Cầu River

Cầu River (Vietnamese: Sông Cầu) is a river of northern Vietnam. It flows through the provinces/cities of Bắc Kạn, Thái Nguyên, Bắc Giang, Hanoi, Bắc Ninh.^[1][2] It begins at the Phia Bioóc Peak in Chợ Đồn District, west of mountainous province of Bắc Kạn.

Cầu River
Cầu River at Việt Yên, Bắc Giang
Physical characteristics
Source
• location	Chợ Đồn District
Mouth
• location	Thái Bình River
• coordinates	21°07′26″N 106°17′52″E
Length	288 km (179 mi)
Basin size	6,030 km2 (2,330 sq mi)
Basin features
Tributaries
• left	Cà Lồ River, Công River

The river has a length of 288 km and basin area of 6,030 km².