Grønfjellåga

Grønfjellåga (lit. 'green mountain river') is a river in Rana Municipality in Nordland county, Norway. The 17-kilometre (11 mi) long river's source is the lakes Kallvatnet and Kopparvatnet. It then flows through the Grønfjelldalen valley while absorbing several smaller rivers, before it flows out as a tributary to the river Ranelva at the Dunderforsen waterfall (also called Stupforsen).

Flows through: Norway.

River data from Wikidata (CC0); lengths normalised to a common unit.