Great Lakes St. Clair/Detroit River 2019 Political Jurisdictional Boundaries

Vector polygons representing political and jurisdictional areas for the St. Clair/Detroit River System in southeastern Michigan. The data is part of the Environmental Sensitivity Index (ESI) geodatabase produced by the National Oceanic and Atmospheric Administration, characterizing the area's sensitivity to oil spills. It includes information on Army Corps of Engineers divisions, Coast Guard sectors, cities, counties, FEMA regions, and tribal lands.

Use Cases

• Mapping administrative boundaries for emergency response based on listed political/jurisdictional areas.
• Analyzing jurisdictional overlap for environmental policy based on the inclusion of federal, county, city, and tribal lands.
• Supporting coastal resource management decisions based on the dataset's role in the Environmental Sensitivity Index framework.

Strengths

• Data is part of a structured Environmental Sensitivity Index (ESI) geodatabase with related attribute tables (SOC_DAT, SOURCES).
• Covers a specific, defined study area including Lake Huron, St. Clair River, Lake St. Clair, Detroit River, and Lake Erie.
• Includes multiple jurisdictional layers such as federal, state, county, city, and tribal boundaries.

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 specific Great Lakes study area.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Likely compiled from authoritative sources for administrative boundaries as part of an ESI assessment.

Time Range

2019

Freshness

Last updated 2026-03-13 22:26:09.514557; freshness should be verified.

Geography

St. Clair/Detroit River System in southeastern Michigan, including portions of Lakes Huron and Erie.