Although some tributaries of the rivers flow in different directions, they finally pour into the mainstream in northwest - southeast direction.

* The main rivers

The Red River

Rising from China, the Red River has a total length of 1,183 km. Its part in Vietnam is 493 km long. The widest part is 1300 m; the narrowest part is 400 m. About 58 km of the Red River across Hung Yen has formed a natural border of the province to the west.

The Red River’s tributary running to the north of Hung Yen is called the Thien Mac River, and the one to Kim Dong and Hung Yen city is called Dang Giang. It has been called Hong Ha or the Red River since the country was invaded by French colonialism.

It flows down to the lowland to deposit silt. However, because of its characters, it causes erosion phenomenon in two banks, leading to flood.

The Luoc River

The Luoc River is also called Pho Da or Da Lo River. It is originally distributary of the Red River in Hung Nhan district (Thai Binh province) and flows into the Thai Binh River at Quy Cao (Tu Ky district, Hai Duong province). Its average width is 300-400 m, and its depth is 4-6 m. The total length is 70 km, 26 km of which runs over Hung Yen and forms the province’s border line to the south.

* The inland rivers

The inland rivers of Hung Yen province all belong to the Bac Hung Hai irrigational system, which are also very important irrigational axes in the province's irrigational system. There are about 36 rivers evenly distributed in the province. Some inland rivers have an important role in agriculture such as the Kim Son, Cuu An, Dien Bien, Tay Ke Sat Rivers...

- The Kim Son River: it is also known as Chinh Bac River, from Xuan Quan sluice to Au Thuyen Cau Cat, the 34-km-long river is the main irrigational axis for the system and together with Dinh Dao River is the northern main drainage axis for Bac Hung Hai system.

- The Dien Bien River: It is derived from Luc Dien sluice of the Kim Son River to the Cuu An River. The river is 22 km long. It is the main water supply for the southwestern Cuu An sub-region to take water from the Kim Son River through Luc Dien sluice.

- The Tay Ke Sat River: It is a fairly wide and deep river connecting the Kim Son River with the Cuu An River. It is an important irrigational river, taking water from the Kim Son River through Tranh sluice to irrigate Binh Giang - Northern Thanh Mien area, Southeast Cuu An and a part of Southwest Cuu An area.

- The Cuu An River: It is the main river in the South of the system from Sai Thi to Cu Loc, and the current main axis of the South.
- The Hoa Binh River: It is the main irrigational axis for the southwestern area of ​​Cuu An, it connects to the Cuu An River by the rivers Ban Le - Phuong Tuong, Uncle Ho and Nghia Tru.
- The Dinh Du River: It is a river supplying water for Van Lam and Nhu Quynh pumping stations.
In addition, the system also has a network of channels for the irrigation in the area.