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.
USGS hydrologist Amanda Garcia during field work in John Day Oregon. Amanda is known for her expertise in hydrology, groundwater, isotope hydrology, ecohydrology and more.
Public Domain.
Photo provided by Amanda G.
