US Geological Survey

The National Ground-Water Monitoring Network (NGWMN) activities are conducted under the authority of the Omnibus Public Land Management Act of 2009 (Secure Water Act), reauthorized in 2024. This Network is a product of the Subcommittee on Ground Water of the Federal Advisory Committee on Water Information (ACWI). The NGWMN is a compilation of selected groundwater monitoring wells from Federal, State, and local groundwater monitoring networks across the nation. The design for the National Ground-Water Monitoring Network is presented in the document 'A National Framework for Ground-Water Monitoring in the United States'.

The NGWMN Data Portal provides access to groundwater data from multiple, dispersed databases in a web-based mapping application. The portal contains current and historical data including water levels, water quality, lithology, and well construction. The NGWMN is currently in the process of adding new data providers to the Network. Agencies or organizations collecting groundwater data can find out more about becoming a data provider for the Network.

Funding to support data providers to the National Ground-Water Monitoring Network is provided through USGS Cooperative Agreements. Agencies can also find information about the status of the USGS cooperative agreements.

New (1/30/2026): The USGS National Groundwater Monitoring Network (NGWMN) Cooperative Funding Opportunity for 2026 to support the NWGMN will be open from January 30, 2026, through March 26, 2026.

Interested agencies may apply online at Grants.gov under funding opportunity number G26AS00002. More information about the funding opportunity is available on the NGWMN Portal under the Program Announcement tab. Applications will be accepted until 4PM EST on March 26, 2026. Applications will only be accepted electronically through Grants.gov; paper copies will not be accepted. The Program Announcement contains the requirements and other guidance for submitting proposals.

Three webinars are scheduled to provide information to all potential applicants:

February 3, 2026 at 2:00 pm EST

February 5, 2026 at 3:00 pm EST

Feburary 9, 2026 at 11:00 am EST

One webinar is scheduled to provide specific information for applicants interested in participating as new data providers.

February 4, 2026 at 12:00 pm EST

Please click the desired date to access webinar information.

If you have questions about the National Ground-Water Monitoring Network Program, please contact: 

Rod Caldwell 

caldwell@usgs.gov