The size of this good fishing lake is 2.3 km², the maximum depth is 23 m, and it is 525 m above sea level. Sænautavatn lies from north to south and the farm Rangalón, which was deserted in 1924, is at its northern end. The farm Sænautasel, has been rebuilt as a museum, and is at the southern end of the lake. Lónskvísl flows from the lake and flows into River Hofsá in Vopnafjörður. Sænautavatn has a deep canyon in the middle, 24 m where it is deepest. There are a lot of healthy fish in the lake, Arctic char are 1-6 pounds, and are considered especially tasty. The water is very shallow at the edges, and it often fishes well where the shallow area drops off into the deep areas. At low tide, fishing is often particularly successful. There is consistent fishing during the fishing season, but usually more in May and June.