Kolsvatnet
 Kolsvatnet is a lake in the municipality of Valle in Aust-Agder county Norway. It is located about 14 kilometres (8.7 mi) southwest of the village of Valle. The lake is located south of the lake Botnsvatnet east of the mountain Urddalsknuten and northeast of the lake Rosskreppfjorden. The lake has an area of 2.72 square kilometres (1.05 sq mi) and sits at an elevation of 1034 metres (3392 ft) above sea level.