St. Lawrence River 2021 ESI Hydrography: Shoreline and Water Polygons and Lines

GL_St_Lawrence_River_2021 ESI HYDRO Polygons, Lines is a geospatial dataset from the National Oceanic and Atmospheric Administration. It contains vector lines and polygons representing the coastal shoreline and hydrography of the St. Lawrence River, classified by susceptibility to oiling. The data characterize the marine and coastal environment for sensitivity to oil spills.

Use Cases

• Modeling oil spill trajectory and impact based on shoreline sensitivity classifications.
• Mapping coastal hydrography and delineating land/water boundaries for GIS analysis.
• Assessing environmental risk for the St. Lawrence River based on the ESI framework.
• Supporting coastal resource management decisions based on identified human-use resources.

Strengths

• Data is part of the standardized Environmental Sensitivity Index (ESI) framework.
• Geographic scope is clearly defined as the St. Lawrence River from Lake Ontario to L'Ile-Saint-Regis Island.
• Dataset was last updated on 2026-03-13.

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 may reflect geographic bias inherent to the specific study area.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Likely created through coastal surveying and remote sensing for the ESI program.

Time Range

2021

Freshness

Last updated 2026-03-13 22:25:30.636443.

Geography

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