Hathnikund Barrage
Encyclopedia
The Hathnikund Barrage is a concrete barrage
Barrage (dam)
A barrage is a type of dam which consists of a line of large gates that can be opened or closed to control the amount of water passing the dam. The gates are set between flanking piers which are responsible for supporting the water load...

 located on the Yamuna River in Yamuna Nagar district
Yamuna Nagar District
Yamuna Nagar district is one of the 21 districts of Haryana state, India. The district came into existence on 1 November 1989. It occupies an area of 1756 km²...

 of Haryana
Haryana
Haryana is a state in India. Historically, it has been a part of the Kuru region in North India. The name Haryana is found mentioned in the 12th century AD by the apabhramsha writer Vibudh Shridhar . It is bordered by Punjab and Himachal Pradesh to the north, and by Rajasthan to the west and south...

 state, 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 was constructed between October 1996 and June 1999 for the purpose of irrigation. It replaced the Tajewala Barrage 3 km (2 mi) downstream which was constructed in 1873 and is now out of service. The barrage diverts water into the Western and Eastern Yamuna Canals. The small reservoir created by the barrage also serves as a wetland for 31 species of waterbird.

Plans to replace the Tajewala Barrage had been in the works since the early 1970s but an agreement between the governments of Haryana and Himchal Pradesh (which share the water it diverts) was not made until July 1994. Although the barrage was completed in late 1999, it was not operational until March 2002 because of work delays. The barrage is 360 m (1,181 ft) long and its spillway
Spillway
A spillway is a structure used to provide the controlled release of flows from a dam or levee into a downstream area, typically being the river that was dammed. In the UK they may be known as overflow channels. Spillways release floods so that the water does not overtop and damage or even destroy...

 is composed of ten main floodgate
Floodgate
Floodgates are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams, to adjust flow rates in sluices and canals, or they may be designed to stop water flow entirely as part of a levee or...

s along with five undersluices on its right side and three on its left. The maximum discharge of the barrage is 28200 m3/s (1 in 500 year flood).
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