Loading map...

1973 Map of Bay Ronquille

Name: 1973 Topographic Map of Bay Ronquille
Creator: U.S. Geological Survey
Published: 1991
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1991

About this map

Lake Grande Ecaille and the complex salt marshes of Plaquemines Parish dominate this 1970s orthophotomap, which uses high-altitude aerial photography to document a landscape of rapid environmental change. This coastal zone, noted as a subsidence area in the survey notes, reveals the extensive infrastructure of the Louisiana energy industry. Numerous Platforms and a network of pipelines, including a prominent Elevated Pipeline near the northern shore of the lake, crisscross the wetlands.

Navigational channels and natural breaks like Quatre Bayou Pass separate the Grand Terre Islands from the mainland marshes. The transition from sheltered waters like Bay Long and Bay Ronquille to the open Gulf of Mexico is clearly marked by landforms such as Point Cheniere Ronquille. This document provides an essential baseline for researchers tracking coastal erosion and industrial expansion along the Louisiana coast.