New & Noteworthy

 CFP: Conduit Flow Process for MODFLOW-2005

 GSFLOW: A New Model for Simulation of Ground-Water and Surface-Water Interaction

 SEAWAT v4: Simulation of 3D Variable-Density Ground-Water Flow and Transport

USGS in Your State

USGS Water Science Centers are located in each state.

Selected Ground-Water Issues

(Note: There are numerous ground-water issues, of which only a few are listed below.)

• Evolving issues and practices in managing ground-water resources - Case studies on the role of science (USGS Circular 1247)
• Artifical Recharge
• Freshwater-Saltwater Interactions along the Atlantic Coast
• Ground-water and Surface-water Interactions
• Karst
• Land Subsidence
• Unsaturated Zone
• Ground-Water Networks