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<br />Numerous reservoirs have been constructed in the South Pl atte River Basin <br />for various reasons. While all exert some localized impact on the river, in <br />most cases their impact, with the exception of major flood control facili- <br />ties, is minimal on the response of the entire system. Five major water <br />supply reservoirs are located within the study reach of the South Pl atte <br />River: 1) Cheeseman; 2) Antero; 3) Eleven-Mile Canyon; 4) Strontia Springs; <br />and 5) Spinney Mountain. Three major flood control reservoirs which provide <br />significant control of the South Platte River exist within the study basin. <br />These facilities are: 1) Chatfield; 2) Cherry Creek; and 3) Bear Creek. <br />Cherry Creek Dam is located on Cherry Creek 12 miles upstream from the con- <br />fluence with the South Platte River, Chatfield Reservoir is located on the <br />South Platte River just downstream of its confluence with Plum Creek and up- <br />stream of the study area, and Bear Creek Dam is located on Bear Creek 8 <br />miles upstream of its confluence with the South Platte River. Major South <br />Platte River tributaries and reservoirs are shown on Figures 1 and 2. <br /> <br /> <br /> <br /> <br />~AIRPLAY <br /> <br />~. <br />....... % <br />.....$'0 6 <br />\ ..,~ F: ". <br />". orlr <br /> <br />STUDY REACH DESCRIPTION <br />In the reach of the South Platte River lying in Adams County, development in <br />the floodplains is primarily agricultural with occasional sand and gravel <br />mining operations. In the reach from Sand Creek to Franklin Street, flood- <br />plain development consists of meat processing plants, truck farms, and the <br />Metropolitan Denver Sewage Oisposal District treatment plant. The reach <br />from Franklin Street to the confluence of Cherry Creek is characterized by <br />railroad yards and industrial facilities. The reach from Cherry Creek to <br />Colfax Avenue includes a large portion of the Central Platte Valley and is a <br />1 argely undeveloped floodplain and railroad yards. From Colfax to Evans, <br />the South Platte floodplain is heavily urbanized and the South Platte River <br />itself is channelized. The reach from Evans Avenue to Oxford Avenue is sub- <br />urban with large industrial facilities including the Littleton/Englewood <br />Sewage Treatment Pl ant and a Publ ic Service Company power generating pl ant. <br />At the upper end of the study reach, the South Platte River divides a wild- <br />life park and a golf course. <br /> <br />10 0 <br />~-_- - '\LJ <br /> <br />Obstructions to flood flows within the study reach consist mainly of manmade <br />structures including bridges, drop structures, and diversion dams. During <br /> <br />&" <br /> <br />j..~NV":~~~~ <br /> <br />Bear Creek <br />Reservoir '. <br />,..-..8eor ~. f--'--'" Cherry <br />~- ,Creek <br />---... St t' . Reservoir <br />ran 10 <br />" Springs <br />"" Reservoir <br />...~th ~~!-i1h.!:L<!!.te <br /> <br />/" ..' f <br /> <br />10 20 <br />. <br /> <br />Scale in Miles <br /> <br />- 3- <br /> <br /> <br /> <br />. CAS~' LE <br />~\" ;oc c> <br />. 1J: <br />.;: ,/ <br />. ~3 , . <br />nl~ /~' <br /> <br /> <br />30 40 <br />. <br /> <br />50 <br />I <br /> <br />FIGURE <br /> <br />SOUTH PLATTE RIVER <br />BASIN MAP <br /> <br />WRIGHT WATER ENGINEERS,INC. <br />2490 W. 26TH AVE.-SUITE 55A <br />DENVER, COLORADO 80211 <br />