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2018 Map of Plumb Bayou

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

USGS Topo · Published 2018

About this map

Atchafalaya Bay and the Gulf of Mexico meet the sprawling marshlands of the Louisiana coast in this detailed coastal survey. The landscape is defined by an intricate network of waterways, where larger channels like Plumb Bayou and Creole Bayou navigate between Rainbow Island and Halters Island. This environment represents the ever-shifting boundary between inland freshwater systems and the open sea, captured through the modern lens of the U.S. Geological Survey.

The boundary between St. Mary Parish and Terrebonne Parish cuts through these wetlands, illustrating how political lines are drawn across fluid coastal geography. Local water features such as Creole Pass and Fourleague Bay provide critical context for understanding maritime navigation and environmental changes along the gulf. The prevalence of named bayous, including Palmetto Bayou and Deer Island Bayou, highlights the complex drainage patterns essential to this low-lying delta region.