Title

Clip of Lake Winnipeg Watershed from Atlas of Canada

License

Creative Commons Attribution 4.0 International (CC BY 4.0)

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Abstract

The Drainage Areas dataset is largely based on the Water Survey of Canada (WSC) drainage area boundaries at the sub-sub-basin level. The data model supports the derivation, from the Fundamental Drainage Areas (FDA) dataset (sub-sub-basin level), of the WSC and the National Atlas of Canada (NA) (AC) drainage area hierarchies and the data is available in all three schemes. Drainage area definitions for both WSC and Atlas of Canada boundaries were reviewed resulting in some modifications. Larger scale reference data sources were used for further manual boundary adjustments. This dataset has been integrated with other National Scale Frameworks hydrology datasets and is considered a component of the Hydrology Theme. The Water Survey of Canada (Environment Canada) has a 3-level hierarchy of drainage areas established in 1927 for the purpose of managing hydrometric stations (recording water levels or rates of flow). This scheme covers the entire landmass of Canada. The National Atlas Drainage Basin scheme, delineated on a paper map in 1980, was based on classic drainage basins having certain minimum volume of mean annual discharge. (A classic drainage basin is a land area for which all the surface drainage with its boundary converges and exits at a single point.) The National Atlas Drainage Basin scheme effectively excludes coastal drainage areas whose discharge volume does not meet its criterion for inclusion. In 2006-2007 the Atlas of Canada added a fourth scheme to the drainage areas frameworks. Selected Fundamental Drainage Areas polygons were merged to create a full-country coverage of 595 'Canadian Watersheds' to be used in the broad public dissemination of information on watersheds and water issues. The National Scale Frameworks Hydrology data consists of area, linear and point geospatial and attribute data for Canada's hydrology at a national scale. It provides a representation of Canada's surface water features, and data completeness reflects the content of the source, the original Vector Map level 0 (VMAP0) revision 4 hydrographic layers, except where revision editing has been performed. Key value-added characteristics include river flow direction, connectivity and the tagging of geographical name keys to selected rivers, lakes and islands included in the Concise Gazetteer of Canada. The product set for the hydrology theme consists of six groupings: Drainage Network Skeleton, Waterbodies, Islands, Drainage Areas, Supplemental Drainage Features (Hydrometric Gauging Stations and Dams) and Cartographic.

Publication Date

Sept. 9, 2022, 3:25 p.m.

Type

Vector Data

Keywords

• Dams
• Drainage
• Geospatial
• Hydrology
• Hydrometric Stations
• Lakes
• Rivers
• Surface water

Category

Inland Waters

Inland water features, drainage systems and their characteristics. Examples: rivers and glaciers, salt lakes, water utilization plans, dams, currents, floods, water quality, hydrographic charts.

Regions

Canada

Responsible

NRCan

Group

CanWIN

DOI

https://doi.org/10.34992/samf-t878

Attribution

Agriculture and Agri Food Canada, 2014, "Clip of Lake Winnipeg Watershed from Atlas of Canada", Canada and Lake Winnipeg Watershed and Basemap Layers, 10.5203/HS8A-NZ42, Canadian Watershed Information Network, V1.

More info

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Maintenance Frequency

There Are No Plans To Update The Data

Restrictions

Terms of Use

By accessing this data you agree to CanWIN's Terms of Use.

Terms of Access

CanWIN datasets are licensed individually, however most are licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) Public License. Details for the licence applied can be found using the Licence URL link provided with each dataset.

By using data and information provided on this site you accept the terms and conditions of the License. Unless otherwise specified, the license grants the rights to the public to use and share the data and results derived therefrom as long as the proper acknowledgment is given to the data licensor (citation), that any alteration to the data is clearly indicated, and that a link to the original data and the license is made available.

Purpose

The Atlas of Canada 1,000,000 National Frameworks Data are a set of integrated base map layers, which form the Atlas of Canada 1,000,000 National Frameworks Data collection. These data have been compiled at a scale of 1:1,000,000 with the primary goal being to indicate correct relative positioning with other frameworks layers rather than absolute positional accuracy.

Language

English

Supplemental Information

No information provided

Spatial Representation Type

vector data is used to represent geographic data

Layer WMS GetCapabilities document