New & Noteworthy

 Press Release: Deficit in Nation's Aquifers Accelerating

 MODFLOW-USG: An Unstructured Grid Version of MODFLOW

 USGS Threatened and Endangered Stations

 Report to Congress: Progress Toward Establishing a National Assessment of Water Availability and Use

 Fact Sheet: Understanding and Managing the Effects of Groundwater Pumping on Streamflow

  Annotated List of Classic Pre-1980 USGS Groundwater Papers on Quantitative Groundwater-Flow Analysis

  WaterNow: Get current water conditions by text or email

  Circular: Streamflow Depletion By Wells: Understanding and Managing the Effects of Groundwater Pumping on Streamflow

USGS Groundwater Watch

USGS maintains a network of active wells to provide basic statistics about groundwater levels.

USGS in Your State

USGS Water Science Centers are located in each state.

Other USGS Water Science Areas

 Water Resources

 Water Quality

 Water Use

 Surface Water

USGS Groundwater Information Pages

The U.S. Geological Survey provides unbiased, timely, and relevant information and studies about groundwater resources of the Nation.