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Hydrological Atlas of Canada, 1978
The Hydrological Atlas is a collection of 34 sheets published in 1978 as part of Canada's contribution to the International Hydrological Decade (1965 to 1974). The maps describe Canada's atmospheric, surface and underground water resources, including the factors that control water movement within the hydrological cycle. Each map is accompanied by a supporting text that provides information on the data sources, methodology and how the data should be interpreted. Map scales are 1:10 000 000 and 1:20 000 000.
At the time of publication, this Atlas served as a source of information for those involved in large-scale water planning and management, as well as a general educational and bibliographic reference for water resources in Canada.
List of Topics:
- Introductory Pages
- Water Quantity Influenced by Precipitation
- Water Quantity Influenced by Temperature and Winds
- Water Quantity
- Water Quality
- Hydrogeology
- Other Influences
Water Quantity Influenced by Precipitation
- Precipitation Networks Map
- Annual Precipitation Map
- Depth, Duration, and Frequency of Point Rainfall - 10-Minute Rainfall Map
- Depth, Duration and Frequency of Point Rainfall - 60 Minute Rainfall Map
- Depth, Duration and Frequency of Point Rainfall - 24-Hour Rainfall Map
- Depth, Duration, and Frequency of Point Rainfall - Recording Rain Gauges and 24-Hour Rainfall Ratio Map
- Snow Cover Measurement Networks Map
- Annual Snowfall Map
- Dates of Formation and Loss of Snow Cover Map
- Mean Maximum Depth of Snow and Time of Occurrence Map
Water Quantity Influenced by Temperature and Winds
- Radiation Map
- Air Temperature Measurement Network Map
- Mean January Daily Temperature Map
- Mean July Daily Temperature Map
- Winds Map
- Mean Annual Lake Evaporation Map
- Large Lakes Map
- Freeze-up and Break-up of Rivers and Lakes Map
Water Quantity
- River Systems of Canada Map
- Streamflow Gauging Stations Map
- Annual Large River Flow Map
- Variation of Monthly River Flows Map
- Annual Runoff Map
- Water Balance - Derived Precipitation and Evapotranspiration Map
