The Long Đại River ( vi, Sông Long Đại) is a river in Quảng Ninh District of Quảng Bình Province,

North Central Coast Bắc Trung Bộ (literally North Central Region, and often translated as North Central Coast) is one of the regions of Vietnam. It consists of six provinces: Thanh Hóa, Nghệ An, Hà Tĩnh, Quảng Bình, Quảng Trị, Thừa Thiên–Hu� ...

region of

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

. The river originates in the

Annamite Range The Annamite Range or the Annamese Mountains (french: Chaîne annamitique; lo, ພູ ຫລວງ ''Phou Luang''; vi, Dãy (núi) Trường Sơn) is a major mountain range of eastern Indochina, extending approximately through Laos, Vietnam, ...

and flows generally northeastwards. Its total length is 77 km (48 mi). The Long Đại River creates a narrow fertile plain by its banks. Then it meets the

Kiến Giang River The Kiến Giang River ( vi, Sông Kiến Giang) is a river in Lệ Thủy District, Quảng Bình Province, North Central Coast, Vietnam. The length of the river is 58 km. It is a tributary of the Nhật Lệ River. The Kiến Giang River ...

, and together they form the

Nhật Lệ River The Nhật Lệ River is a river in Đồng Hới city, Quảng Bình Province, Vietnam. The Nhật Lệ River is 152 km long, of which the Kiến Giang River is 58 km in length, and the Long Đại River is 77 km long. The river ...

. The Nhật Lệ River flows generally northeastwards before emptying into

South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phil ...

Đồng Hới Đồng Hới () is the capital city of Quảng Bình Province in the north central coast of Vietnam. The city's area is . Population as per the 2017 census was 119,222. It is served by National Highway 1A, the Đồng Hới Railway Station, an ...

. The Long Đại River used to cause flooding in the

rainy season The rainy season is the time of year when most of a region's average annual rainfall occurs. Rainy Season may also refer to: * ''Rainy Season'' (short story), a 1989 short horror story by Stephen King * "Rainy Season", a 2018 song by Monni * ''T ...

(from September to December). However, the severe flooding has been prevented thanks to the dam at its headstreams.

External links and references

Rivers in Quang Binh Province on Official Website of Quang Binh government
Rivers of Quảng Bình province Nhật Lệ River Rivers of Vietnam {{Vietnam-river-stub