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Yan Song and Tracy HaddenCo-PIs. Due to their polluted watersheds, populated areas nationwide struggle with major threats to public and environmental health. The EPA has identified non-point source pollution, or contaminated storm water runoff from developed areas, as the most significant source of this pollution. Negative impacts from runoff may have irreversible consequences for watershed structure and threaten drinking water supplies and habitat. Funded by the Environmental Protection Agency, the research sought to develop a better understanding  of the relationship between land-use change and water quality in order to empower policy makers to protect watersheds. A simulation was developed to integrate a dynamic model of land-use and transportation change with a model of storm water impacts for select water quality constituents. This model improves on work done with previous models relating land use and water quality by incorporating a detailed urban form typology with a spatially explicit model of watershed hydrology. This model leverages current work at UNC by developing a regional model of land-use change to forecast emissions related to air quality in the Charlotte, North Carolina metro area.