US Army Corps of Engineers

Rock Island Dam & Reservoir

May 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 4892 204 0 75.06 74.64 65.22 9.42 612.29 612.06 568.30 43.76
2 6447 269 0 98.39 99.75 88.46 11.29 612.15 612.11 569.20 42.91
3 5687 237 0 86.28 89.23 78.50 10.73 611.25 612.06 568.85 43.21
4 7233 301 0 117.13 117.96 108.11 9.85 611.96 612.17 572.16 40.01
5 7212 300 0 111.93 117.36 106.84 10.52 612.09 612.29 572.86 39.43
6 5954 248 0 94.12 99.39 89.57 9.82 610.99 612.00 571.80 40.20
7 5241 218 0 87.31 83.61 73.83 9.78 612.22 612.11 569.99 42.12
8 4880 203 0 75.73 77.02 67.99 9.03 612.48 612.05 570.45 41.60
9 6244 260 0 102.10 102.10 90.55 11.54 612.36 612.16 570.50 41.66
10 144.05 149.40 137.50 11.90 612.13 612.20 573.36 38.84
11 138.92 144.89 130.05 14.85 612.08 612.21 573.38 38.83
12 152.46 154.60 139.27 15.33 612.53 612.22 573.51 38.71
13 162.20 167.90 153.23 14.67 611.29 611.84 575.08 36.76
14 160.27 163.40 149.95 13.45 611.88 611.95 575.14 36.81
15 146.99 152.71 140.81 11.90 611.49 612.03 574.40 37.63
16 126.07 134.56 120.53 14.03 611.20 612.13 573.72 38.41
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TOT 53790  0        
AVG 5977 249 0 117.44 120.53 108.78 11.76 611.90 612.10 572.04 40.06
MAX 7233   162.20 167.90 153.23 15.33 612.53 612.29 575.14 43.76
MIN 4880   75.06 74.64 65.22 9.03 610.99 611.84 568.30 36.76