Circa 1956 Land Area in Coastal Louisiana - Original Data Source - National Wetlands Inventory - Revisions to Georectification
The dataset presented here represents a circa 1956 land/water delineation of coastal Louisiana used in part of a larger study to quantify landscape changes from 1932 to 2016.  The original dataset was created by  the U.S. Fish and Wildlife Service, Office of Biological Services. 
The USGS Wetland and Aquatic Research …