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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. "Perennial" streams are contrasted with "intermittent" streams which normally cease flowing for weeks or months each year, and with "ephemeral" channels that flow only for hours or days following rainfall. During unusually dry years, a normally perennial stream may cease flowing, becoming intermittent for days, weeks, or months depending on severity of the drought. The boundaries between perennial, intermittent, and ephemeral channels are indefinite, and subject to a variety of identification methods adopted by local governments, academics, and others with a need to classify stream-flow permanence.
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small river which flows throughout the year
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نهر دائم الجريان (نهر جار طوال أيام السنة)
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נחל איתן (נחל שמימיו זורמים כל השנה)
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Corriente perpetua (arroyo que fluye todo el año)
| perennial stream in English | perennial stream in French | perennial stream in Italian | perennial stream in Spanish | perennial stream in Dutch | perennial stream in Portuguese | perennial stream in German | perennial stream in Japanese | perennial stream in Hebrew | perennial stream in Arabic | perennial stream in Swedish
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