Title
North American Atlas – Basin Watersheds - Watershed NAW4
License
Open Government Licence 2.0 - Canada (OGL-Canada-2.0)
+ You are free to: Copy, modify, publish, translate, adapt, distribute or otherwise use the Information in any medium, mode or format for any lawful purpose.

+ For more info see https://open.canada.ca/en/open-government-licence-canada.
Abstract

This collection is a legacy product that is no longer supported. It may not meet current government standards.

An area encompassing part or all of a surface drainage basin, a combination of drainage basins, or a distinct hydrologic feature.  Watersheds are mapped in a hierarchical system, with the largest units encompassing the drainage areas of oceans, or of major rivers or river systems, and the subsequently smaller units within them encompassing the drainage areas of smaller rivers and streams.

The North American Atlas – Basin Watersheds data set shows watersheds in North America at 1:10,000,000.  A watershed is an area encompassing part or all of a surface drainage  basin, a combination of drainage basins, or a distinct hydrologic feature.  Watersheds are mapped in a hierarchical system, with the largest units encompassing the entire drainage areas of major rivers or river systems, or encompassing seaboard areas.  Within these large units, subsequently smaller units encompass the drainage areas of smaller rivers and streams.  Watersheds are classified differently in Canada, Mexico and the United States; the data set includes a continental classification (the North American Watershed, or NAW level), as well as the classification unique to each country.  This data set was compiled from each country’s watershed file and adjustments were made to the data to resolve misalignments and mismatches across international borders. 

Publication Date
Type
Vector Data
Keywords
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
North America
Responsible
Group
Government of Canada
Attribution
Government of Canada, Natural Resources Canada, Mapping Information Branch, The Atlas of Canada
More info
-
Maintenance Frequency
There Are No Plans To Update The Data
Restrictions

Please see, https://open.canada.ca/en/open-government-licence-canada 

Edition
Record Modified: 2022-02-01
Purpose

The North American Atlas data are intended for geographic display and analysis at the national and continental level.  These data should be displayed and analyzed at scales appropriate for 1:10,000,000-scale data.  No responsibility is assumed by Natural Resources Canada, Instituto Nacional de Estadística y Geografía, National Atlas of the United States, or the Commission for Environmental Cooperation in the use of these data.

Language
English
Supplemental Information

Source: https://natural-resources.canada.ca/science-and-data/science-and-research/earth-sciences/geography/topographic-information/download-directory-documentation/17215

The Commission for Environmental Cooperation (CEC) is an international organization created by Canada, Mexico, and the United States of America under the North American

Agreement on Environmental Cooperation (NAAEC).  The CEC was established to address regional environmental concerns, help prevent potential trade and environmental conflicts, and to promote the effective enforcement of environmental law.  The Agreement complements the environmental provisions of the North American Free Trade Agreement (NAFTA).  Further information on the CEC is available from http://www.cec.org/ or from

Commission for Environmental Cooperation

393, rue St-Jacques Ouest

Bureau 200

Montréal (Québec)

H2Y 1N9 Canada

Telephone: 1 514 350 4300

Facsimile: 1 514 350 4314

Electronic mail: info@cec.org

These data are distributed in both geographic coordinates (through National Atlas of Canada, INEGI, and National Atlas of the United States), and Lambert Azimuthal Equal Area projection (CEC).  The following parameters are used for the Lambert Azimuthal Equal Area projection:

Longitude_of_Projection_Center: -100.00

Latitude_of_Projection_Center: 45.00

False_Easting (metres): 0.0

False_Northing (metres): 0.0

Semi-major_Axis: 6370997.0

Denominator_of_Flattening_Ratio: 1.0

Ellipsoid_Name: Sphere

Units: metres

Spatial Representation Type
vector data is used to represent geographic data

Layer WMS GetCapabilities document

Attribute Name Label Description
fid
NAW1_EN Naw1_en The name of the ocean area to which the watershed drains, in English.
NAW1_SP Naw1_sp The name of the ocean area to which the watershed drains, in Spanish.
NAW1_FR Naw1_fr The name of the ocean area to which the watershed drains, in French.
NAW2_EN Naw2_en The name of the major river system of which the watershed is a part, in English.
NAW2_SP Naw2_sp The name of the major river system of which the watershed is a part, in Spanish.
NAW2_FR Naw2_fr The name of the major river system of which the watershed is a part, in French.
NAW3_EN Naw3_en The name of the secondary river system of which the watershed is a part, in English. Secondary river systems are only mapped within the Mississippi River system.
NAW3_SP Naw3_sp The name of the secondary river system of which the watershed is a part, in Spanish. Secondary river systems are only mapped within the Mississippi River system.
NAW3_FR Naw3_fr The name of the secondary river system of which the watershed is a part, in French. Secondary river systems are only mapped within the Mississippi River system.
NAW4_EN Naw4_en The name of the watershed, in English.
NAW4_SP Naw4_sp The name of the watershed, in Spanish.
NAW4_FR Naw4_fr The name of the watershed, in French.
TRANS_BND Trans_bnd A code indicating whether the watershed crosses an international boundary.
MAP_COLOR Map_color A code indicating the color used for the watershed in the online image of the map of North American watersheds (http://www.cec.org/Page.asp?PageID=924&ContentID=2866).
Shape_Leng Shape_leng The length of the line. Units are unknown.
Shape_Area Shape_area The size of the shape. Units are unknown.

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