US Army Corps of Engineers

Rock Island Dam & Reservoir

May 2021

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 6504 271 0 104.30 105.35 94.49 10.87 612.44 612.06 572.20 39.86
2 112.01 115.09 104.74 10.35 612.00 612.01 573.13 38.88
3 113.77 118.46 105.67 12.79 611.32 611.71 572.61 39.10
4 137.01 142.16 129.13 13.03 611.34 611.36 573.98 37.38
5 129.66 133.74 120.88 12.86 611.22 611.38 573.50 37.88
6 127.51 136.16 123.58 12.58 610.65 610.85 573.86 36.99
7 123.15 124.37 111.09 13.28 612.19 611.25 573.07 38.18
8 132.92 138.80 125.37 13.43 611.44 611.41 573.96 37.45
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TOT 6504  0        
AVG 6504 271 0 122.54 126.77 114.37 12.40 611.58 611.50 573.29 38.21
MAX 6504   137.01 142.16 129.13 13.43 612.44 612.06 573.98 39.86
MIN 6504   104.30 105.35 94.49 10.35 610.65 610.85 572.20 36.99