US Army Corps of Engineers

Rock Island Dam

Friday May 22, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 164.20 147.70 16.50 612.33 573.67 38.66
2 154.10 137.90 16.20 612.21 573.34 38.87
3 155.80 139.60 16.20 612.19 573.40 38.79
4 154.20 138.40 15.80 611.94 573.51 38.43
5 143.50 131.40 12.10 612.13 572.94 39.19
6 140.80 128.60 12.20 612.02 572.94 39.08
7 134.80 122.90 11.90 611.79 572.70 39.09
8 128.00 121.30 6.70 611.91 572.46 39.45
9 123.60 116.70 6.90 612.13 572.41 39.72
10 128.20 121.40 6.80 611.97 572.57 39.40
11 126.60 119.80 6.80 612.01 572.73 39.28
12 140.10 133.30 6.80 611.86 572.94 38.92
13 146.90 135.20 11.70 611.89 573.13 38.76
14 146.30 134.20 12.10 612.16 572.91 39.25
15 146.30 134.00 12.30 612.24 573.38 38.86
16 151.60 139.30 12.30 612.18 573.65 38.53
17 154.20 141.90 12.30 612.31 573.84 38.47
18 161.10 148.60 12.50 612.54 573.89 38.65
19 162.30 149.50 12.80 612.92 573.94 38.98
20 169.30 149.40 19.90 612.63 574.11 38.52
21 162.30 145.80 16.50 612.41 573.92 38.49
22 164.40 147.80 16.60 612.42 573.99 38.43
23 158.30 142.00 16.30 612.20 573.27 38.93
24 122.30 106.30 16.00 612.02 572.16 39.86
AVG 147.47 134.71 12.76 612.18 573.24 38.94
MAX 169.30 149.50 19.90 612.92 574.11 39.86
MIN 122.30 106.30 6.70 611.79 572.16 38.43
BUILDING STRONG®