DRAINAGE BASINS
- Created by: chelsie webb
- Created on: 12-08-13 12:27
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- DRAINAGE BASINS
- Area of land drained by a river.
- The part of the hydrological cycle that happens on land goes into the drainage basin
- Drainage basins are open systems:
- There are inputs of water to drainage basins
- Water flows through then and is stored in them
- There are outputs of water from drainage basins
- WHAT GOES ON:
- INPUTS: precipitation.
- FLOWS: surface run off, channel flow, infiltration, throughflow, groundwater, percolation
- STORES: channel storage, groundwater, interception storage, surface storage
- OUTPUTS: evaporation, transpiration, river flows into the sea
- Features
- Separated by a boundary called a watershed.
- Watershed: ridges of high land- water falling either side of these ridges will go into different drainage basins.
- KEY FEATURES
- TRIBUTARY: smaller river (e.g. stream) that joins main river.
- SOURCE: where the river starts, usually in an upland area (e.g. mountains)
- CONFLUENCE: point where two rivers join
- MOUTH: river flows into the sea or a lake
- Separated by a boundary called a watershed.
- Area of land drained by a river.
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