US Army Corps of Engineers

Rock Island Dam & Reservoir

May 2019

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 7717 322 0 118.19 124.00 111.60 12.41 612.81 612.75 572.57 40.18
2 7224 301 0 109.37 113.75 100.71 13.03 612.84 612.80 571.44 41.36
3 7194 300 0 106.27 111.32 99.57 11.75 612.79 612.80 571.14 41.66
4 6959 290 0 102.50 106.37 95.68 10.69 612.45 612.78 571.01 41.77
5 6374 266 0 95.57 98.70 87.36 11.33 612.73 612.67 570.74 41.93
6 7787 324 0 116.93 120.48 107.94 12.54 612.68 612.69 570.79 41.90
7 6709 280 0 99.47 101.75 89.50 12.25 612.78 612.72 569.75 42.97
8 7473 311 0 110.18 114.04 102.68 11.36 612.73 612.81 570.66 42.15
9 7831 326 0 123.57 125.87 111.34 14.53 612.79 612.73 571.22 41.51
10 9154 381 0 155.41 157.58 142.59 15.00 612.85 612.72 574.05 38.67
11 8492 354 0 139.61 148.26 131.73 16.53 612.72 612.71 574.39 38.32
12 8043 335 0 130.49 136.16 122.79 13.37 612.50 612.68 573.95 38.73
13 8175 341 0 135.87 140.58 125.81 14.77 612.63 612.68 574.16 38.52
14 8848 369 0 149.73 154.07 138.38 15.69 612.64 612.70 574.71 37.99
15 9112 380 0 167.38 169.21 146.55 22.66 612.71 612.71 575.12 37.59
16 8792 366 0 176.88 179.12 143.24 35.88 612.58 612.64 575.59 37.05
17 8813 367 0 151.21 157.68 139.26 18.42 612.71 612.68 574.89 37.79
18 9278 387 0 178.60 179.57 152.93 26.64 612.95 612.74 575.79 36.95
19 9103 379 0 174.50 178.43 149.15 29.28 612.71 612.71 575.74 36.97
20 8961 373 0 162.71 167.96 144.92 23.05 612.68 612.65 575.28 37.37
21 8633 360 0 172.85 174.60 140.23 34.37 612.59 612.72 575.39 37.33
22 8751 365 0 149.63 153.70 136.68 17.02 612.62 612.66 574.57 38.09
23 8533 356 0 142.68 148.65 132.11 16.54 612.67 612.67 574.51 38.16
24 8118 338 0 131.78 137.14 122.72 14.42 612.64 612.71 573.89 38.82
25 8500 354 0 134.97 141.63 127.45 14.19 612.68 612.72 573.04 39.68
26 9049 377 0 145.45 152.20 138.31 13.89 612.66 612.71 573.55 39.16
27 8963 373 0 151.80 157.49 140.95 16.55 612.74 612.70 574.82 37.88
28 8691 362 0 143.90 150.80 135.25 15.54 612.64 612.69 574.60 38.09
29 8737 364 0 147.14 151.38 136.00 15.38 612.65 612.70 574.64 38.06
30 9458 394 0 171.96 175.36 155.40 19.97 612.71 612.74 575.59 37.15
31 9254 386 0 175.25 177.20 152.04 25.15 612.78 612.78 575.78 37.00
TOT258726  0        
AVG 8346 348 0 141.03 145.32 127.77 17.55 612.70 612.72 573.66 39.06
MAX 9458   178.60 179.57 155.40 35.88 612.95 612.81 575.79 42.97
MIN 6374   95.57 98.70 87.36 10.69 612.45 612.64 569.75 36.95