GL St. Lawrence River 2021 ESI: Navigational and Marine Infrastructure

The Great Lakes St. Lawrence River System, from Lake Ontario to L'Ile-Saint-Regis Island, is covered by this geospatial dataset. It contains vector polygons and points representing human-use resources like anchorages, boat ramps, and ports, compiled by the National Oceanic and Atmospheric Administration. The data is part of an Environmental Sensitivity Index (ESI) characterizing sensitivity to oil spills.

Use Cases

• Mapping marine infrastructure locations based on described features like anchorages and marinas.
• Modeling potential oil spill impacts on human-use resources in the St. Lawrence River.
• Planning coastal management strategies based on the inventory of navigational facilities.
• Integrating human-use data with biological and shoreline data for comprehensive environmental sensitivity analysis.

Strengths

• Data is part of a structured Environmental Sensitivity Index (ESI) framework with three main components.
• Spatial data is designed to be used with related stand-alone attribute tables (SOC_DAT, SOURCES).
• Geographic scope is clearly defined from Lake Ontario to L'Ile-Saint-Regis Island.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Primary file format is PDF, which may complicate direct geospatial analysis.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Likely compiled from surveys or administrative records for the ESI.

Time Range

2021

Freshness

Last updated 2026-03-13 22:31:24.922427; freshness should be verified.

Geography

St. Lawrence River from the headwaters of Lake Ontario, northeast to the western portion of L'Ile-Saint-Regis Island (Canada).