US Army Corps of Engineers

Rock Island Dam

Wednesday April 8, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 140.10 128.20 11.90 611.48 572.59 38.89
2 113.10 100.90 12.20 612.17 571.83 40.34
3 116.30 103.90 12.40 612.21 572.26 39.95
4 113.90 101.60 12.30 612.16 572.38 39.78
5 121.90 111.20 10.70 611.56 572.67 38.89
6 145.90 135.70 10.20 610.74 574.13 36.61
7 157.70 147.90 9.80 610.92 574.16 36.76
8 153.00 146.40 6.60 611.67 573.92 37.75
9 149.90 143.20 6.70 611.69 573.95 37.74
10 136.30 129.60 6.70 611.57 573.60 37.97
11 136.10 129.50 6.60 611.22 573.62 37.60
12 119.60 112.80 6.80 611.34 572.99 38.35
13 121.80 111.50 10.30 611.24 572.61 38.63
14 106.90 96.70 10.20 611.22 572.03 39.19
15 67.00 56.30 10.70 611.53 570.97 40.56
16 56.80 46.40 10.40 611.36 570.78 40.58
17 57.60 47.10 10.50 611.40 570.56 40.84
18 58.10 47.80 10.30 610.62 570.43 40.19
19 67.30 57.20 10.10 610.58 571.72 38.86
20 134.20 124.20 10.00 610.82 572.56 38.26
21 140.50 128.90 11.60 611.20 572.84 38.36
22 140.10 128.20 11.90 611.76 572.03 39.73
23 124.00 111.90 12.10 611.97 571.97 40.00
24 123.40 111.10 12.30 612.04 571.92 40.12
AVG 116.73 106.59 10.14 611.44 572.44 39.00
MAX 157.70 147.90 12.40 612.21 574.16 40.84
MIN 56.80 46.40 6.60 610.58 570.43 36.61
BUILDING STRONG®