Lake Langavatn is about 5.1 km² in area and is 36 metres deep at the deepest point. It is at 215 meters above sea level in beautiful surroundings. River Langavatnsá flows there to the north and Beilá to the east. From the southwest corner of the lake, the well-known salmon river Langá flows to the south. Langavatn has been used for water distribution and therefore its surface height can vary somewhat. The main fishing area is to the east of the lake by islets that are in front of a search-hut by the lake. There are also good fishing spots at the outfall of Langá. Char and brown trout are caught in the lake, both small and large fish. Trout of 8 pounds have been caught in the lake.