Yamuna
Western Yamuna Canal

The Western Yamuna Canal (WYC) was built in 1335 CE by Firuz Shah Tughlaq. Excessive silting caused it to stop flowing c. 1750, when the British Raj undertook a three-year renovation in 1817 by Bengal Engineer Group. The Tajewala Barrage dam was built in 1832–33 to regulate the flow of water, and was replaced by the modern Hathni Kund Barrage in 1999.

The main canal is 86 kilometres (53 mi) long. When including its branches and many major and minor irrigation channels, it has a total length of 325 km (202 mi) The WYC begins at the Hathni Kund Barrage about 38 km (24 mi) from Dakpathar and south of Doon Valley. The canals irrigate vast tracts of land in the region in Ambala, Karnal, Sonipat, Rohtak, Jind, Hisar and Bhiwani districts.

The major branch canals are:
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