Laserfiche WebLink
<br />111-2 <br /> <br />~~on t h <br /> <br />January <br />February <br />March <br />April <br />May <br />Ju ne <br />July <br />August <br />September <br />Oc tober <br />November <br />December <br /> <br />Avg . Annual <br /> <br />TABLE 111-1 <br /> <br />the water storage provided by the dams is primarily for municipal and indus, <br />trial water supply with any flood storage being incidental. Any additional <br />water supply reservoirs planned will probably have similar characteristics <br />and, consequently, will have little impact on flood hydrology. <br /> <br />CLIMATOLOGICAL DATA COMPARISON <br /> <br />GAGE STATION <br /> <br />Flood Control Reservoirs <br />Three major flood control reservoirs which provide significant control of <br />the South Platte River exist within this study basin. These facilities are: <br />(1) Chatfield, (2) Cherry Creek, and (3) Bear Creek. Table III-2 summarizes <br />some of the most important characteristics of the reservoirs. <br /> <br />Grant (Elevation 8,667) Denver WSFO (Elevation 5,286) <br />Prec i pit at i on Temperature Precipitati on Temperature <br />(i nch) ( of ) (i nch) (OF) <br />0.55 20.0 0.61 29,9 <br />0.42 24.2 0.67 32.8 <br />0.91 29.2 1. 21 37.0 <br />1. 40 36.3 1. 93 47.5 <br />2,08 44.4 2.64 57.0 <br />1. 31 54.0 1. 93 65,0 <br />2,23 58.9 1.78 73.0 <br />1.85 56.7 1. 29 71.6 <br />1.20 50.3 1.13 62,8 <br />1. 22 40,8 1.13 52.0 <br />0.67 28.4 0.76 39.4 <br />u.76 23.0 0,43 32.6 <br /> <br />TABLE III-2 <br />FLOOD CONTROL RESERVIOR PARAMETERS <br /> <br />Storage (Acre-feet) <br /> <br /> Permanent* Surcharge <br />Reservoir Total Pool Flood Control Above Spi 11 way <br />Chatfield 231,430 26,660 204,740 115,760 <br />Cherry Creek 93, 920 13,960 79,960 134,470 <br />Be ar Creek 30,810 1,910 28,830 47,440** <br /> <br />14.60 <br /> <br />49.3 <br /> <br />*Permanent pool storage includes recreational/multipurpose pools and sedi- <br />ment control volumes. <br /> <br />15,Sl <br /> <br />38.8 <br /> <br />**Above top of flood control pool. <br /> <br />Cherry Creek Dam 1 oc ated 12 mi 1 es ups tream from the mou th of Cherry Creek <br />was the first of the reservoirs completed, first storing water in 1957. <br />This reservoir controls 386 square miles of the Cherry Creek basin. <br /> <br />Chatfield Reservoir is located on the South Platte River just downstream of <br />its confluence with Plum Creek. This dam was closed in 1973 and is primari. <br />ly a flood control facility for 3,018 square miles of drainage basin encom- <br />passing all geographical regions. <br />