Grand Coulee Dam
Sunday February 1, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 112.80 | 112.80 | 0.00 | 1277.60 | 961.90 | 315.70 |
| 2 | 104.90 | 104.90 | 0.00 | 1277.60 | 961.10 | 316.50 |
| 3 | 101.80 | 101.80 | 0.00 | 1277.60 | 960.60 | 317.00 |
| 4 | 109.30 | 109.30 | 0.00 | 1277.60 | 960.90 | 316.70 |
| 5 | 113.30 | 113.30 | 0.00 | 1277.70 | 961.20 | 316.50 |
| 6 | 116.00 | 116.00 | 0.00 | 1277.60 | 961.50 | 316.10 |
| 7 | 114.10 | 114.10 | 0.00 | 1277.60 | 961.60 | 316.00 |
| 8 | 121.80 | 121.80 | 0.00 | 1277.50 | 962.10 | 315.40 |
| 9 | 101.10 | 101.10 | 0.00 | 1277.60 | 960.70 | 316.90 |
| 10 | 93.20 | 93.20 | 0.00 | 1277.70 | 959.60 | 318.10 |
| 11 | 89.50 | 89.50 | 0.00 | 1277.70 | 959.30 | 318.40 |
| 12 | 85.00 | 85.00 | 0.00 | 1277.70 | 958.90 | 318.80 |
| 13 | 84.00 | 84.00 | 0.00 | 1277.70 | 958.70 | 319.00 |
| 14 | 76.00 | 76.00 | 0.00 | 1277.70 | 957.90 | 319.80 |
| 15 | 79.60 | 79.60 | 0.00 | 1277.60 | 958.00 | 319.60 |
| 16 | 76.80 | 76.80 | 0.00 | 1277.70 | 957.90 | 319.80 |
| 17 | 116.60 | 116.60 | 0.00 | 1277.70 | 960.70 | 317.00 |
| 18 | 136.80 | 136.80 | 0.00 | 1277.60 | 963.30 | 314.30 |
| 19 | 138.10 | 138.10 | 0.00 | 1277.70 | 964.00 | 313.70 |
| 20 | 134.50 | 134.50 | 0.00 | 1277.70 | 963.90 | 313.80 |
| 21 | 124.70 | 124.70 | 0.00 | 1277.70 | 963.20 | 314.50 |
| 22 | 117.90 | 117.90 | 0.00 | 1277.70 | 962.60 | 315.10 |
| 23 | 105.40 | 105.40 | 0.00 | 1277.70 | 961.50 | 316.20 |
| 24 | 103.70 | 103.70 | 0.00 | 1277.70 | 961.00 | 316.70 |
|
| AVG | 106.54 | 106.54 | 0.00 | 1277.65 | 960.92 | 316.73 |
|
| MAX | 138.10 | 138.10 | 0.00 | 1277.70 | 964.00 | 319.80 |
| MIN | 76.00 | 76.00 | 0.00 | 1277.50 | 957.90 | 313.70 |