US Army Corps of Engineers

Rock Island Dam

Saturday August 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 128.70 108.60 20.10 611.82 570.73 41.09
2 70.10 50.50 19.70 612.08 568.72 43.36
3 77.90 58.10 19.80 612.28 569.80 42.48
4 99.30 79.10 20.20 612.37 570.40 41.97
5 89.00 68.50 20.50 612.14 569.59 42.55
6 99.10 79.10 20.10 612.34 569.84 42.50
7 92.50 71.00 21.50 612.71 569.67 43.04
8 115.50 68.40 47.00 612.43 570.76 41.67
9 137.20 83.70 53.50 612.41 572.15 40.26
10 176.80 155.80 21.00 611.95 573.37 38.58
11 160.60 148.60 12.00 611.70 572.97 38.73
12 114.60 102.30 12.40 611.73 571.99 39.74
13 78.80 67.30 11.50 611.27 569.84 41.43
14 65.50 54.20 11.30 611.25 570.16 41.09
15 57.70 46.00 11.70 611.82 570.51 41.31
16 48.00 36.00 12.10 611.76 569.53 42.23
17 45.30 33.60 11.60 611.17 569.64 41.53
18 53.90 39.10 14.80 611.37 569.70 41.67
19 63.80 48.40 15.40 611.70 569.26 42.44
20 76.80 56.10 20.70 612.23 569.31 42.92
21 78.30 57.20 21.10 612.04 569.40 42.64
22 93.00 72.50 20.50 611.78 569.34 42.44
23 114.80 95.00 19.80 611.49 570.53 40.96
24 111.30 90.50 20.80 612.35 569.45 42.90
AVG 93.69 73.73 19.96 611.92 570.28 41.65
MAX 176.80 155.80 53.50 612.71 573.37 43.36
MIN 45.30 33.60 11.30 611.17 568.72 38.58
BUILDING STRONG®