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USGS Groundwater Information

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New & Noteworthy

USGS Groundwater Watch

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

 [Image: USGS active water level wells location map.]

USGS in Your State

USGS Water Science Centers are located in each state.

 [Map: There is a USGS Water Science Center office in each State.] Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Other USGS Water Science Areas

USGS Groundwater Data

The U.S. Geological Survey provides unbiased, timely, and relevant data on the groundwater resources of the Nation:

Groundwater Levels

Groundwater Watch

[Active Groundwater Level Network Map]

The USGS Groundwater Watch web sites group related wells and data from National Water Information System (NWIS) active well networks and provide basic statistics about the groundwater-level data. Networks include the Active Groundwater Level Network, the Climate Response Network, the Real-Time Groundwater Level Network, regional and state networks, and more.

National Water Information System

 [Image: Sample hydrograph.]

NWISWeb is the online interface to the USGS National Water Information System (NWIS) database. NWIS includes more than 850,000 records of wells, springs, test holes, tunnels, drains, and excavations in the United States. Data from groundwater-level measurements can be accessed through web forms, maps, and web services.

Water Data Mobile Notifications

 [Screenshot of the text messages from Water Now]

USGS WaterAlert sends email or text messages when certain time-series measurements at USGS sites exceed user-definable thresholds.

Water Now enables users to send an email or text message with a USGS site number to and quickly receive a reply with the most recent measurement.

National Ground-Water Monitoring Network

 [Screenshot of the NGWMN web site]

The National Ground-Water Monitoring Network (NGWMN) compiles selected groundwater monitoring wells from Federal, State, and local groundwater monitoring networks across the nation, including the USGS NWISWeb. The NGWMN is a product of the Subcommittee on Groundwater of the Federal Advisory Committee on Water Information.

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Ground Water Atlas of the U.S.

 [Map from the Ground Water Atlas of the U.S.]

The Ground Water Atlas of the United States describes the location, hydrologic characteristics, and geologic characteristics of the principal aquifers throughout the 50 States, Puerto Rico, and the U.S. Virgin Islands. Published in 2000, the Atlas provides key descriptive information in a regional and national context.

Principal Aquifers Map

 [Map of the principal aquifers of the United States]

A two-dimensional map of the principal aquifers of the Nation was published in 2003. The map, derived from the Ground Water Atlas, indicates the areal extent of the uppermost principal aquifers on a national scale.

Regional Groundwater Studies

 [Map of current regional groundwater availability studies]

The USGS studies groundwater at the regional scale to improve our understanding of groundwater availability and quality in major aquifers across the Nation.

National Geologic Map Database

 [Screenshot: National Geologic Map Database web site]

The National Cooperative Geologic Mapping Program (NCGMP) provides accurate geologic maps and three-dimensional framework models that help to sustain and improve the quality of life and economic vitality of the Nation and to mitigate natural hazards.

National Aquifer Code Reference List

 [Screenshot: National Aquifer Code Reference List]

The National Aquifer Code Reference List provides the USGS National Water Information System (NWIS) codes used for the principal U.S. aquifers and information about the aquifers.

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Groundwater Flow and Transport Models

Groundwater Models

 [Visualization of groundwater heads in a model]

As of October 1, 2016, all USGS groundwater flow and transport models on which new USGS publications are based are available online. Models can be searched and downloaded through or the USGS Science Data Catalog.

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Water Use

Water Use in the U.S.

 [Map: Groundwater withdrawals in the U.S. in 2010]

The USGS compiles water-use information aggregated at the county, state, and national levels. Every five years, data at the county level are compiled into a national water-use data system and state-level data are published in a national circular.

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Groundwater Quality Data

USGS Water-Quality Data Web Site

 [Screenshot of USGS Water-Quality Data Web Site]

The USGS collects, analyzes, archives, and disseminates data and information describing the quality of the Nation's groundwater resources. Visit the USGS Water-Quality Data web site to find about more about what USGS water-quality groundwater data are available.

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Local Water Data In Your Area

Contact Your Local USGS Office

 [Map: There is a USGS Water Science Center office in each State.]

For other local USGS water information or data, contact the USGS Water Science Center in your area by selecting the state or region:

Science in Your Watershed

 [Map: Science in Your Watershed]

The Science in Your Watershed web site enables you to locate scientific information organized on a watershed basis.

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Other Water Data Resources

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Page Last Modified: Monday, 18-Dec-2017 17:19:48 EST