Grand Coulee Dam
Monday May 4, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 130.10 | 130.10 | 0.00 | 1251.60 | 963.90 | 287.70 |
| 2 | 115.50 | 115.50 | 0.00 | 1251.60 | 962.30 | 289.30 |
| 3 | 109.80 | 109.80 | 0.00 | 1251.60 | 961.40 | 290.20 |
| 4 | 109.00 | 109.00 | 0.00 | 1251.60 | 961.20 | 290.40 |
| 5 | 110.90 | 110.90 | 0.00 | 1251.70 | 961.20 | 290.50 |
| 6 | 130.70 | 130.70 | 0.00 | 1251.60 | 962.60 | 289.00 |
| 7 | 130.80 | 130.80 | 0.00 | 1251.60 | 963.10 | 288.50 |
| 8 | 147.90 | 147.90 | 0.00 | 1251.60 | 964.40 | 287.20 |
| 9 | 139.60 | 139.60 | 0.00 | 1251.60 | 964.40 | 287.20 |
| 10 | 118.60 | 118.60 | 0.00 | 1251.60 | 962.60 | 289.00 |
| 11 | 126.60 | 126.60 | 0.00 | 1251.60 | 962.70 | 288.90 |
| 12 | 126.00 | 126.00 | 0.00 | 1251.60 | 962.90 | 288.70 |
| 13 | 141.50 | 141.50 | 0.00 | 1251.50 | 964.10 | 287.40 |
| 14 | 151.00 | 151.00 | 0.00 | 1251.50 | 965.00 | 286.50 |
| 15 | 156.20 | 156.20 | 0.00 | 1251.50 | 965.70 | 285.80 |
| 16 | 149.50 | 149.50 | 0.00 | 1251.60 | 965.40 | 286.20 |
| 17 | 183.50 | 183.50 | 0.00 | 1251.40 | 968.40 | 283.00 |
| 18 | 183.50 | 183.50 | 0.00 | 1251.40 | 968.40 | 283.00 |
| 19 | 185.40 | 185.40 | 0.00 | 1251.40 | 968.80 | 282.60 |
| 20 | 172.50 | 172.50 | 0.00 | 1251.30 | 968.50 | 282.80 |
| 21 | 166.50 | 166.50 | 0.00 | 1251.30 | 967.80 | 283.50 |
| 22 | 169.70 | 169.70 | 0.00 | 1251.20 | 967.90 | 283.30 |
| 23 | 153.20 | 153.20 | 0.00 | 1251.30 | 966.90 | 284.40 |
| 24 | 136.90 | 136.90 | 0.00 | 1251.30 | 965.50 | 285.80 |
|
| AVG | 143.54 | 143.54 | 0.00 | 1251.50 | 964.80 | 286.70 |
|
| MAX | 185.40 | 185.40 | 0.00 | 1251.70 | 968.80 | 290.50 |
| MIN | 109.00 | 109.00 | 0.00 | 1251.20 | 961.20 | 282.60 |