I ntroduction Rivers flowing into the Pacific Ocean Rivers flowing into the Arctic Ocean Rivers flowing into Hudson Bay Rivers flowing into the Gulf of Mexico Rivers flowing into the Atlantic Ocean Introduction Rivers, which form extensive networks across the country, are natural drainage channels for surface waters.
Base flow is the part of stream flow that enters the stream channel from groundwater.
The drainage basin areas are separated by a drainage divide or height of land. For more than 80 years Canada has had in operation, in increasing numbers, gauging stations that provide data and continuously monitor, among other things, streamflow distribution, discharge and variability. The discharge of a stream or river is derived from water level measurements and converted to streamflow discharge in cubic feet per second or cubic metres per second. Inland Waters Branch, Environment Canada. Coordinated Great Lakes Physical Data.