One branch of this river originate from northern slopes of Mukurthi National Park and another branch from Gudalur, in Nilagiri district of Tamil Nadu.
These two branches join together 5 km south-west of Gudalur town.
Nilambur, Vazhikkadavu, Chungathara and Edakkara are the major towns on the bank of Punnappuzha.
There are bridges built at Kattadi, Muppini and Muttikkadavu across Punnappuzha.
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