Explanation: Mettur dam, also known as the Stanley Reservoir, is a significant dam located in the state of Tamil Nadu, India. It is situated on the Cauvery River, which is one of the major rivers in South India. The dam is located in the Salem district of Tamil Nadu and is a crucial source of irrigation and hydroelectric power for the region.
The construction of the Mettur dam began in 1925 and was completed in 1934. It was named after Lord Stanley, the Governor of Madras during the time of its construction. The dam is a masonry gravity dam, which means it is constructed using large blocks of stone and relies on its own weight to resist the force of the water.
The primary purpose of the Mettur dam is to provide irrigation water to the surrounding agricultural lands. The dam has a reservoir capacity of about 1,000,000 acre-feet, which is used to irrigate approximately 1.5 million acres of land. Additionally, the dam has a hydroelectric power station that generates electricity for the region.
The location of the Mettur dam in Tamil Nadu is significant for several reasons. Tamil Nadu is a state in South India that has a long history of agriculture and water management. The Cauvery River, on which the dam is built, is a vital water source for the state, and the dam plays a crucial role in managing the water resources of the region.
It is important to note that the confusion about the location of the Mettur dam might arise due to the presence of several dams in South India. For example, Kerala and Karnataka, which are neighboring states, also have significant dams such as the Idukki dam in Kerala and the Krishna Raja Sagara dam in Karnataka. However, the Mettur dam is specifically located in Tamil Nadu and is a landmark of the state's geography and water management infrastructure.
In summary, the Mettur dam is a significant dam located in Tamil Nadu, India, on the Cauvery River. It is a crucial source of irrigation and hydroelectric power for the region and is an important landmark in Tamil Nadu's geography. The correct answer to the question is (C) Tamil Nadu.