US Army Corps of Engineers

Rock Island Dam

Tuesday August 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 70.10 70.20 0.00 611.89 570.26 41.63
2 39.80 39.80 0.00 611.86 569.46 42.40
3 25.80 25.80 0.00 612.07 569.05 43.02
4 26.20 26.20 0.00 612.27 569.05 43.22
5 23.10 23.10 0.00 612.45 568.64 43.81
6 33.70 33.70 0.00 612.15 569.26 42.89
7 69.20 69.20 0.00 612.37 569.37 43.00
8 92.70 92.70 0.00 612.32 569.59 42.73
9 79.20 79.20 0.00 612.29 569.31 42.98
10 81.90 81.90 0.00 611.99 569.59 42.40
11 84.20 84.20 0.00 611.76 569.75 42.01
12 89.80 89.80 0.00 611.47 569.92 41.55
13 80.20 80.20 0.00 611.54 569.58 41.96
14 76.00 76.00 0.00 611.72 569.21 42.51
15 67.40 67.40 0.00 611.99 569.16 42.83
16 67.70 67.70 0.00 611.91 569.10 42.81
17 79.90 79.90 0.00 611.77 569.40 42.37
18 84.00 84.00 0.00 612.00 571.10 40.90
19 153.60 153.60 0.00 611.38 572.27 39.11
20 149.30 149.30 0.00 611.49 571.54 39.95
21 121.10 121.10 0.00 612.15 570.38 41.77
22 128.30 128.40 0.00 612.35 570.40 41.95
23 118.00 118.00 0.00 612.14 570.23 41.91
24 67.30 67.30 0.00 612.31 567.53 44.78
AVG 79.52 79.53 0.00 611.98 569.71 42.27
MAX 153.60 153.60 0.00 612.45 572.27 44.78
MIN 23.10 23.10 0.00 611.38 567.53 39.11
BUILDING STRONG®