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The drainage basin. SPECIFICATION TARGET: know the meaning of the following drainage basin terms: watershed, confluence, tributary, source and mouth. The drainage basin. All rivers receive a water supply and the area of land this comes from is known as a drainage basin .
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The drainage basin. SPECIFICATION TARGET: know the meaning of the following drainage basin terms: watershed, confluence, tributary, source and mouth.
The drainage basin • All rivers receive a water supply and the area of land this comes from is known as a drainage basin. • The boundaries of the basin are known as the watershed and will usually be marked by areas of high land.
River drainage basins • Rivers begin in upland areas and flow downhill, becoming deeper and wider until they reach the sea. • A drainage basin is part of the water cycle where water is transferred in a continuous cycle between the sea, atmosphere and the land. • As the river flows downstream its characteristics change through the three main sections of The Upper Course The Middle Course The Lower Course
River basins are an open system with inputs and outputs of water Drainage basin diagram: Any rain falling here will flow within this basin