|Location||Kokemäenjoki drainage basin|
|Coordinates||61°34′N 024°25′E / 61.567°N 24.417°ECoordinates: 61°34′N 024°25′E / 61.567°N 24.417°E|
|Surface area||133.04 km2 (51.37 sq mi)|
|Average depth||6.83 m (22.4 ft)|
|Max. depth||59.3 m (195 ft)|
|Water volume||0.909 km3 (737,000 acre·ft)|
|Shore length1||496.95 km (308.79 mi)|
|Surface elevation||84.2 m (276 ft)|
|Islands||Isosaari, Mäntysaari, Eräsalo, Mäkelänsaari|
|Settlements||Längelmäki, Kangasala, Kuhmalahti, Orivesi, Jämsä, Sahalahti|
|1 Shore length is not a well-defined measure.|
Längelmävesi (Finnish pronunciation: [ˈlæŋŋelmæʋesi]) is a lake in southwestern Finland. The lake is located mostly in the Pirkanmaa region at an elevation of 84.2 metres (276 ft). Längelmävesi is within the municipalities of Jämsä (formerly Längelmäki), Kangasala (formerly Sahalahti), Kuhmalahti, and Orivesi.
Längelmävesi lake is part of the Kokemäenjoki drainage basin (watershed). It is one of a chain of lakes (Längelmäveden reitti) that includes Längelmävesi, Vesijärvi, Roine, Pälkänevesi, and Mallasvesi lakes. This chain of lakes drains into the Vanajavesi in Valkeakoski.
In Finnish the former chain of lakes is called Längelmäveden reitti and the latter Hauhon reitti as it runs through the former municipality of Hauho.
In Finnish culture Längelmävesi and Roine lakes are well known — as they are mentioned in the famous poem "En sommardag i Kangasala" (Finnish: Kesäpäivä Kangasalla) by Zachris Topelius and have thus became part of Finnish national landscape imagery.
- Järviwiki Web Service. Finnish Environment Institute. Retrieved 2014-02-28. (English)
- Media related to Lake Längelmävesi at Wikimedia Commons