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I I I I I I I I I I I I I I I I I I I 000998 Road, and some private residences located along Parker Road. A portion of the area adjacent to Arapahoe Road is still used as soccer fields and as a well field for the City of Aurora. The existing property boundaries and proposed land use within the study area are presented on Figure-2, Project Area Map. The proposed uses consi st primarily of single family residential and a large regional commercial retail a rea at the intersect i on of Arapahoe Road and Parker Road. A port i on of the study area is also proposed for small business centers. C. Previous Investigations The Cherry Creek lOa-year floodplain has been previously defined by the U.S. Army Corps of Engineers (Reference-I). This work was recently updated by Greiner Engineering Sciences, Inc. (Reference-3) util izing more detailed and current mapping (see Section II-D). Channelization for Cherry Creek from Arapahoe Road to approximately station 61+50 has been investigated by Law Engi neeri ng, Inc. (see Appendi x-A). Thi s i nformat i on was uti 1 i zed in the development and evaluation of alternatives (see Chapter IV). A flood hazard area deli neat i on report has been prepared for Happy Canyon Creek deli neat i ng the laO-year floodplain (Reference-2). All the above referenced studies addressed the floodplain only and did not investigate alternatives for the drainage problems in Cherry Creek on a.regional basis. Other reports with smaller study areas have been prepared for several of the proposed developments within the study (see Appendix-A). In most cases, these studies addressed the local drainage problems and solutions and generally did not get involved with solutions for Cherry Creek. D. Floodplain Analysis Greiner Engineeering Sciences, Inc. (GREINER) has recently updated the Corps of Engineers (CORP) floodplain (Reference-3). In addition. GREINER has prepared and submitted (March I, 1985) to FEMA for review and approval a flood- -7-