Jostedøla (or Jostedalselva) is a river which runs through the Jostedalen valley in the municipality of Luster in Sogn og Fjordane county, Norway. The Jostedøla river begins near the Fåbergstølen mountain farm where the runoff from the great Jostedalsbreen glacier and the lakes Austdalsvatnet and Styggevatnet comes together in the Jostedalen valley. It then flows south for about 50 kilometres (31 mi), past the village of Jostedal, and finally empties into the Gaupnefjorden (a small arm off of the Sognefjorden) at the village of Gaupne. The river is the main collector of water for a 804-square-kilometre (310 sq mi) watershed area.