letwin
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what are the three main causes of variation in the discharge of rivers over a short period of time
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esme05
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Do you mean deposition? The discharge of a river is the volume of water which flows through it in a given time, usually measured in cubic meters per second. The volume of the discharge will be determined by factors such as climate, vegetation, soil type, drainage basin relief and the activities of man.

However, when a river loses velocity deposits part of its load. When velocity falls, large boulders are therefore the first to be deposited as they require the most energy to move. The finest particles are deposited last as they need little energy.
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