20 | 154.20 | 0.00 | 1278.10 | 965.20 | 312.90 |
| 7 | 156.30 | 156.30 | 0.00 | 1278.00 | 966.10 | 311.90 |
| 8 | 155.40 | 155.40 | 0.00 | 1278.00 | 966.40 | 311.60 |
| 9 | 143.80 | 143.80 | 0.00 | 1278.00 | 965.50 | 312.50 |
| 10 | 119.50 | 119.50 | 0.00 | 1278.00 | 963.60 | 314.40 |
| 11 | 111.40 | 111.40 | 0.00 | 1278.10 | 962.50 | 315.60 |
| 12 | 103.50 | 103.50 | 0.00 | 1278.00 | 961.70 | 316.30 |
| 13 | 102.20 | 102.20 | 0.00 | 1278.00 | 961.40 | 316.60 |
| 14 | 99.40 | 99.40 | 0.00 | 1277.90 | 960.80 | 317.10 |
| 15 | 96.60 | 96.60 | 0.00 | 1278.00 | 960.40 | 317.60 |
| 16 | 92.10 | 92.10 | 0.00 | 1278.00 | 959.50 | 318.50 |
| 17 | 148.20 | 148.20 | 0.00 | 1277.90 | 963.50 | 314.40 |
| 18 | 153.50 | 153.50 | 0.00 | 1277.90 | 965.30 | 312.60 |
| 19 | 153.50 | 153.50 | 0.00 | 1277.90 | 965.50 | 312.40 |
| 20 | 151.50 | 151.50 | 0.00 | 1277.70 | 965.40 | 312.30 |
| 21 | 141.80 | 141.80 | 0.00 | 1277.80 | 964.80 | 313.00 |
| 22 | 134.90 | 134.90 | 0.00 | 1277.90 | 964.10 | 313.80 |
| 23 | 117.40 | 117.40 | 0.00 | 1277.90 | 962.70 | 315.20 |
| 24 | 115.50 | 115.50 | 0.00 | 1277.80 | 962.10 | 315.70 |
|
| AVG | 128.38 | 128.38 | 0.00 | 1278.00 | 963.49 | 314.51 |
|
| MAX | 156.30 | 156.30 | 0.00 | 1278.20 | 966.40 | 318.50 |
| MIN | 92.10 | 92.10 | 0.00 | 1277.70 | 959.50 | 311.60 |