From Wikipedia, the free encyclopedia
|Location||Akershus county, Norway|
|Surface area||2.6 km²|
|Surface elevation||40 m|
Gjersjøen is a lake in the municipalities Oppegård and Ås in Akershus county, Norway. It has a surface area of 2.6 km², and is 40 m above sea level. The lake drains through Gjersjøelva to Bunnefjorden.
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