Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Google Analytics Dashboard for Potentiometric surface of the Aquia Aquifer in southern Maryland, September 1990

Potentiometric surface of the Aquia Aquifer in southern Maryland, September 1990

URI: https://pubs.usgs.gov/publication/ofr92459

Display as: