1953 Map of Eastern Isles Dernieres, 1959 Print
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1953 Map of Eastern Isles Dernieres

USGS Topo · Published 1959

About this map

The Isles Dernieres barrier chain stretches across this coastal survey, separating the open Gulf of Mexico from the intricate marshlands of southern Louisiana. This mid-century view captures the transition of the landscape toward industrial use, most notably with the establishment of the Lake Pelto Oil Field. Within the protected waters of Lake Pelto, symbols for a Radio Mast and Dolphins indicate active maritime operations and navigational aids of the era. The island geography is defined by narrow tidal openings such as Old Camp Pass and Wine Island Pass, which facilitate the flow between the gulf and the interior Bay Blanc and Terrebonne Bay. For those studying the evolution of the Louisiana shoreline, the map provides precise locations for ephemeral features like Trinity Bayou and Bay Pelton before decades of coastal erosion further altered these landforms.


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Map Details

Date Portrayed1953
Date Published1959
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.9 x 26.7 inches

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Source Details

CopyrightPublic Domain