Official websites use .gov
A .gov website belongs to an official government organization in the United States.
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.
Water physical and chemical data were collected using current meter and bottle casts from the G.W. PIERCE from October 22, 1975 to October 31, 1975. Data were submitted by Virginia Institute of...
data.gov
An official website of the GSA's Technology Transformation Services