Skip to main content
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.
Monitoring location Atchafalaya Bay (ATCH.R.MI.142.0) (Ce 03842) - USGS-292311091221400
Important for you to know:
- Big changes are coming soon to NWISWeb websites and services. Attend our webinar, January 15, 2026 at 2:00 PM EST, to learn about the impacts. Learn more about our modernization plans and timeline.