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181 records found
  • 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
  • Water balance - derived precipitation and evapotranspiration

    The map shows isolines for the annual precipitation and the annual evapotranspiration (in millimetres). Water is normally supplied by precipitation and lost through the processes of evapotranspiration and runoff or it may remain as surface or subsurface storage. Over long periods, generally...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • 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
  • Mean annual lake evaporation

    The map represents the mean value (in millimetres) of the annual loss of water through the evaporation process from the surfaces of open water bodies, such as ponds and shallow lakes and reservoirs based on the 10-year period 1957 to 1966. The greatest mean annual lake evaporation (more than 900...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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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