Nautical Chart Lake Pontchartrain

Lake Pontchartrain is an estuary located in southeastern Louisiana in the United States. It covers an area of 630 square miles with an average depth of 12 to 14 feet. Some shipping channels are kept deeper through dredging. It is roughly oval in shape, about 40 miles from west to east and 24 miles from south to north.
  • Location: Louisiana
  • Lake type: Estuary, saline
  • Basin countries: United States
  • Max. length: 40 mi (64 km)
  • Max. width: 24 mi (39 km)
  • Surface area: 630 sq mi (1630 km²)
  • Average depth: 12–14 ft (3.7–4.3 m)

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Data from: en.wikipedia.org