1947 Map of Jacko Bay
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1947 Map of Jacko Bay

USGS Topo · Published 1947

About this map

Timbalier Bay and the surrounding marshlands of Terrebonne Parish are captured here during a period of transition for the Louisiana coast. This 1930s-era field study, compiled from Air Corps aerial photography, highlights the complex aquatic geography of the region before significant coastal erosion altered the landscape. An active Oil Field is noted near Lake Barre, signifying the early industrial footprint in these wetlands. The map traces intricate waterways like Bayou De La Valle and Fornathan Bayou as they thread through Old Lady Lake and Jacko Bay. Small landforms such as Cat I and the Pelican Islands appear as critical markers in the expansive waters, while various surveying points like Lier and Cook suggest the presence of local maritime or industrial camps.


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Map Details

Date Portrayed1947
Date Published1947
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:31,680
Physical Dimensions16.9 x 20.7 inches

Editions of this 1947 Jacko Bay Map

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


Historical Maps of Terrebonne Parish Through Time

259 maps found


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Source Details

CopyrightPublic Domain