Open Government Portal

  • Federal

    Climate moisture index for Canada

    Drought is a deficiency in precipitation over an extended period, usually a season or more, resulting in a water shortage that has adverse impacts on vegetation, animals and/or people. The Climate Moisture Index (CMI) was calculated as the difference between annual precipitation and potential...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • FGDB/GDB
    • TIFF
    • MXD
  • Federal

    Snow Cover

    Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of six maps. Each map shows the median depth of snow for December 31st, January 31st, February 28th, March 31st, April 30th and May 31st respectively.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    River Discharge

    Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows average annual streamflow in cubic feet per second. There is an attached supplementary map which displays the reliability of the river discharge data which the above mentioned map is based on.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Temperature - Winter

    Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for December, January and February.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Post-Glacial Rebound

    Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. One shows the maximum post-glacial marine limit in feet above present sea level and the second shows the maximum height of post-glacial rebound in feet above present sea level. Both maps show existing glaciers...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Railways

    Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps accompanied by graphics. The first map shows the extension of the railway network. Gradual extensions are denoted for the following periods: 1836 to 1852, 1853 to 1880, 1881 to 1905, 1906 to 1918, 1919 to 1935,...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Railways and Canals 1971 - Western Canada

    Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the locations of railways and canals as of 1971. The railway names and operators are shown and whether or not the railway is operated as a common carrier or a private carrier. Canals and locks are shown on the map.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Temperature - Autumn

    Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for September, October and November.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Average Precipitation

    Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. One map shows the average precipitation for April to September. The second shows the average precipitation for October to March.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Federal

    Frost

    Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of five maps. Two maps show, for fertile regions, the average date of the last frost in spring and the average date of the first frost in autumn. The three remaining maps show the median depth of snow cover at a scale...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
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