GL_St_Lawrence_River_2021 ESI POLITICAL/JURISDICTIONAL Polygons, Lines

The Great Lakes St. Lawrence River System, from Lake Ontario headwaters to L'Ile-Saint-Regis Island, is covered by this geospatial dataset. It contains vector polygons and lines representing political and jurisdictional human-use resources, part of a larger Environmental Sensitivity Index (ESI) database characterizing sensitivity to oil spills. The data was created by the National Oceanic and Atmospheric Administration (NOAA) and last updated in March 2026.

Use Cases

• Mapping international boundaries for regulatory compliance based on the described political/jurisdictional features.
• Assessing environmental risk by integrating jurisdictional data with biological and shoreline sensitivity layers mentioned in the description.
• Planning coastal resource management based on the human-use resource data for Tribal lands and administrative divisions.
• Supporting oil spill contingency planning using the integrated ESI framework described.

Strengths

• Data is part of a structured Environmental Sensitivity Index (ESI) geodatabase with related attribute tables (SOC_DAT, SOURCES).
• Spatial coverage is clearly defined as the St. Lawrence River from Lake Ontario to L'Ile-Saint-Regis Island.
• Created and maintained by the authoritative National Oceanic and Atmospheric Administration (NOAA).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the defined study area.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Likely compiled from administrative and cartographic sources for the ESI framework.

Time Range

Data version is 2021, with metadata updated in 2026.

Freshness

Last updated 2026-03-13 22:33:18.901644; freshness should be verified.

Geography

Great Lakes St. Lawrence River System, from Lake Ontario headwaters to L'Ile-Saint-Regis Island (CA).