WThe Black River, also known upstream as the Lixian River in China, is a river located in China and northwestern Vietnam.
WThe Cà Lồ River is a river of Vietnam. It flows through Vĩnh Phúc Province, Hanoi and Bắc Ninh Province for 89 kilometres and has a basin area of 880 km².
WCầu River is a river of northern Vietnam. It flows through the provinces/cities of Bắc Kạn, Thái Nguyên, Bắc Giang, Hanoi, Bắc Ninh. It begins at the Phia Bioóc Peak in Chợ Đồn District, west of mountainous province of Bắc Kạn.
WThe Đuống River, also known as the Thiên Đức River, is a river of Vietnam. It flows for 68 kilometres (42 mi) through Bắc Ninh Province and Hanoi.
WThe Hong River, also known as the Red River, the Hồng Hà and Sông Cái (lit. "Mother River") in Vietnamese, and the Yuan River in Chinese, is a river that flows from Yunnan in Southwest China through northern Vietnam to the Gulf of Tonkin. According to C. Michael Hogan, the associated Red River Fault was instrumental in forming the entire South China Sea at least as early as 37 million years before present.
WThe Day River is a river in Vietnam. It was formerly known as Sông Hát or Hát Giang. The river is a distributary of the Red River, draining into the Gulf of Tonkin.
WTô Lịch River is a small river, flowing in the territory of the Hanoi capital. Mainstream Tô Lịch river flows through the districts Cầu Giấy, Thanh Xuân, Hoàng Mai and Thanh Trì. It is also known as Đại Kim giang.