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.
Example of islands correctly removed from a polygon representing a lake/pond feature. If the islands were simply drawn on top of the lake/pond feature, this would be an overlap error.
Public Domain.
