Skjærsjøen is a regulated lake in Nordmarka,

Oslo Oslo ( , , or ; sma, Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of in 2022, while the city's greater urban area had a population of ...

, Norway. It drains through the river Skjærsjøelva to Maridalsvannet, and also via pipe to the

Hammeren Hydroelectric Power Station Hammeren Hydroelectric Power Station ( no, Hammeren kraftstasjon) is a hydroelectric power station located in Oslo Oslo ( , , or ; sma, Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipali ...

. It is regulated by the dam Skjærsjødammen built in 1890.

References

Lakes of Oslo Reservoirs in Norway {{Oslo-geo-stub