Historical Shoreline Data for Chalmetteto Lake to Morgan Harbor, Mississippi River, LA

A high-resolution historical shoreline dataset for the Chalmetteto Lake to Morgan Harbor area of the Mississippi River in Louisiana, automated for GIS use. The data were produced by the NOAA National Ocean Service and its predecessor agencies based on imagery interpretation and field surveys. The attribution follows the NGS-developed C-COAST scheme, influenced by the International Hydrographic Organization's S-57 standard.

Use Cases

• Coastal change analysis based on historical shoreline positions
• GIS layer creation for coastal management plans based on the high-resolution shoreline data
• Validation of modern shoreline datasets based on the historical survey and imagery interpretation methods mentioned

Strengths

• Data are automated to provide an accurate high-resolution historical shoreline suitable for GIS
• Derived from shoreline maps produced by the authoritative NOAA National Ocean Service

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Office interpretation of imagery and/or field survey by NOAA and predecessor agencies

Time Range

historical

Freshness

Last updated 2026-03-13 21:16:51.255145; freshness should be verified

Geography

Chalmetteto Lake to Morgan Harbor, Mississippi River, Louisiana, USA