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1971 Map of Pass A Loutre East

Name: 1971 Topographic Map of Pass A Loutre East
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

Pass A Loutre and its branching distributaries dominate this coastal survey of the Mississippi River Delta, revealing an environment defined by shifting sediments and water. This orthophotomap shows a complex network of waterways, including North Pass and Northeast Pass, where the river meets the Gulf of Mexico. Significant conservation land is identified within the Delta National Wildlife Refuge and the Pass A Loutre State Waterfowl Management Area, preserving vital habitats in this ephemeral landscape.

Maritime and industrial history is recorded through two locations marked Lighthouse (Abandoned), which once guided vessels through the passes, and the emergence of offshore activity in the Block Field. Unique landforms like the North Mud Lumps and the intricate channels of Thomasin Bayou illustrate the constant deltaic transition. This map preserves a specific moment in the delta's evolution, documenting the location of Oil Wells, Platforms, and Sludge Pits amidst the marsh and bays.