Alberta Legal Subdivision Polygons with Road Allowance

Polygons represent Legal Subdivisions and adjacent Road Allowance Segments across Alberta. The data is derived from the Master Alberta Township System points file published as ATS Version 4.1, dated March 31, 2005, and was compiled by Alberta Data Partnerships Ltd. on behalf of the Government of Alberta. The layer was last updated on the platform in March 2026.

Use Cases

• Identify land parcel boundaries using Legal Subdivision polygons for cadastral mapping.
• Analyze road allowance segments adjacent to Legal Subdivisions for right-of-way planning.
• Integrate LSD polygon geometry with other provincial boundary datasets using the ADP-clipped provincial boundary.
• Perform spatial joins using polygon attributes to associate land parcels with administrative or environmental data.

Strengths

• Polygons include adjacent Road Allowance Segments, a feature not in the original ATS v4.1 publication.
• Data is clipped to an updated provincial boundary created by Alberta Data Partnerships Ltd.

Limitations

• Specific row counts, column names, and sample data are unavailable for review.
• The underlying ATS point data is from 2005, which may not reflect recent land surveys.

Provenance

Source

Government of Alberta, compiled by Alberta Data Partnerships Ltd.

Collection Method

Derived from the Master Alberta Township System (ATS) points file, clipped to an ADP provincial boundary.

Time Range

Source ATS data version dated March 31, 2005.

Freshness

Platform record updated March 2026; underlying source data from March 2005.

Geography

Province of Alberta, Canada.