Byavatnet[2] is a lake in Levanger Municipality in Trøndelag county, Norway. It is located about 2.5 kilometres (1.6 mi) south of the village of Ekne and about 3 kilometres (1.9 mi) west of the village of Ronglan. The lake Hammervatnet lies about 3.5 kilometres (2.2 mi) south of Byavatnet and the lake Sønningen lies about 1.5 kilometres (0.93 mi) to the northwest.[3] The 2.31-square-kilometre (570-acre) lake is about 5 kilometres (3.1 mi) long and about 800 metres (0.5 mi) wide.