Lake Pontchartrain dominates this maritime survey, where the open waters of the basin meet a complex convergence of political boundaries. The map focuses on the watery expanse near the shores of Southeast Louisiana, illustrating the specific aquatic coordinates where four different jurisdictions meet. Researchers can trace the submerged lines of St. John the Baptist Parish, Tangipahoa Parish, St. Tammany Parish, and Jefferson Parish as they intersect across the lake. This edition provides a precise look at the modern administrative geography of the estuary, serving as a specialized record of parish limits in an area defined more by its shared water than by solid ground.
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.
1891 · Spanish Fort
USGS Topo · 1:62,500
1892 · Bonnet Carre
USGS Topo · 1:62,500
1935 · Covington
USGS Topo · 1:62,500
1935 · Ponchatoula
USGS Topo · 1:62,500
1936 · Bonnet Carre
USGS Topo · 1:62,500
1936 · Spanish Fort
USGS Topo · 1:62,500
1938 · Spanish Fort
USGS Topo · 1:31,680
1938 · La Branche
USGS Topo · 1:31,680
1938 · Indian Beach
USGS Topo · 1:31,680
1939 · Ponchatoula
USGS Topo · 1:62,500