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 of Glacier Bay National Park and Preserve and the study area surrounding the West Arm. The drainage divide separates basins that drain to the west from those that drain to the east.
Public Domain.
