Hobølelva is a river rising in
Sværsvann
Sværsvann is a lake in the southeast of Oslo, Norway
Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the ar ...
in
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 ...
, until joining Lake
Vansjø
Vansjø is a lake in the municipalities of Moss, Råde, Rygge, Våler in Østfold county, Norway.
Vansjø is part of Moss watershed (''Mossevassdraget'') stretching from Østmarka. Vansjø has four inflow rivers. The lake is fed by the Hobøle ...
in
Østfold
Østfold () is a county in Eastern Norway, which from 1 January 2020 to 31 December 2023 was part of Viken. Østfold borders Akershus and southwestern Sweden (Västra Götaland County and Värmland), while Buskerud and Vestfold are on the other ...
. Hobølelva is the largest of the four tributaries of Vansjø, and flows into Vansjø at an average of .
Rivers of Oslo
Rivers of Norway
{{Norway-river-stub