Lake Tuusula or Lake Tuusulanjärvi ( fi, Tuusulanjärvi, italics=no; sv, Tusby träsk, italics=no) is a

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 ...

on the border of the municipalities of

Tuusula Tuusula (; sv, Tusby ) is a municipality of Finland. It belongs to the Helsinki sub-region of the Uusimaa region. The municipality has a population of () and is by far the third largest municipality in Finland after Nurmijärvi and Kirkkonummi ...

and

Järvenpää Järvenpää (; sv, Träskända) is a town and municipality in Finland. It is located on the Helsinki–Riihimäki railway track in Uusimaa region, some north of Helsinki. Neighbouring municipalities are Tuusula, Sipoo and Mäntsälä. People ...

Southern Finland Southern Finland ( fi, Etelä-Suomen lääni, sv, Södra Finlands län) was a province of Finland from 1997 to 2009. It bordered the provinces of Western Finland and Eastern Finland. It also bordered the Gulf of Finland and Russia. History O ...

. The lake has an area of 6.0 square kilometres. Since the beginning of the twentieth century the shores of Lake Tuusula has been an artist's colony. The houses of

Jean Sibelius Jean Sibelius ( ; ; born Johan Julius Christian Sibelius; 8 December 186520 September 1957) was a Finnish composer of the late Romantic and 20th-century classical music, early-modern periods. He is widely regarded as his country's greatest com ...

Juhani Aho Juhani Aho, originally Johannes Brofeldt (11 September 1861 – 8 August 1921), was a Finnish author and journalist. He was nominated for the Nobel prize in literature twelve times. Early life Juhani Aho was born at Lapinlahti in 1861. His pa ...

Pekka Halonen Pekka Halonen (23 September 1865 – 1 December 1933) was a painter of Finnish landscapes and people in the national romantic style. His favorite subjects were the Finnish landscape and its people which he depicted in his Realist style.Aimo Reita ...

Eero Järnefelt Erik "Eero" Nikolai Järnefelt (8 November 1863 – 15 November 1937) was a Finnish painter and art professor. He is best known for his portraits and landscapes of the area around Koli National Park. He was a medal winner at the Paris ''Expositi ...

Joonas Kokkonen Joonas Kokkonen (; 13 November 1921 – 2 October 1996) was a Finnish composer. He was one of the most internationally famous Finnish composers of the 20th century after Sibelius; his opera ''The Last Temptations'' has received over 500 performance ...

and

Aleksis Kivi Aleksis Kivi (; born Alexis Stenvall; 10 October 1834 – 31 December 1872) was a Finnish author who wrote the first significant novel in the Finnish language, ''Seitsemän veljestä'' ("Seven Brothers") in 1870. He is also known for his 1864 p ...

are on the edges of the lake. The Lake Tuusulanjärvi Water Protection Association has taken action to save the lake from

eutrophication Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytopla ...

effects since the early 1970s. Apart from wintertime

water aeration Water aeration is the process of increasing or maintaining the oxygen saturation of water in both natural and artificial environments. Aeration techniques are commonly used in pond, lake, and reservoir management to address low oxygen levels or ...

and

cyprinid Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest verte ...

fish removal, some additional water is being fed into the Lake via the

Päijänne Water Tunnel The Päijänne Water Tunnel (, ) is a water tunnel located in Southern Finland. At , it is the second-longest tunnel in the world, running at a depth of in the bedrock. The purpose of the tunnel is to provide fresh water for the over one mi ...

References

External links

* {{DEFAULTSORT:Tuusula, Lake Järvenpää Landforms of Uusimaa Vantaa River basin Lakes of Tuusula