Cheyyaru River is an important seasonal river that runs through the Tiruvannamalai District of the state of Tamil Nadu in South India. It is a tributary of Palar River, a river which originates in Jawadhu Hills and flows through Thiruvannamalai district before entering into the Bay of Bengal. The river receives most of its water from the Northeast and Southwes…Cheyyaru River is an important seasonal river that runs through the Tiruvannamalai District of the state of Tamil Nadu in South India. It is a tributary of Palar River, a river which originates in Jawadhu Hills and flows through Thiruvannamalai district before entering into the Bay of Bengal. The river receives most of its water from the Northeast and Southwest monsoons and is the major source of irrigation for several villages, including the towns of Cheyyaru and Vandavasi along its bank.