US Army Corps of Engineers

Rock Island Dam

Thursday June 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 193.50 147.70 45.80 612.27 575.11 37.16
2 193.80 147.80 46.00 612.38 574.97 37.41
3 193.60 147.50 46.10 612.35 575.03 37.32
4 192.90 146.90 46.00 612.20 575.06 37.14
5 183.60 146.90 36.70 612.22 574.70 37.52
6 186.90 146.30 40.60 611.92 574.70 37.22
7 187.50 147.10 40.40 611.83 574.78 37.05
8 160.50 119.60 40.90 612.27 574.21 38.06
9 169.80 128.60 41.20 612.44 574.21 38.23
10 183.10 141.90 41.20 612.28 574.72 37.56
11 169.00 127.70 41.30 612.83 573.08 39.75
12 172.70 105.00 67.70 612.43 573.45 38.98
13 180.50 111.50 69.00 612.24 574.27 37.97
14 193.10 133.80 59.30 612.28 574.22 38.06
15 172.10 105.80 66.30 612.54 573.46 39.08
16 187.20 120.60 66.60 612.21 573.89 38.32
17 181.70 139.40 42.30 612.62 573.99 38.63
18 179.20 136.90 42.30 612.90 573.49 39.41
19 195.80 124.80 71.00 612.29 575.08 37.21
20 205.60 142.10 63.50 612.14 575.22 36.92
21 195.30 145.80 49.50 612.52 574.73 37.79
22 195.90 146.80 49.10 612.79 574.84 37.95
23 205.50 147.50 58.00 612.55 575.40 37.15
24 203.60 147.40 56.20 612.53 575.06 37.47
AVG 186.77 135.64 51.12 612.38 574.49 37.89
MAX 205.60 147.80 71.00 612.90 575.40 39.75
MIN 160.50 105.00 36.70 611.83 573.08 36.92
BUILDING STRONG®