The Tam Giang–Cau Hai lagoon (

Vietnamese Vietnamese may refer to: * Something of, from, or related to Vietnam, a country in Southeast Asia ** A citizen of Vietnam. See Demographics of Vietnam. * Vietnamese people, or Kinh people, a Southeast Asian ethnic group native to Vietnam ** Overse ...

: ''Hệ đầm phá Tam Giang – Cầu Hai'') is a

coastal lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') a ...

in Thua Thien Hue province,

Central Vietnam Central Vietnam ( vi, Trung Bộ or ), also known as Middle Vietnam or The Middle, formerly known as by South Vietnam, and Annam under French Indochina, is one of the three geographical regions within Vietnam. The name Trung Bộ was used by ...

. It has an area of 22,000 hectares of water surface and stretches nearly 70 kilometres, making it the largest lagoon system in

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainlan ...

. The lagoon system comprises several smaller lagoons, namely: Tam Giang, Thanh Lam, Sam Chuon, Ha Trung, Thuy Tu and Cau Hai. It has two inlets connecting to the

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 Phi ...

: Thuan An (in the centre) and Tu Hien (in the south). The depth of the lagoon is generally 1–3 metres, with the deepest site close to Thuan An inlet up to 11 metres.

References

{{Vietnam-geo-stub Lagoons of Vietnam Geography of Thừa Thiên Huế province