About this Guide

Content and images were produced by Larry Allain (Scientist Emeritus) of the USGS Wetland and Aquatic Research Center and Chris Reid of Louisiana State University.

The images in this application are not copyrighted and are in the public domain. If you would like to use any of them please credit the artist or institution as credited under the image.

This website is updated periodically when data and images become available. If you believe any of the data or photographs are in error, please notify Sarai Piazza at piazzas@usgs.gov.