lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
in the
Glomma
The Glomma or Glåma is Norway's longest and most voluminous river. With a total length of , it has a drainage basin that covers 13% of Norway's surface area, all in the southern part of the country.
Geography
At its fullest length, the river r ...
River watershed, southeast of the city of Lillestrøm. It is located within the municipalities of
Enebakk
Enebakk is a Municipalities of Norway, municipality in Akershus Counties of Norway, county, Norway. It is part of the Follo, Norway, Follo Districts of Norway, traditional region. The administrative centre of the municipality is the village of K ...
Rælingen
Rælingen is a village and Municipalities of Norway, municipality in Akershus Counties of Norway, county, Norway. It is part of the Districts of Norway, traditional region of Romerike. The administrative centre of the municipality is the village ...
in
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 ...
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 ...
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 archipelago of Svalbard also form part of the Kingdom of ...
with a surface area of . It is above sea level and deep.
The name
The name of the lake ( Norse ''Øyir'') is derived from ''øy'' f 'island; flat and fertile land along a waterside'.
Nordre Øyeren nature preserve
An area that includes parts of the northern ("nordre") end of the lake is an established nature preserve, listed as a
Ramsar site
A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention,8 ha (O)
*** Permanent 8 ha (P)
*** Seasonal Intermittent < 8 ha(Ts)
**