Simulation of Ground-Water Flow and Nitrate Transport in the Upper Floridan Aquifer in the Southwestern Albany Area, Georgia
Gordon, Debbie Warner
Payne, Dorothy F.
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The Albany Water, Gas, and Light Commission is concerned about high levels of nitrate upgradient of their well field southwest of Albany, Georgia. The U.S. Geological Survey is developing a ground-water flow and particle-transport model in a 1,500-square-mile area surrounding the well field to determine groundwater flowpaths and potential movement of nitrate contaminated water. Predictive simulations using a variety of pumping and boundary conditions are being used to assess possible pathways of nitrate migration and the potential for the Flint River to contribute water to the well field. Steady-state simulations using MODFLOW–2000 are being calibrated to October 1999 water levels and estimates of baseflow using differential streamflow at successive streamgaging stations. Potential nitrate pathways and rates of movement are being simulated using MODPATH.