US Army Corps of Engineers

Rock Island Dam & Reservoir

June 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 8577 357 0 174.89 178.86 142.30 36.57 612.17 611.97 575.44 36.53
2 7435 310 0 157.70 155.97 116.72 39.24 612.31 612.04 574.20 37.84
3 8790 366 0 183.75 185.65 145.90 39.75 612.27 612.36 575.70 36.66
4 8541 356 0 172.98 175.61 139.75 35.85 611.99 612.04 575.10 36.94
5 8026 334 0 195.88 195.12 132.57 62.55 612.40 612.41 575.94 36.47
6 7024 293 0 184.97 184.57 112.67 71.90 612.22 612.48 575.26 37.22
7 8046 335 0 222.82 216.31 139.21 77.10 612.38 612.23 576.99 35.24
8 7589 316 0 224.53 220.30 129.99 90.30 612.80 612.36 577.16 35.20
9 7736 322 0 239.88 233.50 136.52 96.98 612.28 612.27 577.84 34.43
10 6952 290 0 244.24 234.69 122.13 112.56 612.77 612.39 577.86 34.53
11 4419 184 0 239.95 234.32 77.66 156.66 612.43 612.26 577.22 35.04
12 4705 196 0 213.79 212.21 77.85 134.35 612.68 612.47 575.78 36.69
13 4921 205 0 166.00 164.98 77.97 87.00 612.65 612.00 574.18 37.82
14 6700 279 0 232.21 228.14 115.01 113.13 612.61 612.28 576.94 35.34
15 7931 330 0 260.86 251.83 145.59 106.25 612.30 612.46 579.00 33.46
16 7886 329 0 265.95 259.06 144.09 114.97 612.54 612.59 579.02 33.57
17 7545 314 0 269.87 265.33 139.85 125.48 612.29 612.33 579.08 33.25
18 7857 327 0 267.48 262.54 145.37 117.17 612.54 612.43 579.04 33.39
19 6420 268 0 270.86 265.70 117.33 148.37 611.58 612.16 578.94 33.22
20 6921 288 0 279.00 275.90 130.60 145.30 612.57 612.21 579.54 32.67
21 7508 313 0 276.70 268.69 143.53 125.16 612.70 611.97 579.60 32.37
22 270.88 267.33 133.85 133.49 612.73 612.24 579.32 32.92
23 278.51 275.32 120.80 154.52 612.38 612.25 579.51 32.74
24 283.08 279.16 145.48 133.68 612.51 612.48 580.10 32.38
25 290.91 289.49 142.60 146.89 612.20 612.26 580.60 31.66
26 288.33 282.98 140.18 142.80 612.74 612.45 580.35 32.10
27 291.37 290.00 138.91 151.09 612.12 612.19 580.63 31.56
28 282.58 272.03 138.10 133.93 612.07 612.28 580.01 32.27
29
30
TOT151529  0        
AVG 7216 301 0 240.36 236.63 128.30 108.32 612.40 612.28 577.87 34.41
MAX 8790   291.37 290.00 145.90 156.66 612.80 612.59 580.63 37.84
MIN 4419   157.70 155.97 77.66 35.85 611.58 611.97 574.18 31.56