US Army Corps of Engineers

Rock Island Dam & Reservoir

October 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 4574 191 0 62.98 63.03 60.37 2.66 611.97 612.00 568.01 43.99
2 4302 179 0 56.30 56.60 55.68 0.92 612.30 612.06 566.90 45.16
3 3592 150 0 61.81 59.80 48.10 11.70 612.66 612.44 567.88 44.56
4 4555 190 0 59.50 61.99 61.13 0.87 612.29 612.03 568.59 43.44
5 5513 230 0 74.66 77.41 75.65 1.76 611.26 612.20 569.09 43.11
6 3623 151 0 53.31 53.11 48.17 4.94 611.74 612.19 567.46 44.73
7 4401 183 0 61.26 57.65 56.24 1.41 612.29 612.18 566.99 45.19
8 5921 247 0 82.43 89.47 80.56 8.91 610.81 612.29 569.00 43.29
9 2546 106 0 32.92 32.53 32.36 0.17 611.01 611.44 565.65 45.79
10 3756 156 0 51.52 50.00 48.95 1.06 611.41 612.08 566.86 45.22
11 4190 175 0 60.80 57.49 55.29 2.20 612.63 611.99 568.06 43.93
12 6002 250 0 89.73 92.40 85.41 7.00 612.47 612.25 570.33 41.92
13 5362 223 0 71.89 77.56 77.56 0.00 611.19 612.07 571.23 40.84
14 3620 151 0 52.13 51.66 51.66 0.00 611.18 611.84 570.25 41.59
15 4232 176 59.22 59.92 59.48 0.44 611.44 612.10 569.75 42.35
16 51.30 52.17 52.07 0.10 611.23 612.00 568.92 43.08
17 65.80 66.75 61.99 4.75 611.44 612.00 569.40 42.60
18 41.13 41.34 41.31 0.03 611.31 611.88 568.68 43.20
19 74.35 71.97 68.62 3.36 612.37 611.95 569.10 42.85
20 51.27 54.57 54.55 0.02 611.56 611.79 568.25 43.54
21 71.21 71.72 69.88 1.84 612.08 612.01 568.72 43.29
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TOT 66189  0        
AVG 4413 184 0 61.22 61.86 59.29 2.58 611.74 612.04 568.53 43.51
MAX 6002   89.73 92.40 85.41 11.70 612.66 612.44 571.23 45.79
MIN 2546   32.92 32.53 32.36 0.00 610.81 611.44 565.65 40.84