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The Rapti is a river that flows for approximately 400 miles (644 kilometers) through Nepal and northern India. It is a tributary of the Ghaghara River, which in turn flows into the Ganges River. The Rapti's hydrology is influenced by the South Asian monsoon and glacial melt from the Himalayas. The river's waters, along with those of other tributaries, contribute to the vast alluvial plain of northern Uttar Pradesh.12

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