Cheyyar, Thcnpennai, Ramandala Nagu, Thurinjalaru and
Suganadhi are the important seasonal rivers flowing in Tiruvannamalai
district. Cheyyar is a tributary of Palar, which originates in Kolar.
River Cheyyar flows through Chengam Taluk (also spelt as Taluka) of
Tiruvannamalai district. It receives rain during the Northeast and
Southwest monsoon periods. Cheyyar River passes through several villages
of Chengam Taluk, and is the major source of irrigation. The Taluk has
different types of soil, such as black, red loam and sandy loam. Major
crops raised in the Taluk are paddy and groundnut.
Magaral lies on the northern banks of Cheyyar River. Across the river
lies the Kadambarkoyil temple.