# National Topographic Data Base (NTDB)
105G08

1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

## Identification Information

Citation:
  Citation Information:
    Originator:
      Government of Canada, Natural Resources Canada, Centre for Topographic Information
    Publication Date:
      2005-06-03
    Title:
      105G08
    Edition:
      2.4
    Geospatial Data Presentation Form:
      vector digital data
    Series Information:
      Series Name:
        National Topographic Data Base (NTDB)
      Issue Identification:
        3.1
    Publication Information:
      Publication Place:
        Sherbrooke, Quebec, Canada
      Publisher:
        Government of Canada, Natural Resources Canada, Centre for Topographic Information
    Other Citation Details:
      English
    Online Linkage:
      http://www.GeoGratis.gc.ca

Description:
  Abstract:
    The National Topographic Data Base (NTDB) comprises digital vector data sets that cover the entire Canadian landmass. Geomatics Canada has digitized and structured thousands of topographic maps, creating a complete and uniform product that can be highly useful in a broad range of industries. The NTDB includes features such as watercourses, urban areas, railways, roads, vegetation, and relief.
    The organizational unit for the NTDB is the National Topographic System (NTS), based on the North American Datum of 1983 (NAD83). Each file (data set) consists of one NTS unit at the 1:50,000 scale. The ground data is depicted through points, lines, and areas.
    The contour interval for this dataset is 20 meters.
  Purpose:
    The NTDB provides a base of properly structured vector data (segmentation, mathematical closure, connection and sharing between entities) designed and suited for geographic information system (GIS) applications. It also can be used for preparing thematic maps.
  Supplemental Information:
    As of February 2008, this product is no longer subject to discrepancies treatment process.

Time Period of Content:
  Time Period Information:
    Range of Dates/Times:
      Beginning Date:
        1967-01-01
      Ending Date:
        1989-01-01
  Currentness Reference:
    ground condition

Status:
  Progress:
    Complete
  Maintenance and Update Frequency:
    As needed

Spatial Domain:
  Bounding Coordinates:
    West Bounding Coordinate:
      -130.5
    East Bounding Coordinate:
      -130
    North Bounding Coordinate:
      61.5
    South Bounding Coordinate:
      61.25

Keywords:
  Theme:
    Theme Keyword Thesaurus:
      None
    Theme Keyword:
      ROAD NETWORK
    Theme Keyword:
      HYDROGRAPHY
    Theme Keyword:
      EARTH SCIENCE > HYDROSPHERE > SURFACE WATER > RIVERS/STREAMS
    Theme Keyword:
      RAIL NETWORK
    Theme Keyword:
      WATER SATURATED SOILS
    Theme Keyword:
      EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > COMMUNICATIONS
    Theme Keyword:
      EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
    Theme Keyword:
      VEGETATION
    Theme Keyword:
      EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > BUILDINGS
    Theme Keyword:
      EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
    Theme Keyword:
      TOPONYMY
    Theme Keyword:
      ROADS
    Theme Keyword:
      MANMADE FEATURES
    Theme Keyword:
      DESIGNATED AREA
    Theme Keyword:
      EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER
    Theme Keyword:
      EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > CONTOURS
    Theme Keyword:
      EARTH SCIENCE > HYDROSPHERE > SURFACE WATER > LAKES
    Theme Keyword:
      RELIEF AND LANDFORM
    Theme Keyword:
      POWER NETWORK
    Theme Keyword:
      EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > TRANSPORTATION
    Theme Keyword:
      HYPSOGRAPHY
    Theme Keyword:
      EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > PIPELINES
    Theme Keyword:
      EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > ELECTRICITY
  Place:
    Place Keyword Thesaurus:
      CEONET
    Place Keyword:
      Continent > North America > Canada > Yukon Territory
    Place Keyword:
      WOLVERINE LAKE
    Place Keyword:
      105G08

Access Constraints:
  None

Use Constraints:
  Data are subject to the GeoGratis Licence Agreement for Unrestricted Use of Digital Data.

Point of Contact:
  Contact Information:
    Contact Organization Primary:
      Contact Organization:
        Government of Canada, Natural Resources Canada, Centre for Topographic Information
      Contact Person:
        Customer Support Group
    Contact Address:
      Address Type:
        mailing and physical
      Address:
        2144, King Street West, Suite 010
      City:
        Sherbrooke
      State or Province:
        Quebec
      Postal Code:
        J1J 2E8
      Country:
        Canada
    Contact Voice Telephone:
      +01-819-564-4857 / 1-800-661-2638 (Canada and USA)
    Contact Facsimile Telephone:
      +01-819-564-5698
    Contact Electronic Mail Address:
      geoginfo@nrcan.gc.ca
    Hours of Service:
      8:30 to 12:00 and 13:00 to 16:30 EST

Data Set Credit:
  Government of Canada, Natural Resources Canada, Centre for Topographic Information

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## Data Quality Information

Logical Consistency Report:
  The data are free from any spatial inconsistencies such as overshoots, undershoots, and area misclosures. To obtain this result, two relations are defined: connection and sharing.

Completeness Report:
  Generally speaking, data sets covering maps that exceed the theoretical NTS limits at the 1:50,000 scale are separated and placed into their own data set. The international boundary automatically becomes the data set limit. The NTDB contains only data that lies within Canadian borders, even when the boundary coincides with the centre of a river. Data from maps with border breaks along the international boundary, those from a new territory resulting from a change in the reference surface, and a few special cases can deviate from regular NTS limits and be included in a special territory with irregular limits.

Positional Accuracy:
  Horizontal Positional Accuracy:
    Horizontal Positional Accuracy Report:
      The accuracy of geometric representation data is given by the difference between the position of the geometric representation associated with an entity and the real ground position of the corresponding topographic feature, as measured with respect to the geodetic network. The NTDB dataset horizontal positional accuracy assessment can vary from one occurrence of an entity to the next.
      The maximum horizontal accuracy value extracted from all sources in the dataset is provided when available.
    Quantitative Horizontal Positional Accuracy Assessment:
      Horizontal Positional Accuracy Value:
        30
      Horizontal Positional Accuracy Explanation:
        Circular Map Accuracy Standards (CMAS) in meters.
  Vertical Positional Accuracy:
    Vertical Positional Accuracy Report:
      The altimetric accuracy of the source material is provided when available. It is expressed as the Linear Map Accuracy Standard (LMAS), obtained according to the equation below:
      Linear Map Accuracy Standard: LMAS = 1.6449 σ z
      σ z = standard deviation of the elevation.
      The maximum accuracy values extracted from all sources in the dataset is provided when available.
    Quantitative Vertical Positional Accuracy Assessment:
      Vertical Positional Accuracy Value:
        10
      Vertical Positional Accuracy Explanation:
        Linear Map Accuracy Standard (LMAS) in meters.

Lineage:
  Source Information:
    Source Citation:
      Citation Information:
        Originator:
          Government of Canada, Natural Resources Canada, Centre for Topographic Information
        Publication Date:
          1984
        Title:
          105G08
        Edition:
          1.0
        Series Information:
          Series Name:
            Maps of the National Topographic System of Canada
          Issue Identification:
            Monochrome map
    Source Scale Denominator:
      50000
    Type of Source Media:
      paper
    Source Time Period of Content:
      Time Period Information:
        Range of Dates/Times:
          Beginning Date:
            1967
          Ending Date:
            1967
      Source Currentness Reference:
        ground condition
    Source Citation Abbreviation:
      MAP-105G08-1.0
    Source Contribution:
      Complete acquisition of entities by scanning (reprographic material).
  Source Information:
    Source Citation:
      Citation Information:
        Originator:
          Government of Canada, Natural Resources Canada, Geographical Names Board of Canada
        Publication Date:
          1995
        Title:
          YT
        Edition:
          1995
        Series Information:
          Series Name:
            Canadian Geographical Names Data Base
          Issue Identification:
            1995
    Type of Source Media:
      disc
    Source Time Period of Content:
      Time Period Information:
        Range of Dates/Times:
          Beginning Date:
            1967
          Ending Date:
            1967
      Source Currentness Reference:
        Unknown
    Source Citation Abbreviation:
      CGNDB-YT-1995
    Source Contribution:
      Acquisition of toponymy (digital data base and paper map).
  Source Information:
    Source Citation:
      Citation Information:
        Originator:
          Government of Canada, Natural Resources Canada, Centre for Topographic Information
        Publication Date:
          Unknown
        Title:
          TM-MSS
        Series Information:
          Series Name:
            Landsat 7 Orthorectified Imagery over Canada
          Issue Identification:
            Unknown
    Type of Source Media:
      disc
    Source Time Period of Content:
      Time Period Information:
        Range of Dates/Times:
          Beginning Date:
            1989
          Ending Date:
            1989
      Source Currentness Reference:
        ground condition
    Source Citation Abbreviation:
      LANDSAT-TM-MSS-57-17
    Source Contribution:
      Partial confirmation of contents (satellite image).
  Process Step:
    Process Description:
      Complete acquisition of entities by scanning. Acquisition of toponymy. Partial confirmation of contents.
    Process Date:
      1998-04-03

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## Spatial Data Organization Information

Direct Spatial Reference Method:
  Vector

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## Spatial Reference Information

Horizontal Coordinate System Definition:
  Geographic:
    Latitude Resolution:
      0.0000001
    Longitude Resolution:
      0.0000001
    Geographic Coordinate Units:
      Decimal degrees
  Geodetic Model:
    Horizontal Datum Name:
      North American Datum of 1983
    Ellipsoid Name:
      Geodetic Reference System 80
    Semi-major Axis:
      6378137
    Denominator of Flattening Ratio:
      298.257222101

Vertical Coordinate System Definition:
  Altitude System Definition:
    Altitude Datum Name:
      CVGD28 (Canadian Vertical Geodetic Datum of 1928)
    Altitude Resolution:
      1
    Altitude Distance Units:
      Meters
    Altitude Encoding Method:
      Attribute values

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## Entity and Attribute Information

Overview Description:
  Entity and Attribute Overview:
    Entities and attributes are described in details in the NTDB Data Dictionary (Edition 3.1).
  Entity and Attribute Detail Citation:
    Standards and Specifications of the National Topographic Data Base (Edition 3.1)

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## Distribution Information

Distributor:
  Contact Information:
    Contact Organization Primary:
      Contact Organization:
        Government of Canada, Natural Resources Canada, Centre for Topographic Information
      Contact Person:
        Customer Support Group
    Contact Address:
      Address Type:
        mailing and physical
      Address:
        2144, King Street West, Suite 010
      City:
        Sherbrooke
      State or Province:
        Quebec
      Postal Code:
        J1J 2E8
      Country:
        Canada
    Contact Voice Telephone:
      +01-819-564-4857 / 1-800-661-2638 (Canada and USA)
    Contact Facsimile Telephone:
      +01-819-564-5698
    Contact Electronic Mail Address:
      geoginfo@nrcan.gc.ca
    Hours of Service:
      8:30 to 12:00 and 13:00 to 16:30 EST

Distribution Liability:
  Data are subject to the GeoGratis Licence Agreement for Unrestricted Use of Digital Data.

Standard Order Process:
  Digital Form:
    Digital Transfer Information:
      Format Name:
        SHAPE
      File Decompression Technique:
        Data compressed into ZIP file
    Digital Transfer Option:
      Online Option:
        Computer Contact Information:
          Network Address:
            Network Resource Name:
              FTP site
  Fees:
    Free
  Ordering Instructions:
    http://www.ctis.nrcan.gc.ca

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## Metadata Reference Information

Metadata Date:
  2008-09-17

Metadata Contact:
  Contact Information:
    Contact Organization Primary:
      Contact Organization:
        Government of Canada, Natural Resources Canada, Centre for Topographic Information
      Contact Person:
        Customer Support Group
    Contact Address:
      Address Type:
        mailing and physical
      Address:
        2144, King Street West, Suite 010
      City:
        Sherbrooke
      State or Province:
        Quebec
      Postal Code:
        J1J 2E8
      Country:
        Canada
    Contact Voice Telephone:
      +01-819-564-4857 / 1-800-661-2638 (Canada and USA)
    Contact Facsimile Telephone:
      +01-819-564-5698
    Contact Electronic Mail Address:
      geoginfo@nrcan.gc.ca
    Hours of Service:
      8:30 to 12:00 and 13:00 to 16:30 EST

Metadata Standard Name:
  FGDC Content Standard for Digital Geospatial Metadata

Metadata Standard Version:
  FGDC-STD-001-1998

Metadata Use Constraints:
  Only the English XML metadata file is valid according to the XML (W3C) schema as defined by the Federal Geographic Data Committee (FGDC) (http://www.fgdc.gov). The French version of the XML metadata file does not respect the domain of values, which is only available in English in certain fields, and exists solely for the presentation of information.
  Users must ensure that they use the FGDC XML schema with the English version of the XML metadata to validate the metadata.