Open Government Portal

As we launch this enhanced integrated Open Government Portal search, you may notice that there has been a reduction in the number of open information records. Please note that you can still access the publications that no longer appear here by visiting: Government of Canada Publications and Library and Archives Canada. If you have any comments or questions contact us!

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84 records found
  • Water quality of surface waters

    The plate contains four maps showing the Hardness of Surface Water, Total Dissolved Solids of Surface Waters, Turbidity of Surface Waters and the Chemical Quality of Typical Surface Waters of Canada. These water quality maps were based on data collected from 1970 and 1971 at national river...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • 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
  • 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
  • Large lakes

    The map shows the location of 565 lakes and reservoirs with a total lake area larger than 100 square kilometres or 38.6 square miles. A table shows the fifteen largest lakes ranked by their area with their maximum depth. An examination of inland hydrologic subsystems must stress the roles of...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • 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
  • Yukon Territory

    Contained within the Atlas of Canada's Reference Map Series, 1961 to 2010, is a large, bilingual map shows Yukon Territory with full colour hypsometrical tints including spot elevations. It also includes international and territorial boundaries, the road transportation network, and the location...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Discover Canada's Watersheds

    Contained within the Atlas of Canada Poster Map Series, is a map depicting the 5 main watersheds in Canada. Building Canadian Water Connections initiative and the Canadian Wildlife Federation have collaborated to produce this map that promotes the importance of watersheds through education....
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Lakes, Rivers and Glaciers

    Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the lakes, rivers and glaciers as well as the major drainage areas. Provincial and territorial boundaries are shown, but otherwise there are no other names or symbols shown on the Canadian land surface.
    Organization:
    Natural Resources Canada
    Resource Formats:
    • PDF
    • JPG
  • Urban Geology of the National Capital Area, Canada - Hydrogeological

    Urban Geology of Canada's National Capital Area is a pilot project aiming at developing approaches, methodologies and standards that can be applied to other major urban centres of the country, while providing the geoscience knowledge required for sound regional planning and environmental...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • ZIP
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