Practical applications of GIS for water resources Gwinnett County case study
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This paper aims to describe the implementation of Geographic Information Systems (GIS) in the engineering practices of water resources management using Gwinnett County, Georgia as a case study. The availability of sophisticated GIS data sets by local, state, federal and private agencies and the development of standardized data models like ArcHydro have provided a wealth of valuable data enabling the generation of watershed simulation models in a GIS environment. Many of the traditional tasks that engineers and scientists have performed manually can be automated allowing the modeler to perform detailed hydrologic and hydraulic studies in more depth, in less time and of superior quality. Over the past five years, Dewberry has been using Gwinnett County’s GIS datasets to model seven large watersheds within the county providing floodplain maps for both existing and future watershed conditions.