Southwest Pass serves as a critical maritime gateway where the Mississippi River distributary system meets the Gulf of Mexico. This coastal survey of the southern tip of Plaquemines Parish illustrates the dynamic delta environment, dominated by the waters of West Bay and the narrow waterway of Burrwood Bayou. The geography is defined by small channels and marshy outlets, such as Outlet E-1, which characterize the bird-foot delta's shifting landforms. Historically, this area has been essential for navigation and river pilots, and this map documents the precarious boundary between the eroding Louisiana coastline and the open sea. The absence of traditional roads or settlements emphasizes the maritime and wetland character of this outermost reach of the continent.
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This is the sole edition of this map. No revisions or reprints were ever made.
1893 · East Delta
USGS Topo · 1:62,500
1893 · West Delta
USGS Topo · 1:62,500
1935 · South Pass
USGS Topo · 1:31,680
1946 · Pass Du Bois
USGS Topo · 1:31,680
1946 · Mudpan Bayou
USGS Topo · 1:31,680
1947 · Southwest Pass
USGS Topo · 1:31,680
1949 · Burrwood
USGS Topo · 1:31,680
1952 · Southwest Pass
USGS Topo · 1:62,500
1953 · West Delta
USGS Topo · 1:62,500
1954 · Pass Du Bois
USGS Topo · 1:31,680