Ba Bể Lake

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Ba Bể Lake

Location	Bắc Kạn Province
Coordinates	22°14′N 105°34′ECoordinates: 22°14′N 105°34′E
Basin countries	Vietnam
Max. length	8 km
Max. width	100 - 600 m
Surface area	6.5 km²
Average depth	15 - 17 m
Max. depth	29 m
Surface elevation	145 m

Ba Bể Lake (Vietnamese: Hồ Ba Bể; Ba means Three, Bể is from the Tay language word pé, meaning "lake") is the largest natural lake in Vietnam. It is located in Nam Mẫu commune, Bắc Kạn district, Bắc Kạn province, in the northeastern region of the country.

Having been formed approximately 200 million years ago, the lake is surrounded by limestone cliffs, which in turn are covered by primary forests. The lake comprises three zones named Pé Lầm, Pé Lù, and Pé Lèng. Three rivers, named Năng, Tả Han, and Nam Cường, are the main inflows of the lake. The Năng river enters the lake through a large waterfall called Đầu Đẳng. In the lake there are also three islands, named Án Mã, Khẩu Cúm, and Po Gia Mải (literally "Widow's Island").

Ba Bể Lake is a featured geographical science and is a biodiversity reservoir. It is a part of the Ba Be National Park.