What is river basin and it's catchment area?
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A drainage basin is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.
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A river basin is an area of land drained by a river and its tributaries. River basins have typical features, these include: Tributaries - smaller rivers flowing into a larger river. A Watershed - an area of highland surrounding theriver basin.
A drainage basin or catchment basin is an extent or an area of land where all surface water from rain, melting snow or ice converges to a single point at a lower elevation, usually the exit of the basin, where the waters join another body of water, such as ariver, lake, reservoir, estuary, wetland, sea, or ocean
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