South Pass marks the northern limit of this coastal survey, where the terrestrial world gives way to the open waters of the Gulf of Mexico. Located at the distal tip of the Mississippi River Delta in Plaquemines Parish, this map documents the contemporary coastline and the shifting shoals where the river's influence meets the sea. The sparse detail on this sheet reflects the dynamic nature of the birdfoot delta, where landmasses are frequently subject to erosion and submergence. Researchers and mariners can observe the current shoreline geometry of South Pass and the surrounding marine environment, providing a specific data point for the ongoing geological and hydrological changes at one of the southernmost points of the United States.
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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 · Garden Island Pass
USGS Topo · 1:31,680
1935 · South Pass
USGS Topo · 1:31,680
1946 · Mudpan Bayou
USGS Topo · 1:31,680
1947 · Garden Island Pass
USGS Topo · 1:31,680
1947 · Southwest Pass
USGS Topo · 1:31,680
1952 · Southwest Pass
USGS Topo · 1:62,500
1953 · West Delta
USGS Topo · 1:62,500
1954 · Southwest Pass
USGS Topo · 1:31,680