BLM OR Areas of Critical Environmental Concern Historic Polygons

Historical geospatial polygons define U.S. Bureau of Land Management Areas of Critical Environmental Concern (ACECs). These areas require special management to protect historic, cultural, scenic, and natural resources from irreparable damage. The dataset is published by the Department of the Interior and was last updated on March 11, 2026.

Use Cases

• Map historical conservation areas for land-use planning based on ACEC boundaries.
• Analyze spatial overlap between protected areas and other resources based on polygon features.
• Model potential impacts of development projects based on designated critical environmental areas.

Strengths

• Data is provided in multiple geospatial formats (KML, GeoJSON, GDB) for interoperability.
• Published by the authoritative source, the U.S. Department of the Interior.
• Last updated on March 11, 2026, suggesting recent maintenance.

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Department of the Interior, Bureau of Land Management

Freshness

Last updated 2026-03-11 09:33:22.870504

Geography

United States public lands, with platform tags suggesting focus on Oregon and Washington.