Damodar River is a river flowing across Bengal and flows 368 miles to reach the south western fringes of Kolkata to join the river Hooghly. Rich in mineral resources, the valley is home to large-scale mining and industrial activity. The two minerals that are widely available in the land beneath and around this river are coal and mica. As per the history of Damodar River, it used to flow from west to east in Bengal and joined Hooghly River near Kalna. But later on, it changed its travel route.
Born near the city of Chandwa in Palamau district, on the Chota Nagpur Plateau in Jharkhand state in eastern India. Flows eastward in a long speech of 592 km through the states of Jharkhand and West Bengal to the estuary of the River Hooghly. It has many tributaries and rivers sub tributaries as Barakar, Konar, Bokaro, Hazaaron, Jamnai, Ghari, Guaia, Khadia and Bhera. In some of the local languages of Jharkhand Damuda asked Damu sacred water from.
The Damodar old used to flow through Bengal in a direct course from west to east, to join the river near Kalna Hugli. However, the course is changed and in its lower reach most of the water flow in the river Mundeswari, combining with other rivers and finally most of the water flowing in the river Damodar Rupnarayan.
The same Damodar was dammed in 1959 and form the artificial lake of Panchet Hill on the border with West Bengal. In the north-eastern dam Massanjore river Mayurakshi feeds a large artificial lake near Dumka.