Historical Watershed Boundary Maps For Alberta Forest Inventory

Approximately two-thirds of a series of scanned historical watershed maps from Alberta's Phase 3 Forest Inventory program are available. The Government of Alberta provides these maps in PDF and TIF formats, sorted by National Topographic System blocks within ZIP files. This series is not updated and contains a range of publication dates and scales, and the maps are not available as geo-referenced or GIS-ready data.

Use Cases

• Study historical watershed delineation patterns based on the scanned map series.
• Analyze changes in forest inventory mapping techniques based on the range of publication dates and scales.
• Reference historical land features for environmental impact assessments based on the watershed boundary maps.

Strengths

• Maps are provided in both black and white and color scans.
• Files are organized by the National Topographic System (NTS) 1:50,000 and 1:250,000 blocks.
• Available in multiple common formats (PDF, TIF) within downloadable ZIP files.

Limitations

• Approximately one-third of the map series is missing and not currently available.
• The maps are not available as geo-referenced rectified images or GIS-ready data.
• The series is not updated and contains a mix of publication dates and scales.

Provenance

Source

Government of Alberta

Collection Method

Scanned from printed color maps delineated as part of the Phase 3 Forest Inventory program.

Time Range

A range of historical publication dates (specific dates unknown).

Freshness

Last updated 2026-04-17 14:37:08.761962; freshness should be verified.

Geography

Watersheds within Alberta, Canada.