Tunnsjøen

---

title: "Tunnsjøen" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["lierne-municipality", "røyrvik-municipality", "lakes-of-trøndelag"] description: "Lake in Trøndelag, Norway" topic_path: "general/lierne-municipality" source: "https://en.wikipedia.org/wiki/Tunnsjøen" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Lake in Trøndelag, Norway ::

::data[format=table title="Infobox body of water"]

Field	Value
name	no
sma
image	Tunnsjøen with trees.jpg
caption	Tunnsjøen as seen from the north-west shore. Gudfjelløya to the right.
mapframe	yes
mapframe-zoom	9
mapframe-caption	Interactive map of the lake
coordinates
location	Lierne Municipality and Røyrvik Municipality, Trøndelag
type	glacier lake
inflow	Ingelsvasselva, Mykkelvikelva, Rørvasselva and Stallvikelva
outflow	Tunnsjøelva
catchment	388.68 km2
basin_countries	Norway
length	20 km
width	10 km
area	100.18 km2
{{convert	88
max-depth	222 m
volume	8.816 km3
shore	118 km
elevation	358 m
islands	Gudfjelløya and Litlfjelløya (or Reinøya)
reference	NVE
::

|name = no sma |native_name = |native_name_lang = |other_name = |image = Tunnsjøen with trees.jpg |caption = Tunnsjøen as seen from the north-west shore. Gudfjelløya to the right. |image_bathymetry = | mapframe = yes | mapframe-zoom = 9 | mapframe-caption = Interactive map of the lake |coordinates = |location = Lierne Municipality and Røyrvik Municipality, Trøndelag |type = glacier lake |inflow = Ingelsvasselva, Mykkelvikelva, Rørvasselva and Stallvikelva |outflow = Tunnsjøelva |catchment = 388.68 km2 |basin_countries = Norway |date-built = |date-flooded = |length = 20 km |width = 10 km |area = 100.18 km2 |depth = 88 m |max-depth = 222 m |volume = 8.816 km3 |residence_time = |shore = 118 km |elevation = 358 m |frozen = |islands = Gudfjelløya and Litlfjelløya (or Reinøya) |cities = |reference = NVE}}

no or sma is a lake in Røyrvik Municipality and Lierne Municipality in Trøndelag county, Norway. The 100.18 km2 lake lies just south of the large lake Limingen, and just west of the border with Sweden. It is 358 m above sea level and has a volume of 8.816 km3. The deepest part of the lake is 222 m deep. It is the seventh largest lake in Norway.

Islands

The 6.1 km2 island sma or no lies in the lake Tunnsjøen. The island's highest point is 812 m above sea level; which is 454 m higher than the lake. The peak is named Gudfjellet (). This makes Gudfjelløya the highest island within a lake in Norway (and in Europe). It towers higher than the island of Monte Isola within Lake Iseo, in northern Italy. The island is located in the lake's central part. To the southwest of the island is the lake's second largest island: sma, also known as Litlfjelløya or no (). Its highest point is 177 m above the lake's water surface.

References

References

1. "Innsjødatabase".
2. "Informasjon om stadnamn". [[Norwegian Mapping Authority.
3. Store norske leksikon. "Tunnsjøen".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::