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+ r <br /> 7 <br /> SCOPE OF STUDY <br /> CHAPEL HILL - CARRBORO, NC SECTION 22 STUDY <br /> STUDY PURPOSE: The purpose of the study will be to develop <br /> a watershed stormwater management plan to assist the Towns <br /> of Chapel Hill and Carrboro, NC, Orange Country, NC and the <br /> University of North Carolina at Chapel Hill with management <br /> of stormwater runoff. This region of North Carolina is <br /> growing rapidly and the growth is placing a strain on the <br /> exiting storm water management facilities in the region <br /> creating flooding more frequently. <br /> STUDY AREA:. The study covers an approximately 60 square <br /> mile area of Orange County, NC which includes the Towns of <br /> Chapel Hill and Carrboro, NC. The enclosed map shows the <br /> general area of the study. There are two major watersheds <br /> in the study area both of which begin west of Chapel Hill <br /> and Carrboro. The Morgan Creek watershed, which is in the <br /> southern portion covers approximately 60 percent of the <br /> study area. The Bolin Creek-Little Creek watershed covers <br /> approximately 40 percent of the area and is in the northern <br /> portion of the study area. The lower limits of the study/ <br /> will be the headwaters of B. Everett Jordan Reservoir. <br /> SCOPE OF STUDY: The main objective will be to develop a <br /> watershed stormwater runoff model and water surface profile <br /> model for the streams within the study area which will <br /> enable the communities involved to better quantify the <br /> volume of stormwater runoff for both present and future land <br /> development. The models will be developed using the latest <br /> technology for stormwater modeliing studies. Field data <br /> where possible will be obtained using GPS technology. Data <br /> will be developed in a manner such that it can be <br /> graphically saved and displayed using the Arc/Info GIS <br /> System. <br /> WORK ITEMS: The study will include the following general <br /> work items: <br /> 1. Watershed model: Develop a stormwater runoff model for <br /> the streams indicated above. The model will be capable of <br /> utilizing input, such as land use, soil types, stream <br /> slopes, and gradients from a GIS database to develop the <br /> hydrologic parameters necessary for the model output. The <br />