The Oslava is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in the

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

, a left

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Jihlava River The Jihlava (german: Igel) is a river in the Moravia (Czech Republic), a right tributary of the Svratka River. It originates in the Bohemian-Moravian Highlands ''(Českomoravská vrchovina)'' upland at the elevation of 665 m and flows to the Nov� ...

. It originates in the

Bohemian-Moravian Highlands The Bohemian-Moravian Highlands ( cs, Českomoravská vrchovina or ''Vysočina''; german: Böhmisch-Mährische Höhe) is a geomorphological macroregion and mountain range in the Czech Republic. Its highest peaks are the Javořice at and Devět s ...

at an elevation of 567 m and flows to Ivančice, where it enters the Jihlava River. It is 99.2 km long, and its basin area is 867 km². It flows through numerous towns and villages, including

Nové Veselí Nové Veselí is a market town in Žďár nad Sázavou District in the Vysočina Region of the Czech Republic. It has about 1,400 inhabitants. Nové Veselí lies on the Oslava River, approximately south-west of Žďár nad Sázavou, north-east o ...

Ostrov nad Oslavou Ostrov nad Oslavou is a market town in Žďár nad Sázavou District in the Vysočina Region of the Czech Republic. It has about 1,000 inhabitants. Ostrov nad Oslavou lies on the Oslava River, approximately south of Žďár nad Sázavou, east of ...

Velké Meziříčí Velké Meziříčí (; german: Groß Meseritsch) is a town in Žďár nad Sázavou District in the Vysočina Region of the Czech Republic. It has about 11,000 inhabitants. The historic town centre with the castle complex is well preserved and is pr ...

Náměšť nad Oslavou Náměšť nad Oslavou () is a town in Třebíč District in the Vysočina Region of the Czech Republic. It has about 4,700 inhabitants. The historic town centre is well preserved and is protected by law as an urban monument zone. Administrative ...

Oslavany Oslavany () is a town in Brno-Country District in the South Moravian Region of the Czech Republic. It has about 4,700 inhabitants. Administrative parts The village of Holasice is an administrative part of Oslavany. Geography Oslavany is located a ...

and Ivančice. The Mostiště Reservoir is constructed on the river. Its longest tributaries are the Balinka and Chvojnice rivers.

History

The first written mention of the river is from 1146, when it was called ''Ozlawa'' in a Latin text.

Fauna

There were recorded 16 species of aquatic molluscs in the Oslava river: 8 species of gastropods and 8 species of bivalves. There lives endangered species of bivalve ''

Unio crassus ''Unio crassus'', the thick shelled river mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. MolluscaBase eds. (2023). MolluscaBase. Unio crassus Philipsson, 1788. Accessed through: ...

'' at the lower river section.

References

Rivers of the Vysočina Region Rivers of the South Moravian Region Brno-Country District Žďár nad Sázavou District {{CzechRepublic-river-stub