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The Historical Watershed Boundary Maps consists of the watersheds printed colour maps within Alberta that were delineated as part of the Phase 3 Forest Inventory program. The maps have been scanned in black and white as well as colour and sorted by the National Topographic System (NTS) 1:50 000 and 1:250 000 blocks.
The map series is available as a fee free download in Adobe PDF and TIFF formats under the Open Government Licence - Alberta.
Your use of the information will be governed by the terms of the Open Government Licence – Alberta, in force as of the date you accessed the information.
The Historical Watershed Boundary Maps were originally created to assist in management of Alberta's forests. Through the use of the maps and the accompanying data, forest resource planners in the government and the private sector were able to make sound resource management decisions using drainage basins as a base.
These maps are not available as geo-referenced rectified images or GIS-ready data.
Map Coverage and How to View
View extent of the coverage of this product:
- Index Map (PDF, 1.0 MB)
For the maps captured at a scale of 1:50 000, 1.0 cm on the map represents 0.5 km on the ground. Each map covers an area of 0.50 degrees longitude by 0.25 degrees latitude. Generally these maps are printed on 66.04 x 91.44cm (16" x 36") paper size.
For the maps captured at a scale of 1:250 000, 1.0 cm on the map represents 2.5 km on the ground. Each map covers an area of 2.0 degrees longitude by 1.0 degree latitude. Generally these maps are printed on 60.96 x 66.04cm (24" x 26") paper size.
Map Series Updates and Samples
This series is not updated and contains a range of publication dates. Approximately 2/3 of the series is currently available; the rest of the Historical Watershed Boundary Maps are missing. These will be scanned and added to the collection if they become available.
View a sample Historical Watershed Boundary Map sheet:
- Sample of Historical Watershed Boundary Map (PDF, 12.3 MB)
Map Sheet Identifier
NTS Block Series Maps in PDF and TIFF
- 73 L and M
- 74 D, E, L and M
- 82 G,H,J,N and O
- 83 B,C, E-G and I-P
- 84 A, I-L, M and N