Periyar ( meaning: big river) is the longest river in the state of Kerala, India, with a length of 244 km. The Periyar is known as the Lifeline of Kerala; it is one of the few perennial rivers in the region and provides drinking water for several major towns. The Idukki Dam on the Periyar generates a significant proportion of Kerala's electrical power.
Through the Periyar Lake dam and tunnel, the river serves as the major water source for five drought-prone districts in the state of Tamil Nadu, including Theni, Madurai and Ramanathapuram. The dam is maintained by the Tamil Nadu public works department under a 999-year lease arranged between the governments of Kerala and Tamil Nadu. This deal was made during the British Raj era, between... Read More