USGS
David Nelms is the groundwater specialist for the U.S. Geological Survey, Virginia Water Science Center in Richmond, Virginia. He has over 31 years of experience studying groundwater flow systems across Virginia and the eastern United States. His main focus has been fractured-rock and karst aquifers, groundwater/surface-water relations, groundwater-age dating, aquifer susceptibility, and groundwater contamination. Nelms holds a B.S. in Geology from Virginia Tech.