Lake Pontchartrain dominates this maritime survey, illustrating the expansive waters within the St. Tammany Parish boundary south of Covington. This specific quadrant is almost entirely comprised of the open lake, offering a clear view of the bathymetry and shoreline transitions as they appeared in 2012. The data, compiled from National Hydrography Dataset and imagery sources, provides a specialized focus on the coastal shelf and the aquatic geography of this significant Louisiana basin. It serves as a precise reference for the state of the lake's northern reaches prior to more recent coastal changes.
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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
1939 · Ponchatoula
USGS Topo · 1:62,500
1939 · Covington
USGS Topo · 1:62,500
1950 · Covington
USGS Topo · 1:62,500
1951 · Ponchatoula
USGS Topo · 1:62,500