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Original Data
St. Lawrence Basin watersheds
Provincial / Territorial

Data includes: * The Lake Superior watershed * The Lake Huron watershed * The Lake Erie watershed * The Lake …

Record Modified: Jun 13, 2025
Record Released: Mar 29, 2022
Publisher: Government of Ontario
Formats: HTML Other
Keywords: Economy and Business Environment and Natural Resources Environment and energy Government information
Similar Data
Provincial Watersheds, Historical
Provincial / Territorial

Note: This data has been replaced by the Ontario Watershed Boundaries (OWB). We are no longer updating this data. …

Record Modified: Jun 13, 2025
Record Released: Mar 29, 2022
Publisher: Government of Ontario
Formats: HTML PDF ZIP
Keywords: environment environment and energy Environment and Natural Resources watershed Government information
Aquatic ecosystems in the Great Lakes Basin
Provincial / Territorial

The dataset has been used for the Great Lakes Conservation Blueprint Project for Aquatic Biodiversity. It can be used for: …

Record Modified: Jun 13, 2025
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: HTML SHP ZIP
Keywords: Economy and Business Environment and Natural Resources Environment and energy Government information
Ontario Watershed Boundaries
Provincial / Territorial

This collection represents the authoritative watershed boundaries for Ontario. The data is based on a framework similar to the Atlas …

Record Modified: Jun 13, 2025
Record Released: Oct 26, 2022
Publisher: Government of Ontario
Formats: HTML
Keywords: Economy and Business Environment and Natural Resources water watershed OWB Government information
Territory of the Agreement on Sustainable Water Resources in the Great Lakes …
Provincial / Territorial
This theme represents the limit of the Quebec territory of the Agreement on Sustainable Water Resources of the Great Lakes …
Record Modified: May 1, 2025
Record Released: Mar 30, 2022
Publisher: Government and Municipalities of Québec
Formats: ESRI REST GEOJSON HTML PDF SHP Other
Keywords: Entente St. Lawrence River Great Lakes HackQC22 Government information
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Ontario Watershed Information Tool (OWIT)
Provincial / Territorial

The Ontario Watershed Information Tool (OWIT) is used to calculate information about Ontario’s watersheds. Watersheds are areas of land where …

Record Modified: Jun 13, 2025
Record Released: Mar 29, 2022
Publisher: Government of Ontario
Formats: HTML Other
Keywords: Environment and Natural Resources Government information