Rock Island Dam
Friday May 29, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
| 1 | 82.00 | 57.30 | 24.70 | 612.37 | 571.16 | 41.21 |
| 2 | 136.50 | 120.60 | 15.90 | 612.75 | 573.32 | 39.43 |
| 3 | 171.10 | 147.50 | 23.60 | 612.36 | 573.97 | 38.39 |
| 4 | 156.10 | 141.70 | 14.40 | 612.18 | 572.95 | 39.23 |
| 5 | 146.40 | 134.10 | 12.30 | 612.41 | 572.61 | 39.80 |
| 6 | 152.40 | 140.00 | 12.40 | 612.69 | 573.53 | 39.16 |
| 7 | 170.70 | 147.50 | 23.20 | 612.69 | 573.80 | 38.89 |
| 8 | 180.90 | 148.10 | 32.80 | 612.85 | 574.00 | 38.85 |
| 9 | 183.70 | 148.00 | 35.70 | 612.90 | 574.24 | 38.66 |
| 10 | 186.40 | 147.90 | 38.50 | 612.70 | 574.46 | 38.24 |
| 11 | 172.50 | 147.80 | 24.70 | 612.96 | 574.14 | 38.82 |
| 12 | 171.90 | 147.70 | 24.20 | 612.81 | 574.30 | 38.51 |
| 13 | 172.20 | 148.10 | 24.10 | 612.78 | 574.52 | 38.26 |
| 14 | 168.60 | 147.70 | 20.90 | 612.63 | 574.38 | 38.25 |
| 15 | 160.60 | 148.00 | 12.60 | 612.32 | 574.05 | 38.27 |
| 16 | 148.40 | 136.00 | 12.40 | 612.28 | 573.54 | 38.74 |
| 17 | 143.30 | 131.00 | 12.30 | 612.26 | 572.83 | 39.43 |
| 18 | 120.30 | 108.00 | 12.30 | 612.19 | 572.75 | 39.44 |
| 19 | 115.80 | 103.50 | 12.30 | 611.91 | 572.24 | 39.67 |
| 20 | 94.10 | 81.90 | 12.20 | 612.32 | 571.10 | 41.22 |
| 21 | 92.20 | 77.70 | 14.50 | 612.49 | 570.61 | 41.88 |
| 22 | 97.10 | 71.00 | 26.10 | 612.50 | 571.26 | 41.24 |
| 23 | 155.60 | 105.40 | 50.20 | 612.65 | 572.86 | 39.79 |
| 24 | 171.50 | 113.00 | 58.50 | 612.29 | 573.22 | 39.07 |
|
| AVG | 147.93 | 124.98 | 22.95 | 612.51 | 573.16 | 39.35 |
|
| MAX | 186.40 | 148.10 | 58.50 | 612.96 | 574.52 | 41.88 |
| MIN | 82.00 | 57.30 | 12.20 | 611.91 | 570.61 | 38.24 |