Kallada River

The river originates in Kulathupuzha, in the Western Ghats, and flows west, reaching the Arabian Sea after traveling a distance of 120 km (75 mi).

The river flows through the towns of Kulathupuzha, Thenmala, Ottackal, Ayiranalloor, Edamon, Punalur, Nedumkayam, Kamukumchery and Pathanapuram.

It then enters the plains where it flows alongside Pattazhy, Enathu, Mannadi, Kunnathur, Iverkala Puthoor, Pavithreswaram, Munroe Island and West Kallada.

The river's estuary is situated near West Kallada, where it empties into Ashthamudi lake and thence into the Arabian Sea.

The effluents discharged from the mill into the river were found to alter the physiochemical factors leading to production of plankton in the mid-1900s.

[1] Sand mining along the banks of the river is a cause of concern, because it makes them more vulnerable to erosion and floods.