Rivers and drainage basins

Definitions of terms about rivers and drainage basin systems

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  • Created by: Sam Gee
  • Created on: 13-04-08 11:17


Source- the place in which a river begins

Mouth-where a river ends its journey, flowing into a lake or sea

tributary- a smaller river joining a larger one

confluence-the point at which 2 rivers join

water shed-the boundry between 2 drainage basins.

drainage basin-the area which is drained by a river and its tributaryes

drainage density-the total length of the streams in the basin divided by the total area of the basin.

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drainage basin system

transpiration-water vapour is released through the stomata in the leaves

interception-water is stored on leaves or branches

throughflow-water flows horizontilly through rocks into the river

percolation-water flows vertically through soil and rocks

infiltration-water seeps into the ground

groundwater flow-water horizontilly through rocks to the river

evaporation- from droplets to vapour

surface runoff-water flows horizontally over land into the river

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