US Army Corps of Engineers

Rock Island Dam

Sunday April 12, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 160.40 144.20 16.20 612.77 573.13 39.64
2 176.40 147.80 28.60 612.89 573.35 39.54
3 184.20 148.90 35.30 612.79 573.86 38.93
4 183.40 149.30 34.10 612.68 573.83 38.85
5 181.40 149.60 31.80 612.77 573.92 38.85
6 183.20 149.50 33.70 612.84 574.14 38.70
7 183.10 149.00 34.10 612.77 574.26 38.51
8 182.80 148.70 34.10 612.85 574.32 38.53
9 184.90 148.30 36.60 612.86 574.37 38.49
10 176.90 148.20 28.70 612.82 574.35 38.47
11 182.80 148.90 33.90 612.76 574.46 38.30
12 178.30 149.00 29.30 612.74 574.46 38.28
13 177.50 148.40 29.10 612.74 574.49 38.25
14 174.20 148.40 25.80 612.81 574.26 38.55
15 150.70 137.90 12.80 612.48 573.38 39.10
16 125.40 112.80 12.60 612.20 572.37 39.83
17 104.80 92.80 12.00 611.26 571.94 39.32
18 94.90 83.20 11.70 610.93 571.72 39.21
19 78.50 67.40 11.10 610.29 570.76 39.53
20 67.60 56.50 11.10 610.46 570.42 40.04
21 98.60 86.50 12.10 609.89 573.14 36.75
22 115.10 102.50 12.60 611.41 571.42 39.99
23 124.20 110.50 13.70 612.48 571.70 40.78
24 149.00 134.50 14.50 612.55 573.70 38.85
AVG 150.76 127.62 23.15 612.21 573.24 38.97
MAX 184.90 149.60 36.60 612.89 574.49 40.78
MIN 67.60 56.50 11.10 609.89 570.42 36.75
BUILDING STRONG®