Rock Island Dam
Saturday May 30, 2026
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Forebay Elevation | Tailwater Elevation | Average Head |
|---|
| 1 | 167.50 | 125.80 | 41.70 | 612.42 | 573.73 | 38.69 |
| 2 | 173.20 | 141.90 | 31.30 | 612.36 | 573.40 | 38.96 |
| 3 | 152.80 | 136.60 | 16.20 | 612.19 | 573.05 | 39.14 |
| 4 | 121.40 | 105.40 | 16.00 | 612.20 | 572.24 | 39.96 |
| 5 | 114.60 | 102.60 | 12.00 | 611.89 | 571.99 | 39.90 |
| 6 | 116.10 | 104.20 | 11.90 | 612.09 | 572.46 | 39.63 |
| 7 | 127.40 | 115.30 | 12.10 | 612.33 | 572.41 | 39.92 |
| 8 | 103.80 | 96.90 | 6.90 | 612.53 | 571.07 | 41.46 |
| 9 | 119.10 | 102.40 | 16.70 | 612.26 | 573.05 | 39.21 |
| 10 | 141.10 | 134.20 | 6.90 | 612.51 | 573.75 | 38.76 |
| 11 | 142.10 | 135.20 | 6.90 | 612.30 | 572.62 | 39.68 |
| 12 | 120.80 | 113.70 | 7.10 | 612.27 | 572.94 | 39.33 |
| 13 | 109.20 | 97.10 | 12.10 | 611.84 | 572.11 | 39.73 |
| 14 | 96.30 | 84.40 | 11.90 | 611.86 | 571.65 | 40.21 |
| 15 | 90.20 | 78.30 | 11.90 | 611.67 | 571.92 | 39.75 |
| 16 | 87.80 | 76.10 | 11.70 | 611.54 | 571.57 | 39.97 |
| 17 | 84.70 | 73.10 | 11.60 | 611.66 | 571.10 | 40.56 |
| 18 | 56.70 | 44.50 | 12.20 | 612.25 | 570.91 | 41.34 |
| 19 | 72.90 | 60.50 | 12.40 | 612.15 | 572.05 | 40.10 |
| 20 | 88.90 | 71.40 | 17.50 | 612.53 | 571.13 | 41.40 |
| 21 | 114.80 | 27.60 | 87.20 | 612.15 | 572.05 | 40.10 |
| 22 | 159.60 | 140.00 | 19.60 | 612.22 | 573.64 | 38.58 |
| 23 | 163.20 | 146.80 | 16.40 | 612.56 | 573.34 | 39.22 |
| 24 | 168.00 | 131.00 | 37.00 | 612.60 | 573.22 | 39.38 |
|
| AVG | 120.51 | 101.88 | 18.63 | 612.18 | 572.39 | 39.79 |
|
| MAX | 173.20 | 146.80 | 87.20 | 612.60 | 573.75 | 41.46 |
| MIN | 56.70 | 27.60 | 6.90 | 611.54 | 570.91 | 38.58 |