
Lake Pontchartrain dominates this maritime survey, illustrating the aquatic convergence of four Louisiana parishes in the modern era. The map focuses on the open waters where Jefferson Parish, St. John the Baptist Parish, St. Tammany Parish, and Tangipahoa Parish share their jurisdictional boundaries. Produced by the U.S. Geological Survey, the sheet emphasizes administrative geography over landforms, as evidenced by the lack of contour data. This chart serves as a primary reference for the precise mid-lake intersections and boundaries that define the political landscape of southeastern Louisiana today.
6 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