The Effect of Urbanization on Water Runoff in the Big Creek Watershed
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This study examines the effect of urban growth on a watershed in north Atlanta. Aerial photography and a geographic information system are used to assess vegetation change between 1986 and 1993 while daily precipitation and water runoff data for the watershed are examined for changes in runoff. A model of the relationship between precipitation and runoff reveals the extent to which the land development between 1986 and 1993 has affected water drainage in this region. Results indicate prior planning is wise to avoid potential drainage and flooding problems that can develop in rapidly growing areas. Keywords: aerial photography, GIS, urbanization, water runoff, flooding.