Data Product Specification (English) (English, PDF)

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Publisher-reported update

2025-09-10

The Agriculture and Agri-Food Canada’s (AAFC) Watersheds Project level series supplies a number of watershed and watershed related datasets for the Prairie Provinces. The levels are greater or smaller assemblages of hydrometric areas, or the components defining them. The Project is organized by hydrometric gauging stations which are sourced from Environment Canada, the United States, and Canadian provinces. Additional stations were generated to address structural issues, like river confluences or lake inlets. Collectively, they are referred to as the gauging stations, or simply, the stations. The drainage area that each station monitors, between itself and one or more of its upstream neighbours, is called an ‘incremental gross drainage area’. The incremental gross drainage areas are collected into larger or smaller groupings based on size or defined interest to generate the various ‘levels ’of the series. They include: Basins of varying size: Major drainage systems (3): Arctic Ocean, Hudson Bay and Gulf of Mexico; Major basins (23): associated with river or lake reaches; Project sub-basins (47): created specifically for the project; Sub-basins (51): based on specific Environment…

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