US Army Corps of Engineers

Rock Island Dam & Reservoir

September 2020

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 5739 239 0 84.51 87.88 82.70 5.17 612.27 612.36 572.69 39.67
2 4576 191 0 59.59 63.08 62.96 0.12 612.06 612.03 570.45 41.58
3 5228 218 0 72.12 72.67 72.67 0.00 612.49 612.35 570.67 41.68
4 5316 222 0 72.89 74.40 74.40 0.00 612.76 612.22 571.02 41.20
5 5572 232 0 72.50 77.24 77.24 0.00 612.75 612.50 571.49 41.01
6 5507 229 0 73.13 76.92 76.92 0.00 612.39 612.31 571.66 40.65
7 5393 225 0 73.96 77.99 75.96 2.03 612.40 612.55 571.95 40.60
8 4927 205 0 66.85 69.27 68.91 0.36 612.06 612.01 570.98 41.03
9 6155 256 0 83.41 86.20 86.20 0.00 611.91 612.25 571.81 40.44
10 6281 262 0 86.19 89.60 89.60 0.00 612.18 612.16 572.07 40.09
11 6382 266 0 87.04 92.24 92.24 0.00 611.37 612.26 572.48 39.78
12 5468 228 0 76.05 77.87 77.87 0.00 612.07 612.12 571.18 40.94
13 4238 177 0 56.27 57.02 57.02 0.00 611.53 612.09 569.22 42.87
14 5555 231 0 70.56 71.80 71.80 0.00 612.04 612.08 568.17 43.91
15 70.60 70.41 64.23 6.17 612.13 612.11 568.35 43.76
16 85.60 89.08 86.55 2.53 612.06 612.16 570.40 41.76
17 76.42 76.47 76.47 0.00 612.24 612.12 569.75 42.37
18 59.90 63.14 62.93 0.21 612.23 612.07 567.46 44.61
19 42.89 42.43 42.43 0.00 612.00 611.61 566.25 45.36
20 57.30 55.44 53.76 1.68 612.44 612.22 567.58 44.64
21 55.83 58.53 58.29 0.25 611.23 611.90 567.47 44.43
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TOT 76337  0        
AVG 5453 227 0 70.65 72.84 71.96 0.88 612.12 612.17 570.15 42.02
MAX 6382   87.04 92.24 92.24 6.17 612.76 612.55 572.69 45.36
MIN 4238   42.89 42.43 42.43 0.00 611.23 611.61 566.25 39.67
BUILDING STRONG®