GIS Aids Atlanta Stormwater, Watershed Planning
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The purpose of this paper is to share an approach to watershed and stormwater management that uses Geographic Information Systems (GIS) to advance research and analysis of hydrologic processes and how spatial patterns affect water resources. Expanding understanding of the relationship between geographic activities and water resource management has made GIS tools increasingly valuable. The power of GIS for water resource management lies in the ability to collect, store, manage, query and display multiple datasets together and to model that data For example, land uses, soils, rainfall data, watershed boundaries, land cover, and underground infrastructure and features can all be mapped, attributed, and stored in GIS. At a minimum the various features can be overlaid for analysis. At a higher level, the GIS data relevant to hydrologic/hydraulic modeling can be extracted and modeled without leaving the GIS application. Once GIS has been used to understand the inter-relationships of the features, different scenarios can be run and tested to determine the options for improving storm water runoff. After analyses have been completed, the graphic and mapping capabilities of the GIS are strong tools for conveying the information to the public and to government officials.