Length: Approximately 209 km (130 miles) from source to mouth.
Origin: Anamalai Hills, Western Ghats, Tamil Nadu.
Course: Flows through Kerala (Palakkad, Thrissur districts) and Tamil Nadu.
Mouth: Arabian Sea, near Ponnani, Kerala
Basin area: 6,606 km² (2,550 sq mi).
Second-longest river in Kerala: After Periyar River.
Tributaries: 13 major tributaries, including Gayathripuzha and Kannadi.
Waterfalls: Athirappilly Falls, Vazhachal Falls.
Dams: 7 dams, including Parambikulam and Sholayar.
