The Kodayar River makes its descent at Thiruparappu. The water fall at this place is about 13 kilometres (8.1 mi) from Pechiparai Dam. The river bed is rocky and about 300 feet (91 m) in length. The water falls from a height of nearly 50 feet (15 m) and the water flows for about seven months per year. The whole bed above the falls is one rocky mass which extends 250 metres (820 ft) upstream where the Thirparappu weir has been constructed for supplying water to the paddy fields.
On either side of the river, on the left bank of the river in between the waterfalls and the weir, there is a temple dedicated to Shiva enclosed by strong fortification. The District Administration has recently constructed a swimming pool for children over here which is very popular among the children.
A small temple dedicated to Lord Shiva is situated on the banks of the river. There are strong walls and fortifications that surround the temple. Recently, a swimming pool has been constructed nearby.