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.
The elevation of zero gage height has been determined to be 3,960.23 feet above NAVD 1988. To obtain stream water-surface elevation values in NAVD 1988 add 3,960.23 feet to gage height values.
