Kallada River

Kallada River has its origin on the Kulathupuzha hills near Ponmudi in Thiruvananthapuram District. This 121 km long river traverses the state through Pathanapuram, Kunnathur, Kottarakkara and Kollam before draining into the Ashtamudi Lake at Kollam District.

The major tributaries of this river are Kulathupuzha, Chenthurnipuzha and Kalthuruthipuzha. The famous Hanging Bridge is built across this river. Palaruvi Waterfalls is another highlight in this river.