
Avoca Island and the complex wetlands south of Morgan City define this coastal Louisiana landscape, where the boundary between St. Mary Parish and Terrebonne Parish winds through a dense network of waterways. The Intracoastal Waterway cuts across the northern reaches, serving as a primary artery for maritime traffic. This 2024 survey illustrates the contemporary hydrological patterns of the Atchafalaya Basin, showing how ancient drainage systems like Bayou Chene and Bayou Black interface with more modern engineering.
15 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1892 · Gibson
USGS Topo · 1:62,500
1894 · Bayou De Large
USGS Topo · 1:62,500
1897 · Gibson
USGS Topo · 1:62,500
1932 · Lake Decade
USGS Topo · 1:62,500
1935 · Morgan City
USGS Topo · 1:62,500
1935 · Lake Penchant
USGS Topo · 1:31,680
1939 · Gibson
USGS Topo · 1:62,500
1940 · Bayou Du Large
USGS Topo · 1:62,500
1941 · Bayou Du Large
USGS Topo · 1:62,500
1941 · Gibson
USGS Topo · 1:62,500