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.
Example maps of VegDRi and QuickDRI maps, produced to measure vegetation's response to drought conditions in a project led by the U.S. Geological Survey Earth Resources Observation and Science (EROS) Center.
Public Domain.
