Snarumselva is a river in Buskerud county, Norway. It flows north to south from Krøderen, a lake in Krødsherad municipality, to Geithus, a village in Modum municipality, where it joins the Drammenselva river. The total length of Snarumselva is about 50 km (31 mi) and the total altitude loss is about 100 m (330 ft).
There are two hydroelectric power plants along Snarumselva, both located on natural waterfalls. The first is Ramfoss Power Plant, located on Ramfoss approximately 4.5 km (2.8 mi) south of the head of the river at Krøderen. The second, Kaggefoss Power Plant, is located on Kaggefoss,[1] approximately two kilometres north of the terminus at Geithus. The portion of the river that runs from Kaggefoss to the terminus at Geithus is also sometimes called Kista.