Vaigai Dam is built across the Vaigai River near Andipatti, in the Theni district. 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. Vaigai Dam was inaugurated on 21 January 1959 by then Tamil Nadu chief Minister Mr.K.Kamaraj. Vaigai Dam measures 111 ft in height and can store water up to 71 ft, with a total storage capacity of 6,143 mcft. A Small and beautiful park is maintained by the Water Resources Department on both sides of the Dam. A small bridge connects the two sides of the park in front of the dam. The park also has a children play area.