Vaigai dam is built across the River, Vaigai. The Dam is in the district of Theni which is located near Andipatti. The Vaigai dam is the main source of water for drinking and irrigation to Madurai and Dindigul districts. The Agricultural Research Station of Tamil Nadu has been constructed close to the Dam. The institute conducts research on a wide variety of crops which includes rice, cotton, blackgram and cowpea.
The Vaigai Hydroelectric Power Plant is at the dam and is a source of electricity in Tamil Nadu. The dam is surrounded by lush green trees. The dam also has a perfect boating facility. One can just go and have a relaxing time in the area.