USGS Ground-water Programs
http://water.usgs.gov/ogw/programs.html

USGS

This USGS site offers a jumping-off point for many national water resources programs, including the Ground-Water Resources Program, the Collection of Basic Records Program, the National Water Quality Assessment Program, the Toxic Substances Hydrology Program, and Water Science for Schools. The site also features links to water use information for the US and a directory of local offices for water resources.

Subject: Geoscience:Hydrology:Ground Water:Water and society, policy, and management, Water quality/chemistry , Water supply/water resource evaluation
Resource Type: Scientific Resources:Collection
Theme: Teach the Earth:Teaching Topics:Water, Teach the Earth:Course Topics:Hydrology/Hydrogeology