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The Gash River, also known as the Mareb River in its upper course, originates in Eritrea and flows westward into Sudan, eventually disappearing into the desert. It forms part of the border between Eritrea and Ethiopia. The river is utilized for irrigation in Eritrea and Sudan. During flood seasons, it can reach the Atbara River. The Gash River has a total length of approximately 300 miles (480 km).12

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3 Britannica Sources
  1. Gash River
  2. Eritrea - Drainage
  3. Meroe

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