Southwest Pass defines this coastal landscape where the Mississippi River delta meets the Gulf of Mexico. This survey documents a fragile maritime environment within Plaquemines Parish, focusing on the intricate network of tidal channels and basins that form the very edge of the continent. The presence of Burrwood Bayou and West Bay illustrates the dynamic nature of Louisiana’s shoreline, where sediment and saltwater continuously reshape the geography. To the east of the main pass, smaller distributaries like Outlet E-1 show the fine-grained detail of the delta’s current hydrological state. For those studying maritime history or coastal change, the map provides a precise record of how these essential shipping lanes and natural bayous interact at the gulf's threshold.
5 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.
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