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180 records found
  • Federal

    Current Water Levels, 2008

    The map shows 3172 hydrometric stations, 1491 active and 1681 inactive, located on rivers and lakes across the country. All the stations on the map are situated in a drainage area of 200 square kilometres or more. For 1200 stations shown on the map, surface water level measurements are recorded...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JP2
    • ZIP
    • other
  • Federal

    The hydrologic cycle

    Hydrology is the science concerned with the occurrence and distribution of water on and under the earth. Meteorology is the science dealing with the atmosphere and the movement of water, both as vapour and as liquid, in the air. Both sciences are concerned with the hydrologic cycle - the...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Federal

    1Freeze-up and break-up of rivers and lakes

    The plate contains four maps showing the mean river freeze-over date, the mean lake freeze-over date, the mean river ice-free date and the mean lake ice free date. The four maps depict, in a general way, the average dates on which freshwater bodies in Canada become completely ice-covered in the...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Federal

    Annual runoff

    The map shows the annual runoff in millimetres. Annual runoff varies from year to year owing to variations in precipitation, evaporation, and natural storage. The map presents the long-term average of these annual variations. The annual runoff is smallest in southern Saskatchewan and southeastern...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Federal

    Flood Extent Polygon - Carrot River, Manitoba - 2009-04-27 00:06:28Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
  • Federal

    Flood Extent Polygon - Red River, Manitoba - 2013-05-15 12:23:00Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
  • Federal

    Flood Extent Polygon - Red River, Manitoba - 2009-04-09 12:36:00Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
  • Federal

    Flood Extent Polygon - Fraser River, British Columbia - 2012-06-26 14:25:00Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
  • Federal

    Flood Extent Polygon - Red River, Manitoba - 2009-05-08 12:40:00Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
  • Federal

    Flood Extent Polygon - Assiniboine River, Manitoba - 2011-05-13 12:52:00Z

    The flood extent products are derived from satellite imagery with a system developed and operated by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan). This emergency mapping service is activated for large flood events in Canada. Products are generated and distributed in near...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • other
    • ZIP
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