Watershed - the invisible line which separates one river basin from another, Source - the start of the river, Tributaries - a river or stream flowing into a larger river or lake, Flood Plain - the land that gets flooded when the river overflows, Confluence - the point where two rivers meet, Mouth - where the river meets the sea, Drainage Basin - the area of land drained by a major river and its tributaries,

River Basins

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