(7.5M) Bathymetric - The Atlas of Canada Base Maps

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Published by the Government of Canada - Canadian Wildlife Service
Licensed under Access Only

Contour lines representing values of equal elevation below mean sea level.

Data and Resources

Dataset Extent

Latitude: 41.0° to 90.0°
Longitude: -141.0° to -52.0°

Additional Information


This set of base maps was originally prepared in an analogue form for the production of the National Atlas 5th edition. They were used as base maps to overlay the thematic information used in the preparation of Atlas maps. The digital versions were derived from the original base maps in order to complete the 5th edition of the National Atlas. They are the official bases used by the Atlas of Canada for the production of all their maps.

Contact Information

NameGeoGratis (pointOfContact)
OrganizationGovernment of Canada
Sub-OrganizationCanadian Wildlife Service

Access & Security

Who can view this dataset? Public
Who can download this dataset?Government

Metadata Information

Record Published 2014-12-15
Record Last Modified 2017-02-23
Resource Status onGoing

Object Description


Short Name: DBM_BTHYMT

Column Name Short Name Data Type Data Precision Comments
GEOMETRY GEOMETRY SDO_GEOMETRY 1 GEOMETRY is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a required attribute of feature classes and object classes in a geodatabase.
SE_ANNO_CAD_DATA BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.
FEATURE_AREA_SQM NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters
FEATURE_LENGTH_M NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters