1949 Map of Grand Bayou Du Large
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1949 Map of Grand Bayou Du Large

USGS Topo · Published 1949

About this map

Grand Bayou Du Large and Bayou Grand Caillou snake through the marshy expanse of coastal Terrebonne Parish in this mid-century survey. Compiled from aerial photographs taken by the Air Corps and U.S. Army, the map documents a complex aquatic landscape of brackish bays and tidal channels before modern erosion significantly reshaped the Gulf coastline. The interior is dominated by Caillou Lake and Bay Voisin, while smaller arteries like Fish Bayou and Redfish Bayou provide a detailed view of the hydraulic patterns defining the southern Louisiana wetlands. This document captures the intricate shoreline of Caillou Bay and specific navigational points like Mile Pass and Bay Moncleuse, serving as a foundational record of the region's coastal geomorphology during the post-war era.


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Map Details

Date Portrayed1949
Date Published1949
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:31,680
Physical Dimensions16.8 x 20.7 inches

Editions of this 1949 Grand Bayou Du Large 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