Grand Coulee Dam
Friday June 19, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 158.30 | 158.30 | 0.00 | 1282.90 | 966.20 | 316.70 |
| 2 | 146.30 | 146.30 | 0.00 | 1282.90 | 965.50 | 317.40 |
| 3 | 132.10 | 132.10 | 0.00 | 1283.00 | 964.40 | 318.60 |
| 4 | 128.90 | 128.90 | 0.00 | 1283.00 | 963.60 | 319.40 |
| 5 | 126.20 | 126.20 | 0.00 | 1283.00 | 963.20 | 319.80 |
| 6 | 130.00 | 130.00 | 0.00 | 1283.00 | 963.30 | 319.70 |
| 7 | 117.00 | 117.00 | 0.00 | 1283.00 | 962.60 | 320.40 |
| 8 | 94.50 | 94.50 | 0.00 | 1283.10 | 960.60 | 322.50 |
| 9 | 101.10 | 101.10 | 0.00 | 1283.10 | 960.30 | 322.80 |
| 10 | 114.40 | 114.40 | 0.00 | 1283.10 | 961.60 | 321.50 |
| 11 | 116.40 | 116.40 | 0.00 | 1283.10 | 962.20 | 320.90 |
| 12 | 125.50 | 125.50 | 0.00 | 1283.10 | 962.70 | 320.40 |
| 13 | 122.00 | 122.00 | 0.00 | 1283.10 | 962.60 | 320.50 |
| 14 | 134.10 | 134.10 | 0.00 | 1283.10 | 963.30 | 319.80 |
| 15 | 139.50 | 139.50 | 0.00 | 1283.10 | 964.00 | 319.10 |
| 16 | 152.20 | 152.20 | 0.00 | 1283.10 | 964.90 | 318.20 |
| 17 | 169.40 | 169.40 | 0.00 | 1283.10 | 966.50 | 316.60 |
| 18 | 176.10 | 176.10 | 0.00 | 1283.00 | 967.40 | 315.60 |
| 19 | 189.10 | 189.10 | 0.00 | 1283.00 | 968.60 | 314.40 |
| 20 | 181.30 | 181.30 | 0.00 | 1282.90 | 968.50 | 314.40 |
| 21 | 155.10 | 155.10 | 0.00 | 1283.00 | 967.00 | 316.00 |
| 22 | 130.20 | 130.20 | 0.00 | 1283.00 | 964.60 | 318.40 |
| 23 | 126.60 | 126.60 | 0.00 | 1283.00 | 963.70 | 319.30 |
| 24 | 98.70 | 98.70 | 0.00 | 1283.00 | 961.80 | 321.20 |
|
| AVG | 136.04 | 136.04 | 0.00 | 1283.03 | 964.13 | 318.90 |
|
| MAX | 189.10 | 189.10 | 0.00 | 1283.10 | 968.60 | 322.80 |
| MIN | 94.50 | 94.50 | 0.00 | 1282.90 | 960.30 | 314.40 |