Gjersjøelva (former Hvitebjørnselva) is a river in the municipality of

Nordre Follo Nordre Follo is a municipality in Akershus county. Norway. Nordre Follo was established on 1 January 2020 by the merging of Ski, Norway, Ski and Oppegård municipalities.(Norwegian) Environment Contaminants from thousands of truckloads of slate ...

Akershus Akershus () is a county in Norway, with Oslo as its administrative centre, though Oslo is not located within Akershus. Akershus has been a region in Eastern Norway with Oslo as its main city since the Middle Ages, and is named after the Akers ...

county, Norway. It flows from Gjersjøen and mouth into

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 hovedfjor ...

near Hvervenbukta, a total fall of . The last part of the river forms the border between Akershus and

Oslo Oslo ( or ; ) 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 1,064,235 in 2022 ...

. Gjersjøelva had one of the first

saw mill A sawmill (saw mill, saw-mill) or lumber mill is a facility where logging, logs are cut into lumber. Modern sawmills use a motorized saw to cut logs lengthwise to make long pieces, and crosswise to length depending on standard or custom sizes ...

s in Norway, from the 16th century.

References

Rivers of Akershus Oppegård Rivers of Norway {{Norway-river-stub