Valkjärvi is a

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 ...

located in the Nurmijärvi municipality in

Southern Finland Southern Finland (, ) 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 On September 1, 1997 the Uusimaa Province, the Ky ...

. It is an island-free lake in the immediate vicinity of

Klaukkala Klaukkala (; , ) is the southern-most Urban areas in Finland, urban area () of the Nurmijärvi municipality in Uusimaa, Finland, located near Valkjärvi (lake), Lake Valkjärvi. It is the largest urban area in Nurmijärvi, and despite the fact th ...

's urban area. The water flows from the lake along the Luhtajoki River all the way to the Vantaa River. Valkjärvi is the most lushest lake of Nurmijärvi,Jorma Keskitalo: Kasviplanktonlajisto ja –biomassa Uudenmaan seurantajärvillä 2014 – 2015. (in Finnish) and it is part of the Nurmijärvi's lake monitoring program of the Central Uusimaa Environment Centre (''Keski-Uudenmaan ympäristökeskus'') due to its poor oxygen values near the bottom of the lake, which are observed especially in summer and winter under ice.Valkjärvi
- Keski-Uudenmaan ympäristökeskus (in Finnish)

Blue-green algae Cyanobacteria ( ) are a group of autotrophic gram-negative bacteria that can obtain biological energy via oxygenic photosynthesis. The name "cyanobacteria" () refers to their bluish green (cyan) color, which forms the basis of cyanobacteria' ...

are quite common in the lake; in July 2015, the

phytoplankton Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater Aquatic ecosystem, ecosystems. The name comes from the Greek language, Greek words (), meaning 'plant', and (), mea ...

in the lake with the highest total biomass consisted of 40% cyanobacteria and 29%

cryptomonad The cryptomonads (or cryptophytes) are a superclass of algae, most of which have plastids. They are traditionally considered a division of algae among phycologists, under the name of Cryptophyta. They are common in freshwater, and also occur ...

. Despite all this, Valkjärvi has great recreational value and there are quite a lot of both permanent and holiday settlements around the lake. There are two

beach A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from Rock (geology), rock, such as sand, gravel, shingle beach, shingle, pebbles, etc., or biological s ...

es at the southern end of Valkjärvi: Tiiranranta Beach and Lähtelä Beach.Uimarannat ja -paikat
- Nurmijärvi.fi (in Finnish)

References

External links

Valkjärvi's location
at Fonecta Nature of Nurmijärvi Lakes of Finland Vantaa River basin Klaukkala {{Finland-lake-stub

See also

References

External links