Question

The Mississippi River in the U.S has about 56% of the drainage area of The Amazon River Basin in South America but the stream discharge (flow) is only 8% of the Amazon stream discharge. Why is drainage area not an important factor in determining stream discharge?

Answer 1

The drainage area is not an important factor in determining stream discharge because it is not the main force behind stream discharge.

What is a stream discharge?

This refers to the volume of water that flows through a stream or river per unit of time.

This discharge are usually calculated by using the measurements of the stream’s velocity, its depth and width

The factors that affect stream discharge includes:

• velocity of the water because the faster the water, the more the discharge
• the width & depth of the river

Read more about stream discharge

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