Revision History for U.S. Geological Survey Fact Sheet 2013-3086 

By Kevin J. Gergely and Alexa McKerrow

PAD-US—National Inventory of Protected Areas

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First posted online November 12, 2013

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Revised and reposted August 4, 2016, version 1.1

The text was revised on page 1. The bulleted list and Key Features were revised. Page 2 was added showing a 
graphic from the Protected Areas Database of the United States (PAD-US) Protection Status with comments from 
users.

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Revised and reposted December 9, 2020, version 1.2

The text was minimally revised, images were replaced, and design was updated on pages 1 and 2.