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2020 Map of Turnbull Island

Name: 2020 Topographic Map of Turnbull Island
Creator: U.S. Geological Survey
Published: 2020
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2020

About this map

Turnbull Island is a complex fluvial landscape defined by the shifting paths of the Red River and the Mississippi River system. The area is dominated by oxbow lakes and secondary channels, including the Upper Old River and Lower Old River, which isolate the island from the surrounding parishes. This 2020 survey documents the intricate water network of Grand Bay, Moreau Lake, and Shark Bay, illustrating the persistent wetlands that characterize this border region between Pointe Coupee and West Feliciana Parishes.

Local history is preserved in small clearings along the southern banks, where LA Highway 418 skirts the water's edge. Researchers will find several cemeteries near the Carr Cut-Off, such as Oak Grove Cem, Royal Oak Cem, and Union Cem. The presence of the Turnbull Cem deep within the island interior suggests older family ties to this river-bound terrain, which remains largely dominated by wildlife areas and managed timber tracts like those along Bean Field Rd.