Alberta Legal Subdivision Polygons with Road Allowance

March 31, 2005 is the base date for the Alberta Township System points used to derive these geospatial polygons. The dataset represents Legal Subdivisions and adjacent road allowance segments across Alberta, compiled by Alberta Data Partnerships Ltd. on behalf of the Government of Alberta. It was last updated in the platform on March 4, 2026.

Use Cases

• Map property boundaries by querying Legal Subdivision (LSD) polygon geometries.
• Analyze road network connectivity and public land access using Road Allowance Segment polygons.
• Integrate cadastral data with other layers by spatially joining on LSD polygon attributes.
• Validate land parcel extents against the provincial boundary geometry provided by Alberta Data Partnerships Ltd.

Strengths

• Derived from the authoritative Master Alberta Township System (ATS Version 4.1).
• Includes newly published data for Legal Subdivisions and road allowance segments not in the original ATS v4.1.

Limitations

• Base spatial data is from 2005, which may not reflect recent land changes.
• Specific row counts, column names, and sample data are unavailable for assessment.

Provenance

Source

Government of Alberta, compiled by Alberta Data Partnerships Ltd.

Collection Method

Derived from the Master Alberta Township System points file (ATS v4.1) and clipped to an updated provincial boundary.

Time Range

Base data dated March 31, 2005.

Freshness

Last platform update was March 4, 2026, but the underlying ATS data is dated March 31, 2005.

Geography

Province of Alberta, Canada.