Long Đại River

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The Long Dai River (Vietnamese: Sông Long Đại) is a river in Quang Ninh County of Quang Binh Province, North Central Coast of Vietnam. The river originates in the Annamite Range and flows generally northeastwards. Its total length is 77 km (48 mi). The Long Dai River creates a narrow fertile plain by its banks. Then it meets the Kien Giang River, and together they form the Nhat Le River. The Nhat Le River flows generally northeastwards before emptying into South China Sea at Dong Hoi. The Long Dai River used to cause flooding in the rainy season (from September to December). However, the severe flooding has been prevented thanks to the dam at its headstreams.