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1994 Map of Three Mile Bay

Name: 1994 Topographic Map of Three Mile Bay
Creator: U.S. Geological Survey
Published: 1994
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1994

About this map

The vast salt marshes and intricate wetlands of St. Bernard Parish are meticulously detailed in this study of the coastal Louisiana landscape. Defined by the transition from the open Mississippi Sound to the protected waters of Three Mile Bay, the area is a labyrinth of tidal passages and named points. Notable landmarks such as Negro Point and Shell Point provide reference across the fragmented shoreline, while a network of bayous including Turkey Bayou, Johnson Bayou, and Picnic Bayou weave through the marshland.

This 1994 edition reflects decades of coastal evolution, combining original 1952 planetable surveys with updated 1990 aerial photography. The resulting documentation highlights shifting islands like Shell Island, Raccoon Island, and Crooked Island. The geography reveals a complex hydraulic environment where Boudreau Bay and West Karako Bay meet the internal drainage of Northwest Jack Williams Bay, illustrating the fragile nature of the Louisiana deltaic plain.