US Army Corps of Engineers

Rock Island Dam

Friday May 29, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage 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