USGS Groundwater Information
Groundwater Resources Program
New & Noteworthy
Technical Announcement: USGS Issues Revised Framework for Hydrogeology of Floridan Aquifer
Press Release: High Plains Aquifer Groundwater Levels Continue to Decline
USGS Groundwater Watch
USGS maintains a network of active wells to provide basic statistics about groundwater levels.
Other Water Topics
USGS in Your State
USGS Water Science Centers are located in each state.
Comparison of Selected Methods for Estimating Groundwater Recharge In Humid Regions
Sorted by Typical Quantity Estimated