Skip to main content

Contact USGS Water Data for the Nation feedback

Important for you to know:

  • Big changes are coming soon to NWISWeb websites and services. Attend our webinar, January 15, 2026 at 2:00 PM EST, to learn about the impacts. Learn more about our modernization plans and timeline.
  • Scheduled Maintenance Notice
    USGS will be performing maintenance on the time series data processing system beginning at 08:00 EST on January 13, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 3 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.
Questions or Comments
for https://waterdata.usgs.gov/nd/nwis/gw
A red asterisk (*) indicates a required field
Let us help you to:
Your Contact Information
Please select any that apply

See our privacy statement

Note: when your comment or question is successfully sent, you will see a new page with a Thank You message.

Please use the link on the Thank You page to quickly return to where you started.