Drammenvassdraget
Drammenvassdraget is a river system in Norway . It is Innlandet and Viken and ends with the Drammenselva at Drammen in Drammensfjord . The flow rate at the mouth is approx. 300 m³ / s. With a length of 301 km, the system is the seventh longest river in Norway. The catchment area is 17,110 km².
The system consists of three major sub-flows; which flow together in the Tyrifjord and then form the Drsameelva:
- Begnavassdraget (with the rivers and lakes Begna , Vangsmjøsi , Slidrefjord , Strondafjord , Aurdalsfjord , Sperillen , Ådalselva and Storelva )
- Hallingdalsvassdraget (with the rivers and lakes Hallingdalselva , Krøderen and Snarumelva )
- Randsfjordvassdraget (with the rivers and lakes Etna , Dokka , Randsfjord , Randselva and Storelva )