G. G. Phelps

• Chemistry of ground water in the Silver Springs Basin, Florida, with an emphasis on nitrate
• Geochemistry and origins of mineralized waters in the Floridan aquifer system, northeastern Florida
• Geology, hydrology, and water quality of the surficial aquifer system in Volusia County, Florida
• Methods of estimating recharge to the Floridan aquifer in northeast Florida
• Water resources of Duval County, Florida