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1-2 o Water supply o Irrigation o Aquatic life o Recreation and aesthetics o Sewage dilution in order to assure continued high quality water for the above uses. Special Issues Many special issues needed consideration as a part of this master planning effort to achieve the stated goal. These include: o Flood hydrology and low flow hydrology o Hydraulic characteristics of channel o Flood problems o Water rights o Water quality o Mineral resources o Geomorphology and sedimentation o Groundwater o Parks, recreation, and boating needs o River flow control o Sewage effluent discharges o Aesthetics and appearance o Wildlife and aquatic life River Management In effect, the South Platte River master plan is to be a long-term road map for the South Platte River. It is to provide information to understand the problems of the river and to assist in managing and operating the South Platte River from Chatfield Reservoir to Brighton at Baseline Road. STUDY REACHES The South Platte River study area was divided into eight reaches for analy- sis of where problems and solutions tended to have common characteristics. These study reaches are as follows: River Flow It was realized early during the course of the study that most of the time there would not be enough water flowing in the river to satisfy all of the uses. For that reason it was concluded that implementation of the master plan would require the cooperation of all participants, For river flow con. trol in particular, the cooperation and assistance of the following agencies would be required: TABLE 1.1 STUDY REACHES Reach 1 Limits Chatfield Dam to Columbine Dam 2 Columbine Dam to Oxford Avenue o Denver Water Board and Department o U.S. Army Corps of Engineers o State Engineer of Colorado o Irrigators of agricultural land o Colorado Water Conservation Board o Urban Drainage and Flood Control District 3 Oxford Avenue to Bates Avenue 4 Bates Avenue to Colfax Avenue 5 Co if ax Avenue to Cherry Creek the 6 Cherry Creek to Franklin Street 7 Franklin Street to Sand Creek 8 Sand Creek to Baseline Road The objective of the rlver flow control effort would be to optimize South Platte River streamflow from Chatfield to Brighton for: Local Governments in Reach Jefferson County, Arapahoe County, Douglas County, Littleton Columbine V~ley, Littleton, Englewood, Sheridan, Arapahoe County Englewood, Sheridan Denver Denver Denver Commerce City, Adams County Thornton, Adams County, Brighton