An official website of the United States government. Here's how you knowHere's how you know
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.
Latest Earthquake | Chat Share
Explore all data by the topics and refine type to find the digital information in a format suitable for direct input to software that can analyze its meaning in the scientific, engineering, or business context for which the data were collected.
Real-Time Earthquake Data
Earthquake Daily Data
Earthquake Activity Maps
Map of real-time streamflow compared to historical streamflow for the day of the year (Tennessee)
The chemistry of streams and lakes have been monitored in Loch Vale since 1983. Changes in stream and lake chemistry have been traced to variations in climate and atmospheric deposition of pollutants. Samples are collected throughout the year in Loch Vale. This provides information on seasonal variations in stream and lake chemistry.