Manjalar River

Manjalar originates from Palani Hills, Tamil Nadu and runs towards east and joins the Vaigai River near Koottathu. There are nine anicuts and nine tanks in this sub-basin. It receives an annual rainfall of 775 mm. The total sub-basin area is 470 km2. The total ayacut of the sub-basin is 2155.53 ha.

The Manjalar Dam spans the river near Batlagundu.