Perennial rivers are rivers flow throughout the year, except during extreme drought.
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Gun Gun answered this
That happen often or that lasts for a long time
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๐ฅdisha ๐ฅ ๐ฅgarg๐ฅ answered this
A perennial stream or perennial river is a stream or river (channel) that has continuous flow in parts of its stream bed all year round during years of normal rainfall.
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Simran Kaur answered this
Perennial means the river receiving water from both glaciers and rain !!