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.