Akerselva

The Akerselva or Akerselven () is a river which flows through Oslo, Norway. It starts at Maridalsvannet in Oslomarka, and traverses the boroughs of Nordre Aker, Sagene, Grünerløkka, central Oslo and Grønland, finally ending at Paulsenkaien and Oset in Bjørvika. The river is considered to be a part of the Nordmarkvassdraget, and has the Norwegian watercourse number 006.Z. The entire river is about long, and the difference in elevation between source and mouth is approximately .

thumb|250px|right|East side of Ankerbrua over the Akker river. thumb|right|250px|West side of Ankerbrua over the Akker river.

thumb|350 px|Nybrua on Akerselva