Big Creek Sub-Watershed Study: Water and Bed Sediment Quality Relational to Pesticide and Nutrient Concentrations
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The City of Alpharetta, Georgia was awarded a 319(h) grant in 1999 for the study of water and bed sediment quality relational to pesticide and nutrient concentrations in the Big Creek sub-watershed. After changes in personnel and the work plan, monitoring began on the project in April 2004. Big Creek has a watershed area of 103 square miles and is a major sub-watershed of the Chattahoochee River. The Big Creek watershed lies north of Atlanta and includes portions of Cherokee, Fulton and Forsyth Counties, as well as the Cities of Alpharetta, Cumming and Roswell. Twenty-four square miles or 23% of the watershed is within the City limits of Alpharetta and well over half of the watershed drains through Alpharetta. The majority of Alpharetta is within a seven-mile upstream radius of the City of Roswell’s drinking water intake on Big Creek.