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.
Map showing the location of identified moderate-temperature and high-temperature geothermal systems in the United States. Each system is represented by a black dot. From the 2008 USGS Geothermal Resource Assessment (Fact Sheet 2008–3082).
Public Domain.
