NOAA Shoreline Mapping for the St. Lawrence River, Wellesley Island to Morristown

A high-resolution vector shoreline dataset for the St. Lawrence River between Wellesley Island and Morristown, compiled from imagery by the National Oceanic and Atmospheric Administration (NOAA). The data, last updated in March 2026, is structured using the C-COAST attribution scheme and is provided as line and point shapefiles suitable for GIS applications.

Use Cases

• GIS layer creation for coastal mapping based on the described vector shoreline data.
• Shoreline change analysis using the high-resolution, office-interpreted imagery.
• Integration with hydrographic data standards based on the C-COAST attribution scheme influenced by S-57.

Strengths

• Data is described as 'accurate high-resolution shoreline' compiled from imagery.
• Shoreline attribution follows the structured C-COAST scheme developed by NOAA's National Geodetic Survey.
• Last update recorded as March 2026, suggesting recent maintenance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data is provided in PDF and HTML formats, which may require conversion for direct geospatial use.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Office interpretation of imagery, compiled into vector data.

Time Range

null

Freshness

Last updated 2026-03-13 21:58:52.899570

Geography

St. Lawrence River, from Wellesley Island to Morristown, NY-ONT