
The Portage area of St. Landry and St. Martin Parishes is defined by its position within the massive hydrological system of the Atchafalaya Basin Floodway. The landscape is a complex network of bayous, including the Bayou Courtableau, English Bayou, and the poetically named Bayou Fusilier of the Swamps. Human engineering is visible through the presence of the Grand Canal and the extensive Spillway Levee Road, which protects lower-lying areas from the seasonal shifts of the Atchafalaya River. This environment shows a clear divide between the agricultural and residential clusters near Portage and the vast, unpopulated wetlands of the floodway. The intricate system of waterways, such as the Bayou Courtableau Outlet Channel, illustrates the region's ongoing reliance on water management and drainage infrastructure to maintain the boundary between swamp and settlement.
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This is the sole edition of this map. No revisions or reprints were ever made.
1935 · Osca Bayou
USGS Topo · 1:62,500
1939 · Fordoche
USGS Topo · 1:62,500
1940 · Arnaudville
USGS Topo · 1:62,500
1954 · Baton Rouge
USGS Topo · 1:250,000
1955 · Osca Bayou
USGS Topo · 1:62,500
1955 · Fordoche
USGS Topo · 1:62,500
1956 · Baton Rouge
USGS Topo · 1:250,000
1959 · Osca Bayou
USGS Topo · 1:62,500
1959 · Fordoche
USGS Topo · 1:62,500
1959 · Palmetto
USGS Topo · 1:62,500