The correct answer is: B. Damodar
Maithon Dam is a concrete gravity dam on the Damodar River in Jharkhand, India. It is 106 meters (348 ft) high and 670 meters (2,200 ft) long. The dam was constructed between 1953 and 1962 and is operated by Damodar Valley Corporation (DVC).
The main purpose of the dam is to generate hydroelectric power. The dam has an installed capacity of 1,000 MW. It also provides irrigation water to about 1.2 million hectares (3.0 million acres) of land and flood control to the Damodar Valley.
The dam has been criticized for its environmental impact. The reservoir has submerged several villages and displaced thousands of people. The dam has also been blamed for the decline of the fish population in the Damodar River.
The other options are incorrect because:
- Option A: Subarnarekha is a river in eastern India. It flows through the states of Jharkhand, Odisha, and West Bengal. The Maithon Dam is not situated on the Subarnarekha River.
- Option C: Barakar is a river in eastern India. It flows through the states of Jharkhand and West Bengal. The Maithon Dam is not situated on the Barakar River.
- Option D: Ganga is the longest river in India. It flows through the states of Uttarakhand, Uttar Pradesh, Bihar, Jharkhand, Madhya Pradesh, Chhattisgarh, Odisha, West Bengal, and Bangladesh. The Maithon Dam is not situated on the Ganga River.