1947 Map of Lake Athanasio
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1947 Map of Lake Athanasio

USGS Topo · Published 1947

About this map

Lake Athanasio and the surrounding marshlands of St Bernard Parish are depicted here prior to significant coastal erosion and modern hydrological changes. Based on aerial photography and a 1935 field examination, the survey documents a complex network of wetlands where Chandeleur Sound meets the interior basins. Waterways like Canal Pecal and Mulatto Bayou thread through the unstable geography, illustrating the fluid border between the Gulf and the delta. Further south, the boundary between St Bernard Parish and Plaquemines Parish crosses through Black Bay, a region defined by landmarks such as Mozambique Pt and Pt Fortuna. Significant water bodies including Lake Machias and Seven Dollar Bay dominate the central portion of the sheet, providing a primary record of the coastal landforms and named points like Coon Nest I and Fiddler Pt during the mid-1940s.


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Map Details

Date Portrayed1947
Date Published1947
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:31,680
Physical Dimensions16.9 x 20.8 inches

Editions of this 1947 Lake Athanasio Map

This is the sole edition of this map. No revisions or reprints were ever made.


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Source Details

CopyrightPublic Domain