Groundwater Watch Latest News...

Active Groundwater Level Network
Active Water Level Network national well location map.
Active Well Count
Map generated 5/18/2022 5:46:53 AM
Click here for Groundwater Watch Help Page 
Groundwater Watch
Help Page
Requires Google Earth software installed on your computer. This file is updated daily.  
Download Google
Earth Version
Click here for an animation of the national map 
National Map
GIS Shape File. This file is updated daily.  
Download GIS
Shape File
For a list of network wells, click on a state or territory above or select from the box:

The Active Groundwater Level Network contains water levels and well information from more than 17,320 wells that have been measured by the USGS or USGS cooperators at least once within the past 13 months. This network includes all of these wells, regardless of measurement frequency, aquifer monitored, or the monitoring objective.

The U.S. Geological Survey has a database/archive of about 850,000 wells across the Nation. Information about these wells is available to the world via NWISWeb ( Through various groundwater programs, the USGS actively measures water levels in, or collects data from more than 17,320 of these wells each year. These wells are measured for a variety of disparate purposes, such as statewide monitoring programs, or more local effects like monitoring well drawdown, hydrologic research, aquifer tests, or even earthquake effects on water levels.

There also are a variety of networks among these actively measured wells; a National Climate Response Network for wells, Regional Networks like the High Plains Aquifer Monitoring Program that is designed to monitor storage changes in the High Plains Aquifer, state-based networks that are designed to monitor statewide groundwater conditions, and local networks designed to monitor pumping effects.

Groundwater Watch is maintained by the Office of Groundwater.

Washington Idaho Montana Maine Oregon Minnesota North Dakota Michigan New Hampshire Wisconsin Vermont New York South Dakota Wyoming Massachusetts California Connecticut Rhode Island Nevada Pennsylvania Iowa Utah Nebraska Ohio New Jersey Illinois Indiana Colorado West Virginia Delaware Maryland Virginia Missouri District of Columbia Kansas Kentucky Arizona North Carolina New Mexico Tennessee Oklahoma Texas Arkansas South Carolina Georgia Alabama Mississippi Louisiana Florida Alaska Guam Hawaii Puerto Rico Vermont New Hampshire Massachusetts Rhode Island Connecticut New Jersey Delaware Maryland District of Columbia

*References to non-Department of the Interior (DOI) products do not constitute an endorsement by the DOI.

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Last update: Monday, March 8, 2021 at 12:51
Page Contact Information: Contact the GroundWater Watch Support Team