
The Atchafalaya Basin Floodway dominates this part of St. Martin and St. Mary Parishes, revealing a complex aquatic landscape of bayous, lakes, and low-lying islands. This modern survey illustrates the intricate drainage patterns of the basin, where major water bodies like Duck Lake and Sixmile Lake are linked by a network of smaller channels, including Little Bayou Chene and Bayou Boutte. The terrain is characterized by slightly elevated landmasses such as Tiger Island, Fisher Island, and American Island, which stand out amidst the surrounding wetlands. These landforms, along with Cypress Island and Gray Horse Isle, represent the fragmented shoreline and interior rises of the basin floor. The boundary between the two parishes is traced through these waterways, underscoring the role of the natural hydrography in defining local administrative lines in southern Louisiana.
37 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.
1935 · Morgan City
USGS Topo · 1:62,500
1941 · Belle Isle
USGS Topo · 1:62,500
1945 · New Orleans
USGS Topo · 1:250,000
1948 · Foster
USGS Topo · 1:62,500
1953 · Napoleonville
USGS Topo · 1:62,500
1954 · Morgan City
USGS Topo · 1:62,500
1954 · Belle Isle
USGS Topo · 1:62,500
1959 · Foster
USGS Topo · 1:62,500
1963 · New Orleans
USGS Topo · 1:250,000
1966 · New Orleans
USGS Topo · 1:250,000