New in GWRP

• Regional Groundwater Studies
  • Groundwater Availability in the United States
• Water Availability Pilot
  • Consumptive water use coefficients for Great Lakes Basin
• Groundwater & the Environment
  • Groundwater Recharge in Southwestern US
• Methods & Modeling
  • SEAWAT v4--Simulation of 3D variable-density ground--water flow and transport
• Data & Information
  • Water-Level changes in aquifers of the Atlantic Coastal Plain, predevelopment to 2000

USGS in Your State

USGS Water Science Centers are located in each state.

USGS Groundwater Resources Program

The Groundwater Resources Program provides the objective scientific information and develops the interdisciplinary understanding necessary to assess and quantify the availability of the Nation's groundwater resources.

Regional Groundwater Studies Overview of USGS Regional Groundwater Studies Groundwater Availability Water Availability & Use Methods and Modeling Geophysical Methods Fiber-Optic Distributed Temperature Sensing Estimating Groundwater Recharge in Humid Areas Groundwater Model Development Data & Information Principal Aquifers in US High Plains Water-Level Monitoring Project Groundwater Level Data Active Groundwater Level Network Climate Response Network Real-Time Groundwater Level Network

Groundwater & the Environment Recharge Climate Variability Effects Groundwater Age Dating & Recharge Chloride Mass Balance in Streams to Estimate Recharge Karst & Fractured Rock Publications GWRP Bibliography Selected USGS Groundwater Publications USGS Publications Warehouse USGS Library About the Groundwater Resources Program About GWRP Fact Sheet about GWRP Contact the USGS Groundwater Resources Program online Call the USGS Groundwater Resources Program at 703-648-5001. For general USGS questions, contact Ask USGS online or call 1-888-ASK-USGS (1-888-275-8747)