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54 records found
  • 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
  • Profiles of Major Rivers

    Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the profiles of 17 major rivers together with the positions of important cultural and physical features connected with them. These include hydro-electric power developments (circa 1955) and lakes and a reference...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Bedrock hydrogeology

    The map shows the location and distribution of bedrock aquifers. The quality is expressed by the total dissolved solids in parts per million and the quantity is expressed in litre per second. Bedrock deposits consist of sedimentary, metamorphic, and igneous rocks; Canada possesses all three...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Variation of monthly river flows

    The plate shows a graph of the maximum and minimum monthly mean flow and mean monthly river flow for 36 selected river gauging stations. Thirty-six gauging stations across Canada were selected to represent a cross section of river types and sizes. Most of the rivers are natural flow; however,...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Radiation

    The plate contains four maps: (1) map of the global solar radiation network and sunshine recorder network; (2) annual global solar radiation; (3) June cloudless day radiation; and (4) mean annual net radiation. Stations recorded data to the end of 1970. Solar and net radiation are measured from a...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Precipitation networks

    The Atmospheric Environment Service has no network density limitations for stations reporting precipitation. As general guidance it is suggested that gauge separations should be about 15 miles (24 kilometres) in rural areas; a higher density is desirable in more heavily populated areas, and in...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Depth, duration, and frequency of point rainfall - ratios of 6-hour, 48-hour,...

    The plate contains four maps. The first map shows the location of recording rain gauges used in the map and their number of years of record. The three other maps show the ratio 6-hour/24-hour rainfall extremes, the ratio 48-hour/24-hour rainfall extremes and the ratio 72-hour/24-hour rainfall...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Air temperature measurement network

    The map shows the location of the air temperature measurement stations. Fragmentary meteorological reports were prepared and published by European explorers in the North American Arctic during the late 16th and 17th centuries. Many employees of the Hudson's Bay Company kept careful observations...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Depth, duration and frequency of point rainfall - 60 minute rainfall for 2-ye...

    The plate contains four maps of 60 minute rainfalls (in millimetres) for a 2 year return period, a 5 year return period, a 10 year return period and a 25 year return period. Each map has a detailed inset of the Vancouver area. These four maps were not analyzed for the mountainous parts of Canada...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
  • Depth, duration and frequency of point rainfall - 24-hour rainfall for 2-year...

    The plate contains four maps of 24 hour rainfalls (in millimetres) for a 2 year return period, a 5 year return period, a 10 year return period and a 25 year return period. Each map has a detailed inset of the Vancouver area. These four maps were not analyzed for the mountainous parts of Canada in...
    Organization:
    Natural Resources Canada
    Resource Formats:
    • JPG
    • PDF
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