Koyna Dam
Overview
 
The Koyna Dam is one of the largest dam
Dam
A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

s in Maharashtra
Maharashtra
Maharashtra is a state located in India. It is the second most populous after Uttar Pradesh and third largest state by area in India...

, 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...

. It is a rubble-concrete dam constructed on Koyna River
Koyna River
The Koyna River rises in Mahabaleshwar and is a tributary of the Krishna River in western Maharashtra, India. It rises near Mahableshwar, a famous hill station in the Western Ghats. Unlike most of the other rivers in Maharashtra which flow East-West direction, the Koyna river flows in North-South...

 which rises in Mahabaleshwar
Mahabaleshwar
Mahabaleshwar is a city and a municipal council in Satara district in the Indian state of Maharashtra. It is a hill station located in the Western Ghats range. With one of the few evergreen forests of the world, it served as the summer capital of Bombay province during the British Raj.-Geography...

, a hillstation in Sahyadri ranges. It is located in Koyna Nagar
Koyna Nagar
Koynanagar is a town in Maharashtra, India. It is situated on the Chiplun-Sangli state highway on the banks of Koyna River. The town is small but famous for Koyna Dam and the Koyna Hydroelectric Project which is the largest completed hydroelectric project of India...

, Satara district
Satara district
Satara District is a district of Maharashtra state in western India with an area of 10,480 km² and a population of 2,808,994 of which 14.17% were urban . Satara is the capital of the district and other major towns include Wai, Karad, Koregaon, Koyananagar, Rahimatpur, Phaltan, Mahabaleshwar...

, nestled in the Western Ghats
Western Ghats
The Western Ghats, Western Ghauts or the Sahyādri is a mountain range along the western side of India. It runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain along the Arabian Sea. The Western Ghats block rainfall to the Deccan...

 on the state highway between Chiplun
Chiplun
Chiplun is a city and a municipal council in Ratnagiri district in the state of Maharashtra, India. Located on the Mumbai–Goa highway in western India. The city is about 320 km south of Mumbai in the Konkan region of Maharashtra. It is a fast developing city in Konkan with a strong cultural...

 and Karad
Karad
Karad is a town and a municipal council in Satara district in the Indian state of Maharashtra. It lies at the confluence of Koyna River and the Krishna River. The two rivers originate at Mahabaleshwar which is around 100 km from Karad. They diverge at their origin and then meet again in...

.

The main purpose of dam is to provide hydroelectricity
Hydroelectricity
Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

 with some irrigation
Irrigation
Irrigation may be defined as the science of artificial application of water to the land or soil. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequate rainfall...

 in neighboring areas.Today the Koyna Hydroelectric Project
Koyna Hydroelectric Project
The Koyna Hydroelectric Project is the largest completed hydroelectric power plant of India. It is a complex project consisting of total four dams with the largest Dam built on Koyna River known as Koyna Dam hence the name Koyna Hydroelectric project. The project uses potential of water from Koyna...

 is the largest completed hydroelectric power plant in India having a total installed capacity of .
 
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