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Because it is the land area that supplies water to a river system :)
This is the 'river catchment'.
Because it is the land area that supplies water to a river system :)
A water catchment area.
The land area that supplies water to a river system.
A water catchment area.
the main river and all of its tributaries are called a river system. The land drained by the river system is called a drainage basin. Drainage basins are separated by the high land in between, known as a divide or watershed.
I am afraid not, my dear boy.
Irrigation systems such as irrigation ditches, channels and canals artificially supply dry land with water.A river is a system which supplies dry land with water naturally, not artificially.
The low water land that is formed at the mouth of a river is called a delta.
river
The mouth of a river is where the river meets the sea, so is water.