Base Watersheds

This dataset is produced for the Government of Alberta and is available to the general public. Please consult the Distribution Information of this metadata for the appropriate contact to acquire this dataset.

The Base Watersheds data was created by re-working and post-processing the digital elevation data from the Alberta Provincial Digital Elevation Model, the digital hydrography data from the Base Stream and Flow Representation Lines, the Base Waterbody Polygons and the Base Hydrography Point Events and the digital boundaries of the ATS Version 4.1 Alberta Provincial Boundary. The digital elevation data was hydrologically corrected using simplified versions of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons. The digital watersheds were created using the hydrologically corrected filled Alberta Provincial Digital Elevation Model data as a base and the simplified versions of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons as pour points. The routes were created from the raw and simplified versions of the Base Stream and Flow Representation Lines using the names or the longest stream as the base. Strahler Order coding was applied to the simplified version of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons as well as the digital watersheds. Hydrocoding was applied to the routes. The reaches were not created but would be generated using the simplified version of the Base Stream and Flow Representation Lines as a base and the hydrologically corrected filled Alberta Provincial Digital Elevation Model plus the Base Hydrography Point Events to determine the breaks.

The Base Watersheds consists of four data packages: Base Watersheds - Hydrologically Corrected Filled Digital Elevation Model (DEM), Base Watersheds - Simplified Hydrography, Base Watersheds - Watersheds and Base Watersheds - Routes. The four data packages are composed of:

Base Watersheds

Hydrologically Corrected Filled Digital Elevation Mode (DEM) Hydrologically Corrected Fully Filled Terrain Hydrologically Corrected Fully Filled 25 Metre Raster Hydrologically Corrected Fully Filled 100 Metre Raster Hydrologically Corrected Partially Filled Terrain Hydrologically Corrected Partially Filled 25 Metre Raster Hydrologically Corrected Partially Filled 100 Metre Raster

Simplified Hydrography Simplified Linear Network Lines Simplified Linear Network Points Simplified Hydropolygons Simplified Linear Network Cross Reference Simplified Hydropolygons Cross Reference Strahler Order Coding

Watersheds Fully Filled Watersheds Partially Filled Watersheds Strahler Order Coding

Routes Single Line Network Routes Simplified Linear Network Routes Hydrocoding

These feature datasets, feature classes and tables were generated using the Base Features Derived Watersheds and Hydrocoding Specifications documents. There are six documents in this collection:

Overview Strahler Order Coding Filled Hydrologically Corrected Terrain Watersheds Hydrocoding Reaches

Full descriptions of the individual datasets are included in the metadata for the four data packages.

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• ALBERTA
• ELEVATION
• GEOSCIENTIFICINFORMATION
• HYDROCODING
• HYDROLOGY
• INLANDWATERS
• REACHES
• ROUTES
• STRAHLER-ORDER
• WATERSHEDS

Additional Info

• Maturity Level 1 (46%)
• Maturity Level 2 (38%)
• Maturity Level 3 (11%)
• Maturity Level 4 (10%)
• Maturity Level 5 (0%)
• Maturity Level 6 (0%)

Field	Value
Last Updated	October 20, 2025, 00:43 (UTC)
Created	October 20, 2025, 00:43 (UTC)
Domain / Topic Domain or topic of the dataset being cataloged.	Energy and Natural Resources, Environment, Science, Technology and Innovation
Title Title for the Dataset.	Base Watersheds
Description A description of the dataset.	This dataset is produced for the Government of Alberta and is available to the general public. Please consult the Distribution Information of this metadata for the appropriate contact to acquire this dataset. The Base Watersheds data was created by re-working and post-processing the digital elevation data from the Alberta Provincial Digital Elevation Model, the digital hydrography data from the Base Stream and Flow Representation Lines, the Base Waterbody Polygons and the Base Hydrography Point Events and the digital boundaries of the ATS Version 4.1 Alberta Provincial Boundary. The digital elevation data was hydrologically corrected using simplified versions of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons. The digital watersheds were created using the hydrologically corrected filled Alberta Provincial Digital Elevation Model data as a base and the simplified versions of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons as pour points. The routes were created from the raw and simplified versions of the Base Stream and Flow Representation Lines using the names or the longest stream as the base. Strahler Order coding was applied to the simplified version of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons as well as the digital watersheds. Hydrocoding was applied to the routes. The reaches were not created but would be generated using the simplified version of the Base Stream and Flow Representation Lines as a base and the hydrologically corrected filled Alberta Provincial Digital Elevation Model plus the Base Hydrography Point Events to determine the breaks. The Base Watersheds consists of four data packages: Base Watersheds - Hydrologically Corrected Filled Digital Elevation Model (DEM), Base Watersheds - Simplified Hydrography, Base Watersheds - Watersheds and Base Watersheds - Routes. The four data packages are composed of: Base Watersheds Hydrologically Corrected Filled Digital Elevation Mode (DEM) Hydrologically Corrected Fully Filled Terrain Hydrologically Corrected Fully Filled 25 Metre Raster Hydrologically Corrected Fully Filled 100 Metre Raster Hydrologically Corrected Partially Filled Terrain Hydrologically Corrected Partially Filled 25 Metre Raster Hydrologically Corrected Partially Filled 100 Metre Raster Simplified Hydrography Simplified Linear Network Lines Simplified Linear Network Points Simplified Hydropolygons Simplified Linear Network Cross Reference Simplified Hydropolygons Cross Reference Strahler Order Coding Watersheds Fully Filled Watersheds Partially Filled Watersheds Strahler Order Coding Routes Single Line Network Routes Simplified Linear Network Routes Hydrocoding These feature datasets, feature classes and tables were generated using the Base Features Derived Watersheds and Hydrocoding Specifications documents. There are six documents in this collection: Overview Strahler Order Coding Filled Hydrologically Corrected Terrain Watersheds Hydrocoding Reaches Full descriptions of the individual datasets are included in the metadata for the four data packages.
Tags / Keywords Keywords/tags categorizing the dataset.	ALBERTA ELEVATION GEOSCIENTIFICINFORMATION HYDROCODING HYDROLOGY INLANDWATERS REACHES ROUTES STRAHLER-ORDER WATERSHEDS
Format (CSV, XLS, TXT, PDF, etc) File format of the dataset.
Dataset Size Dataset size in megabytes.
Metadata Identifier Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date Published date of the dataset.
Time Period Data Span (start date) Start date of the data in the dataset.
Time Period Data Span (end date) End date of time data in the dataset.
GeoSpatial Area Data Span A spatial region or named place the dataset covers.

Field	Value
Access category Type of access granted for the dataset (open, closed, service, etc).	unrestricted
License License used to access the dataset.	Open Government Licence - Alberta
Limits on use Limits on use of data.
Location Location of the dataset.	https://open.alberta.ca/opendata/gda-87c2f32f-cd0b-4250-8142-e49391512c64
Data Service Data service for accessing a dataset.
Owner Owner of the dataset.
Contact Point Who to contact regarding access?	Alberta Environment and Protected Areas, Government of Alberta
Contact Point Email The email to contact regarding access?	[email protected]
Publisher Publisher of the dataset.
Publisher Email Email of the publisher.
Author Author of the dataset.
Author Email Email of the author.
Accessed At Date the data and metadata was accessed.

Field	Value
Identifier Unique identifier for the dataset.
Language Language(s) of the dataset	English
Link to dataset description A URL to an external document describing the dataset.
Persistent Identifier Data is identified by a persistent identifier.
Globally Unique Identifier Data is identified by a persistent and globally unique identifier.
Contains data about individuals Does the data hold data about individuals?
Contains data about identifiable individuals Does the data hold identifiable data about individual?
Contains Indigenous Data Does the data hold data about Indigenous communities?
Portal Type Platform type of the source portal.

Field	Value
Version Version of the datatset	None
Source Source of the dataset.	https://geodiscover.alberta.ca/geoportal/rest/metadata/item/e4197d5f6b3043be8cbf9e7f8b49c4fe
Version notes Version notes about the dataset.
Is version of another dataset Link to dataset that it is a version of.
Other versions Link to datasets that are versions of it.
Provenance Text Provenance Text of the data.
Provenance URL Provenance URL of the data.
Temporal resolution Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions) Describes how granular (in regions) geospatial data is in the dataset.

Field	Value
Indigenous Community Permission Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission Community permission (who gave permission).
The Indigenous communities the dataset is about Indigenous communities from which data is derived.

Field	Value
Number of data rows If tabular dataset, total number of rows.
Number of data columns If tabular dataset, total number of unique columns.
Number of data cells If tabular dataset, total number of cells with data.
Number of data relations If RDF dataset, total number of triples.
Number of entities If RDF dataset, total number of entities.
Number of data properties If RDF dataset, total number of unique properties used by the triples.
Data quality Describes the quality of the data in the dataset.
Metric for data quality A metric used to measure the quality of the data, such as missing values or invalid formats.

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