Grand Coulee Dam
Tuesday June 16, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 159.30 | 159.30 | 0.00 | 1281.00 | 966.90 | 314.10 |
| 2 | 143.40 | 143.40 | 0.00 | 1281.00 | 965.70 | 315.30 |
| 3 | 131.90 | 131.90 | 0.00 | 1281.10 | 964.50 | 316.60 |
| 4 | 111.70 | 111.70 | 0.00 | 1281.20 | 962.80 | 318.40 |
| 5 | 110.80 | 110.80 | 0.00 | 1281.20 | 962.20 | 319.00 |
| 6 | 117.40 | 117.40 | 0.00 | 1281.20 | 962.60 | 318.60 |
| 7 | 106.10 | 106.10 | 0.00 | 1281.20 | 962.10 | 319.10 |
| 8 | 89.50 | 89.50 | 0.00 | 1281.20 | 960.40 | 320.80 |
| 9 | 90.80 | 90.80 | 0.00 | 1281.30 | 960.00 | 321.30 |
| 10 | 89.70 | 89.70 | 0.00 | 1281.30 | 960.00 | 321.30 |
| 11 | 92.00 | 92.00 | 0.00 | 1281.40 | 960.10 | 321.30 |
| 12 | 101.10 | 101.10 | 0.00 | 1281.40 | 960.60 | 320.80 |
| 13 | 106.20 | 106.20 | 0.00 | 1281.30 | 961.20 | 320.10 |
| 14 | 114.10 | 114.10 | 0.00 | 1281.30 | 961.80 | 319.50 |
| 15 | 116.50 | 116.50 | 0.00 | 1281.40 | 962.10 | 319.30 |
| 16 | 134.60 | 134.60 | 0.00 | 1281.50 | 963.50 | 318.00 |
| 17 | 144.50 | 144.50 | 0.00 | 1281.50 | 964.60 | 316.90 |
| 18 | 164.40 | 164.40 | 0.00 | 1281.40 | 966.00 | 315.40 |
| 19 | 158.80 | 158.80 | 0.00 | 1281.40 | 966.40 | 315.00 |
| 20 | 164.70 | 164.70 | 0.00 | 1281.40 | 966.70 | 314.70 |
| 21 | 156.60 | 156.60 | 0.00 | 1281.40 | 966.40 | 315.00 |
| 22 | 139.50 | 139.50 | 0.00 | 1281.50 | 965.20 | 316.30 |
| 23 | 126.00 | 126.00 | 0.00 | 1281.50 | 963.70 | 317.80 |
| 24 | 105.90 | 105.90 | 0.00 | 1281.60 | 962.30 | 319.30 |
|
| AVG | 123.98 | 123.98 | 0.00 | 1281.32 | 963.24 | 318.08 |
|
| MAX | 164.70 | 164.70 | 0.00 | 1281.60 | 966.90 | 321.30 |
| MIN | 89.50 | 89.50 | 0.00 | 1281.00 | 960.00 | 314.10 |