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<br />1-4 <br /> <br />STUDY REACHES <br />The South PlatteRlv.... study area was divided into eight reaches fo ranaly- <br />sis of where problems and solutions tended to have Celrmlon characteristics. <br />These study reaches are as follows: <br /> <br />TABLE 1-1 <br />STUDYREACftES <br /> <br />Reach <br /> <br />Limits <br />Chatfield Dam to Coll.l11bineOam <br /> <br />1 <br /> <br />I <br /> <br />Columhin.. OiJll1to Oxford Avenue <br /> <br />3 <br /> <br />Oxford Avenue to Bates Avenue <br /> <br />4 <br /> <br />Bates Avenue to Colfa~ Avenue <br /> <br />5 <br /> <br />Colfax Avenue to Cherry Creek <br /> <br />6 <br /> <br />Cherry Creek to hanklin Street <br /> <br />, <br /> <br />Franklin Street to SanJ Creek <br /> <br />8 <br /> <br />Sand Creek to 6aseltne Road <br /> <br />PHASE A <br />The Phase A report WdS published In August, 1984 after a lengthy review of <br />tne report draft by all project sponsors, project advisors, andrlldnyinter_ <br />estedparties. The report was made available for revie\lto individuals and <br />organizations such as the Denver Audubon Society and the Colorado White_ <br />water Association. <br /> <br />The Phase A scope of work included detal1ed research and analysis of: study <br />area; hydrology and hydraulics: flood problems; river flow: water riqhts; <br />water quality; mineral resources; geomorphology; sedimentation and erosion; <br />groundwater resources; parks: recreatiOn; open space; design criteria; <br />design alternatives, their evaluation and costing; a study of beneift_cost <br />ratios: develOPment of recommended alternatives, reach_hy_reach; and devel- <br />oponentof a river management plan. <br /> <br />local Governments in Reach <br />JeffersonCounty,Arapahoe <br />County, Douglas County, <br />Littleton <br /> <br />C01umbineValley,Littleton, <br />Englewood,Sheridan, <br />Arapahoe County <br /> <br />I <br />, <br /> <br />Englewood, Sheridan <br /> <br />for each reachuf the river nine alternatives were analyzed. Thea1terna- <br />tivesincluded: <br /> <br />~nver <br /> <br />Denver <br /> <br />Denver <br /> <br />Co.lI~erce City, Ad <tTIS County <br /> <br />Thornton, AdMlS County, <br />Briqhton <br /> <br />I- <br />I. <br />3. <br />4. <br />5. <br />5. <br />,. <br />8. <br />9. <br /> <br />Maintain existing configuration, <br />Natural type waterway, <br />Lined channels, <br />Limited structural improv€nlents, <br />Acquisition of floodplain land, <br />NOn-structural, <br />Relocation of channel, <br />Other, <br />Combinations. <br /> <br />It was in Adams County that selections of the best alternate was most diff_ <br />icult because of the desire to mine the river bed and have larqe lakes <br />thrOU9hwhich the river would flow. water quality aspects of lake limno. <br />loqy and sf'diment starving of the river eliminated Cnnsidf'ration of the <br />on~stream lakes. <br />