Rock Island Dam
Tuesday May 19, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 150.60 | 115.00 | 35.60 | 612.80 | 572.62 | 40.18 |
| 2 | 135.10 | 115.00 | 20.10 | 612.59 | 572.41 | 40.18 |
| 3 | 134.00 | 114.60 | 19.40 | 611.99 | 572.40 | 39.59 |
| 4 | 129.60 | 111.00 | 18.60 | 611.89 | 572.05 | 39.84 |
| 5 | 121.20 | 107.60 | 13.60 | 612.29 | 571.95 | 40.34 |
| 6 | 131.90 | 114.70 | 17.20 | 612.57 | 572.35 | 40.22 |
| 7 | 149.40 | 114.70 | 34.70 | 612.58 | 572.38 | 40.20 |
| 8 | 149.30 | 114.60 | 34.70 | 612.29 | 572.11 | 40.18 |
| 9 | 159.60 | 114.80 | 44.80 | 612.47 | 572.65 | 39.82 |
| 10 | 160.90 | 114.60 | 46.30 | 612.61 | 572.72 | 39.89 |
| 11 | 163.50 | 115.00 | 48.50 | 612.70 | 572.87 | 39.83 |
| 12 | 166.30 | 115.00 | 51.30 | 612.76 | 573.00 | 39.76 |
| 13 | 170.70 | 115.10 | 55.60 | 612.49 | 573.51 | 38.98 |
| 14 | 167.80 | 114.70 | 53.10 | 612.55 | 573.32 | 39.23 |
| 15 | 164.70 | 121.20 | 43.50 | 612.47 | 573.11 | 39.36 |
| 16 | 146.00 | 132.00 | 14.00 | 612.04 | 572.73 | 39.31 |
| 17 | 132.10 | 118.60 | 13.50 | 612.11 | 571.48 | 40.63 |
| 18 | 129.40 | 115.70 | 13.70 | 611.94 | 572.89 | 39.05 |
| 19 | 146.00 | 132.50 | 13.50 | 612.11 | 572.95 | 39.16 |
| 20 | 145.90 | 131.80 | 14.10 | 612.64 | 572.64 | 40.00 |
| 21 | 158.40 | 131.40 | 27.00 | 612.63 | 573.14 | 39.49 |
| 22 | 154.20 | 131.70 | 22.50 | 612.67 | 572.92 | 39.75 |
| 23 | 154.20 | 132.00 | 22.20 | 612.79 | 572.78 | 40.01 |
| 24 | 153.60 | 131.50 | 22.10 | 612.64 | 572.89 | 39.75 |
|
| AVG | 148.93 | 119.78 | 29.15 | 612.44 | 572.66 | 39.78 |
|
| MAX | 170.70 | 132.50 | 55.60 | 612.80 | 573.51 | 40.63 |
| MIN | 121.20 | 107.60 | 13.50 | 611.89 | 571.48 | 38.98 |