Bokaro district consists of undulating uplands on the Chota Nagpur Plateau with the Damodar River cutting a valley right across.

The highest hill, Lugu Pahar, rises to a height of 1,070 metres (3,510 ft).

The 5 kilometres (3.1 mi) long, 55 metres (180 ft) high earthfill dam with composite masonry cum concrete spillway, Tenughat Dam, across the Damodar River, is operated by the Government of Jharkhand.

[4] According to the 2011 Census of India, Kasmar had a total population of 2,867 of which 1,471 (51%) were males and 1,396 (49%) were females.

The total number of literate persons in Kasmar was 1,866 (86.43% of the population over 6 years).