The Palar is a river of southern India. It rises in Kolar district of Karnataka state, and flows 295 km (183 miles) southeast through Karnataka and Tamil Nadu, emptying into the Bay of Bengal south of Chennai near Sadras. The cities of Arcot, Vellore, Kanchipuram, and Chingleput (Chengalpattu) are located on the Palar River. Its chief tributaries are the Ponnai and Cheyyar rivers. The Kolar District is situated in the state of Karnataka, India. ... Karnataka (ಕರ್ನಾಟಕ in Kannada) is one of the four southern states of India. ... Tamil Nadu (தமிழ் நாடு, Land of the Tamils) is a state at the southern tip of India. ... The Bay of Bengal is a sea that forms the northeastern part of the Indian Ocean. ... Chennai (ெசன்னை in Tamil), formerly known as Madras, is a city on the east coast of Southern India. ... Sadras is a fortress and town on Indias Coromandel Coast, located 70 km south of Chennai in Tamil Nadu state. ... Arcot is a town in Vellore District of Tamil Nadu state in southern India. ... A historical town in the state of Tamil Nadu, in southernmost India, Vellore is now the headquarters of the district of Vellore (formerly a part of North Arcot-Ambedkar district). ... Kanchipuram or Kancheepuram (also sometimes Conjeevaram) is the name of a temple town and district in Tamil Nadu, Indias southernmost state. ... Chingleput or Chengalpattu is a city in northern Tamil Nadu state of India. ...