The Ramganga Dam, also known as the Kalagarh Dam, is an

embankment dam An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface ...

on the Ramganga River upstream of Kalagarh in Pauri Garhwal district,

Uttarakhand Uttarakhand (, ), also known as Uttaranchal ( ; List of renamed places in India, the official name until 2007), is a States and union territories of India, state in North India, northern India. The state is bordered by Himachal Pradesh to the n ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

. It is located within the Jim Corbett National Park.

Background

The dam is part of the Ramganga Multipurpose Project — an irrigation and

hydroelectric Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

project. It supports a 198 MW power station and provides water for the irrigation of of farmland. In addition, it provides for flood control and recreation. Construction on the dam began in 1961 and it was completed in 1974. The three generators in the power station were commissioned in December 1975, November 1976 and March 1977.

Design

The dam is a tall and long earth and rock-fill embankment dam with of fill. The dam's

spillway A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure tha ...

is controlled by five gates and has a maximum discharge of . To support the

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

's elevation, there is a tall saddle dam on the reservoir's rim to the northeast on the Chui Sot River. The reservoir created by both dams has a capacity of which is active (or "useful") capacity. The reservoir has a surface of and a

catchment area A catchment area in human geography, is the area from which a location, such as a city, service or institution, attracts a population that uses its services and economic opportunities. Catchment areas may be defined based on from where people are ...

of . The power station at the toe of the dam contains three 66 MW

Francis turbine The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The pro ...

-generators and is afforded of design

hydraulic head Hydraulic head or piezometric head is a measurement related to liquid pressure (normalized by specific weight) and the liquid elevation above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22, eq.3.2a. It is usually meas ...

. Below the dam is a system of over of canals supported by three barrages and of main feeder canal.

References

{{Power Stations of Uttarakhand Dams in Uttarakhand Hydroelectric power stations in Uttarakhand Embankment dams Pauri Garhwal district Dams completed in 1974 Energy infrastructure completed in 1977 1977 establishments in Uttar Pradesh 20th-century architecture in India

Background

Design

See also

References