Nøklevann is a lake in

Østmarka Østmarka is a forested area to the east of Oslo and part of the congregation of woodland areas known as Oslomarka. The area is situated within the municipalities Oslo, Lørenskog, Rælingen, Ski and Enebakk. Østmarka is delimited to the west by ...

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 has a surface area of 0.8 km², and is 163 meters above sea level. The lake drains through Ljanselva to

Bunnefjorden Bunnefjorden, sometimes referred to as Bunne Fjord, is a part of the Oslofjord in south eastern Norway, located east of the Nesodden peninsula.https://snl.no/Bunnefjorden "en indre arm av Oslofjorden i Viken fylke. Fjorden .. skilt fra hovedfjorde ...

. It is a former drinking water supply for Oslo.

References

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