Theni / தேனி
Theni District is a district of Tamil Nadu state in South India.Theni district is Located beside Madurai. The town of Theni is the district headquarters. The district is divided into two natural divisions: The hilly areas are constituted by parts of the Five taluk's Theni, Periyakulam, Uthamapalayam, Usilampatti and Andipatti with thick vegetation and perennial streams from the hills on the western side and Cumbum valley which lies in Uthamapalayam taluk. As of 2011, Theni district had a population of 1,245,899 with a sex-ratio of 980 females for every 1,000 males.
The Vaigai Dam is built across the Vaigai River near Andipatti, in the Theni district of Tamil Nadu, southern India. It provides water for irrigation for the Madurai district and the Dindigul district as well as drinking water to Madurai and Andipatti. Near the dam, the Government of Tamil Nadu has constructed an Agricultural Research Station for researching the growing of a variety of crops, including rice, sorghum, blackgram, cowpea and cotton.