The Rihand River is a tributary of the Son River

Son River

Son River of central India is the largest of the Ganges' southern tributaries. A British 1850s diary shows that the river was written in English as Soane.-Course:...

 and flows through the India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n states

States and territories of India

India is a federal union of states comprising twenty-eight states and seven union territories. The states and territories are further subdivided into districts and so on.-List of states and territories:...

 of Chhattisgarh

Chhattisgarh

Chhattisgarh is a state in Central India, formed when the 16 Chhattisgarhi-speaking South-Eastern districts of Madhya Pradesh gained separate statehood on 1 November 2000....

 and Uttar Pradesh

Uttar Pradesh

Uttar Pradesh abbreviation U.P. , is a state located in the northern part of India. With a population of over 200 million people, it is India's most populous state, as well as the world's most populous sub-national entity...

.

Course

The Rihand rises from Matiranga hills, in the region south west of the Mainpat plateau, which is about 1,100 meters above mean sea level. The river flows north roughly through the central part of Surguja district

Surguja District

Surguja District is a district in the northern part of the state of Chattisgarh in India. The district headquarter is Ambikapur.The district borders on the states of Uttar Pradesh and Jharkhand, and overlaps the southeastern part of the Vindhyachal-Baghelkhand region of peninsular...

 for 160 kilometres (99.4 mi). The Rihand and its tributaries form a fertile plain in the central part of the district stretching from around Ambikapur to Lakhanpur and Pratappur. Thereafter, it flows north into Sonbhadra district of Uttar Pradesh, where it joins the Son.

Tributaries

it is principal tributaries in Surguja district are the Mahan, the Morana (Morni), the Geur, the Gagar, the Gobri, the Piparkachar, the Ramdia and the Galphulla. Many seasonal and perennial rivers join the Rihand reservoir such as the Kanchan, the Mayar and the Azir.

Rihand Dam

The Rihand Dam

Rihand Dam

Rihand Dam is a concrete gravity dam located at Pipri in Sonbhadra District in Uttar Pradesh, India. It is on the border of Chhattisgarh and Uttar Pradesh. It is on the Rihand River which is the tributary of the Son River.-Specifications:...

 was constructed across the Rihand River near Pipri in Sonbhadra district of Mirzapur division

Mirzapur Division

-About Mirzapur Mandal:Mirzapur division is an administrative geographical unit of Uttar Pradesh state of India. Mirzapur is the administrative headquarters of the division...

 in 1962 for hydropower

Hydropower

Hydropower, hydraulic power, hydrokinetic power or water power is power that is derived from the force or energy of falling water, which may be harnessed for useful purposes. Since ancient times, hydropower has been used for irrigation and the operation of various mechanical devices, such as...

generation; the reservoir impounded behind the dam is called Govind Ballabh Pant Sagar.