Question

what is called river system​

Answer 1

A river system is a number of rivers which consists of one main river, which drains into a lake or into the ocean, with all its tributaries. The source is where the water is coming from, for example, from spring water (waterfalls), mountains etc.

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Answer 2

Question:

What is called a river system ?

Answer:

A river system is a number of rivers which consists of one main river, which drains into a lake or into the ocean, with all its tributaries. ... The water always comes from high to low, emptying into the river, which is called the mouth of the river.

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