lake
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
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 fully 13% of Norway's surface area, all in the southern part of the country.
Geography
At its fullest length, the ...
River watershed, southeast of
Lillestrøm
Lillestrøm is a municipality in Viken county. It is located in the traditional district of Romerike. With a population of 85,757 inhabitants, it is the fourth most populated municipality in Viken. It was founded on 1 January 2020 as a merger b ...
. It is located within the municipalities of
Enebakk
Enebakk is a municipality in Akershus in Viken county, Norway. It is part of the Follo traditional region. The administrative centre of the municipality is the village of Kirkebygda.
The parish of ''Enebak'' was established as a municipality ...
,
Skedsmo Skedsmo was a municipality in Akershus county, Norway. It is part of the traditional region of Romerike. The administrative centre of the municipality was the town of Lillestrøm. About one third of the municipal population lived in Lillestrà ...
Rælingen
Rælingen is a village and municipality in Akershus in Viken county, Norway. It is part of the traditional region of Romerike. The administrative centre of the municipality is the village of Fjerdingby. Rælingen was separated from the munici ...
in
Akershus
Akershus () is a traditional region and current electoral district in Norway, with Oslo as its main city and traditional capital. It is named after the Akershus Fortress in Oslo. From the middle ages to 1919, Akershus was a fief and main cou ...
county and
Spydeberg
Spydeberg was a municipality in former Østfold county, Norway, until December 31. 2019. At January 1. 2020 it became a part of the new and greater municipality named " Indre Østfold Kommune" after the region, together with Askim and Trøgstad a ...
and
Trøgstad
Trøgstad is a municipality in Østfold county, Norway. The administrative centre of the municipality is the village of Skjønhaug. The municipality is divided into the parishes of Skjønhaug, Havnås and Båstad. The parish of ''Trygstad'' ...
municipalities in
Østfold
Østfold is a traditional region, a former county and a current electoral district in southeastern Norway. It borders Akershus and southwestern Sweden ( Västra Götaland County and Värmland), while Buskerud and Vestfold are on the other s ...
Norway
Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island 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)
**