E. Randolph McFarland

• Groundwater-quality data and regional trends in the Virginia coastal plain, 1906-2007
• Design, revisions, and considerations for continued use of a ground-water-flow model of the coastal plain aquifer system in Virginia
• Ground-Water Flow, Geochemistry, and Effects of Agricultural Practices on Nitrogen Transport at Study Sites in the Piedmont and Coastal Plain
• Ground-water flow, geochemistry, and effects of agricultural practices on nitrogen transport at study sites in the Piedmont and Coastal Plain physiographic provinces, Patuxent River Basin, Maryland
• Hydrogeologic framework and ground-water flow in the Fall Zone of Virginia
• Hydrogeologic framework, analysis of ground-water flow, and relations to regional flow in the fall zone near Richmond, Virginia
• Relation of land use to nitrogen concentration in ground water in the Patuxent River Basin, Maryland
• Sediment distribution and hydrologic conditions of the Potomac aquifer in Virginia and parts of Maryland and North Carolina
• The Virginia coastal plain hydrogeologic framework