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2015 Map of Martello Castle

Name: 2015 Topographic Map of Martello Castle
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

The Martello Castle landmark stands as a historical sentinel over the coastal marshes where St. Bernard Parish and Orleans Parish meet. This coastal landscape is defined by the massive engineering of the Mississippi River-Gulf Outlet Canal, which cuts a straight diagonal through a labyrinth of natural waterways. The map illustrates a complex hydrologic network of tidal streams, including Bayou Dupre, Terre-Beau Bayou, and Bashman Bayou, which drain the low-lying wetlands into Lake Borgne and the open Gulf of Mexico.

The presence of the canal alongside winding natural bayous like Pirogue Bayou and Shell Beach Bayou demonstrates the modern effort to navigate and manage this shifting deltaic environment. To the south, road access via La 46 and E Judge Perez Dr provides a terrestrial link to this otherwise water-dominated region, marking the boundary between the managed maritime corridor and the sprawling coastal salt marshes.