Haukivesi is a lake in southeastern

Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of B ...

and a part of the

Saimaa Saimaa ( , ; sv, Saimen) is a lake located in the Finnish Lakeland area in southeastern Finland. At approximately , it is the largest lake in Finland, and the fourth largest natural freshwater lake in Europe. The name Saimaa likely comes from a ...

lake system. Haukivesi is the central basin of the system, collecting 80% of the water that eventually flows into

Lake Ladoga Lake Ladoga (; rus, Ла́дожское о́зеро, r=Ladozhskoye ozero, p=ˈladəʂskəjə ˈozʲɪrə or rus, Ла́дога, r=Ladoga, p=ˈladəɡə, fi, Laatokka arlier in Finnish ''Nevajärvi'' ; vep, Ladog, Ladoganjärv) is a fresh ...

through River

Vuoksi The Vuoksi (russian: Вуокса, historically: "Uzerva"; fi, Vuoksi; sv, Vuoksen) is a river running through the northernmost part of the Karelian Isthmus from Lake Saimaa in southeastern Finland to Lake Ladoga in northwestern Russia. The ri ...

. Its area is (

8th 8 (eight) is the natural number following 7 and preceding 9. In mathematics 8 is: * a composite number, its proper divisors being , , and . It is twice 4 or four times 2. * a power of two, being 2 (two cubed), and is the first number of t ...

). Like other lakes in the system, it has a convoluted shoreline with numerous islands and is divided into a number of smaller regions (''selkä'') such as Siitinselkä, Saviluoto, Tahkoselkä, Vuoriselkä, Kuokanselkä, Kuivaselkä, Heposelkä, Peonselkä, Tuunaanselkä, Hiekonselkä, Varparannanselkä, and Iso-Haukivesi. Haukivesi stretches from

Varkaus Varkaus (before year 1929 ''Warkaus'') is a Middle- Savonian industrial town and municipality of Finland. It is located in the province of Eastern Finland and is part of the Northern Savonia region, between city of Kuopio and town of Savonlinna. T ...

Savonlinna Savonlinna (, , ; sv, Nyslott, lit=New Castle) is a town and a municipality of inhabitants in the southeast of Finland, in the heart of the Saimaa lake region, which is why the city is also nicknamed the "Capital of Saimaa". Together with Mikkel ...

in a northeast–southwest direction. The northern part is shallow, at less than , but deepens toward the southeast, up to at Kuivaselkä.Haukivesi
Retrieved 2014-03-09. Most water flows from the east, through Tappuvirta, Oravikoski and Haponlahti locks. A smaller inflow is from the north, through Pirtinvirta in Varkaus. Of the lakes in the Saimaa lake system, Haukivesi receives the most nutrients. The water quality varies with location, because of the differences between the water qualities of the inflows. In Haukivesi, more nutrient-rich water flowing from the north mixes with purer waters from the east. The largest individual pollution sources are the city of

and its pulp mills, although smaller settlements and diffuse pollution from agriculture and forestry contribute. The lake was heavily polluted by the pulp mills up to the 70s, but stricter regulation forced the mills to treat their wastewaters, and thus the lake recovered. The southernmost part of Haukivesi is

Haapavesi Haapavesi is a town and a municipality of Finland. It is located in the North Ostrobothnia region. The name means "Aspen Water". The town has a population of () and covers an area of of which is water. The population density is . Neighbour mun ...

, and most of its southern shoreline is covered by the city of

. Water flows via Matarinsalmi sound into Haapavesi, from where it flows through several channels into the Pihlajavesi part of

Linnansaari National Park Linnansaari National Park ( fi, Linnansaaren kansallispuisto) is a national park in the Southern Savonia and Northern Savonia regions of Finland. It lies in the middle of the lake Haukivesi, a part of greater Saimaa. The National Park was establ ...

is located in the middle of the lake. The name ''Haukivesi'' means "

pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...

water", and indeed, the lake is known as a good place to catch pikes, in addition to

bream Bream ( ) are species of freshwater and marine fish belonging to a variety of genera including ''Abramis'' (e.g., ''A. brama'', the common bream), ''Acanthopagrus'', '' Argyrops'', ''Blicca'', '' Brama'', ''Chilotilapia'', '' Etelis'', ''Lepo ...

perch Perch is a common name for fish of the genus ''Perca'', freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Percif ...

and

zander The zander (''Sander lucioperca''), sander or pikeperch, is a species of ray-finned fish from the family Percidae, which includes the perches, ruffes and darters. It is found in freshwater and brackish habitats in western Eurasia. It is a popul ...

. However, there are restrictions on fishing because of the national park and protection of the endangered

Saimaa ringed seal The Saimaa ringed seal (''Pusa hispida saimensis'', Finnish: ''Saimaannorppa'') is a subspecies of ringed seal (''Pusa hispida''). They are among the most endangered seals in the world, having a total population of only about 400 individuals. The ...

References

External links

* Saimaa Varkaus Lakes of Rantasalmi Lakes of Heinävesi Lakes of Enonkoski Lakes of Joroinen Nature of Savonlinna {{EasternFinland-geo-stub