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2018 Map of Main Pass

Name: 2018 Topographic Map of Main Pass
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

The Mississippi River delta landscape of Plaquemines Parish unfolds across this survey, dominated by the sprawling waterway of Main Pass as it reaches toward the Gulf of Mexico. This coastal environment is defined by a complex network of wetlands and shallow water bodies, where labels like Flatboat Pond, Cane Pond, and Blackbird Pond suggest the long-standing maritime and waterfowl culture of the region.

Navigational channels and natural cuts carve through the marsh, including Delta Pass, Cottam Pass, and the winding Snow Goose Bayou. These waterways surround low-lying landmasses such as Gaspar Island and Contrariete Island. The map documents the intricate hydrology of the modern delta, tracing the subtle shifts of names and landmarks like Timber Island and Scarabin Island that serve as essential reference points in this ever-changing amphibious terrain.