North American Atlas – Basin Watersheds - Watershed polygon

Title
North American Atlas – Basin Watersheds - Watershed polygon
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 governmentstandards.

An area encompassing part or all of a surface drainage basin, a combination of drainage basins, or adistinct hydrologic feature. Watersheds are mapped in a hierarchical system, with the largest unitsencompassing the drainage areas of oceans, or of major rivers or river systems, and the subsequentlysmaller 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 at1:10,000,000. A watershed is an area encompassing part or all of a surface drainage basin, acombination of drainage basins, or a distinct hydrologic feature. Watersheds are mapped in ahierarchical system, with the largest units encompassing the entire drainage areas of major rivers orriver systems, or encompassing seaboard areas. Within these large units, subsequently smaller unitsencompass the drainage areas of smaller rivers and streams. Watersheds are classifi ed differently inCanada, Mexico and the United States; the data set includes a continental classifi cation (the NorthAmerican Watershed, or NAW level), as well as the classifi cation unique to each country. This data setwas compiled from each country’s watershed fi le and adjustments were made to the data to resolvemisalignments 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 andcontinental 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 deEstadística y Geografía, National Atlas of the United States, or the Commission for EnvironmentalCooperation 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 byCanada, Mexico, and the United States of America under the North American

Agreement on Environmental Cooperation (NAAEC). The CEC was established to address regionalenvironmental concerns, help prevent potential trade and environmental confl icts, and to promote theeffective enforcement of environmental law. The Agreement complements the environmentalprovisions of the North American Free Trade Agreement (NAFTA). Further information on the CEC isavailable from
http://www.cec.org/ (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 (mailto: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). Thefollowing 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
UIDENT Uident A unique number that is assigned to each feature in the North American Atlas data. The last two digits of the identifier are a suffix indicating the map layer.
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 apart, 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 apart, 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 apart, 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).
INTERNAL Internal An identifier for polygons that are internal drainage areas (closed basins.)
FED_REF Fed_ref A code identifying the watershed in the federal watershed scheme of one of the three countries. This code may be used to access national data about a watershed.
COUNTRY Country The country in which the watershed is found.
USA_REG Usa_reg The number of the United States of America region.
USA_SUB Usa_sub The number of the United States of America subregion.
USA_ACC Usa_acc The number of the United States of America accounting unit.
USA_REG_NA Usa_reg_na The name of the United States region. A region is a geographic areawhich contains either the drainage area of a major river or thecombined drainage area of a series of rivers.
USA_SUB_NA Usa_sub_na The name of the United States subregion. A subregion is a subdivision of a region and includes the area drained by a river system, a reach of a river and its tributaries in that reach, a closed basin, or a group of streams forming a coastal drainage area
USA_ACC_NA Usa_acc_na The name of the United States accounting unit. The accounting units nest within or are equivalent to the subregions, and are the smallest watershed units mapped at a continental scale.
CAN_MDA Can_mda An identifying code for the Canadian major drainage area.
CAN_SDA Can_sda An identifying code for the Canadian sub-drainage area, in the format XXY, where the first two digits identify the major drainage area, and the final character identifies the sub-drainage area.
CAN_MDA_EN Can_mda_en The name of the Canadian major drainage area, in English.
CAN_MDA_FR Can_mda_fr The name of the Canadian major drainage area, in French.
CAN_SDA_EN Can_sda_en The name of the Canadian sub-drainage area, in English.
CAN_SDA_FR Can_sda_fr The name of the Canadian sub-drainage area, in French.
MEX_FC_RH Mex_fc_rh The number of the Mexican watershed.
MEX_REG_RH Mex_reg_rh The name of the Mexican watershed.
EDIT_DATE Edit_date The most recent date on which edits were made to the area, in the format yyyymmdd.
EDIT Edit The type of edit performed on the area.
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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