Oslava
| Oslava | |
|---|---|
| File:Oslava river near Motorpal in Velké Meziříčí, Žďár nad Sázavou District.jpg The Oslava in Velké Meziříčí | |
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| Location | |
| Country | Czech Republic |
| Regions | |
| Physical characteristics | |
| Source | |
| • location | Matějov, Křižanov Highlands |
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| • elevation | 584 m (1,916 ft) |
| Mouth | |
• location | Jihlava |
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• elevation | 205 m (673 ft) |
| Length | 101.2 km (62.9 mi) |
| Basin size | 867.0 km2 (334.8 sq mi) |
| Discharge | |
| • average | 3.47 m3/s (123 cu ft/s) near estuary |
| Basin features | |
| Progression | Jihlava→ Svratka→ Thaya→ Morava→ Danube→ Black Sea |
The Oslava is a river in the Czech Republic, a left tributary of the Jihlava River. It flows through the Vysočina and South Moravian regions. At 101.2 km (62.9 mi), it is the 24th longest river in the Czech Republic.
Etymology
[edit | edit source]The first written mention of the river is from 1146, when it was called Ozlawa in a Latin text.[1] According to one theory, the name is derived from the old Czech word osla, which meant 'grind' and referred to the stones suitable for grinding that were found in the river. According to another theory, the name comes from the Celtic (Gaelic) òs, òsa, meaning 'slow flowing water'.[2]
Characteristic
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The Oslava originates in the territory of Matějov in the Křižanov Highlands at an elevation of 584 m (1,916 ft) and flows to Ivančice, where it enters the Jihlava River at an elevation of 205 m (673 ft). It is 101.2 km (62.9 mi) long, which makes it the 24th longest river in the Czech Republic. Before the remeasurement, its length was stated as 99.2 km until 2013 and then 99.6 km until 2021. After a survey by hydrologists, the location of the spring was specified according to the most abundant source and the length of the entire river was redefined.[3] Its drainage basin has an area of 867.0 km2 (334.8 sq mi).[4]
The longest tributaries of the Oslava are:[5]
| Tributary | Length (km) | River km | Side |
|---|---|---|---|
| Balinka | 31.1 | 60.3 | right |
| Chvojnice | 21.0 | 17.6 | left |
| Bohdalovský potok | 17.0 | 83.0 | right |
| Oslavička | 15.1 | 58.1 | right |
| Okarecký potok | 13.0 | 32.6 | right |
| Jasinka | 12.8 | 39.4 | left |
| Babačka | 10.7 | 70.6 | left |
| Polomina | 10.4 | 47.3 | left |
Settlements
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The largest town on the river is Velké Meziříčí. The river flows through the following settlements: Nové Veselí, Ostrov nad Oslavou, Velké Meziříčí, Náměšť nad Oslavou, Oslavany and Ivančice.
Bodies of water
[edit | edit source]The Mostiště Reservoir with an area of 88 ha (220 acres) is constructed on the river and is the largest body of water in the basin area. A notable body of water is also the fishpond Veselský rybník with an area of 81 ha (200 acres).[4]
Fauna
[edit | edit source]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 at the lower river section.[6]
Tourism
[edit | edit source]The Oslava is suitable for river tourism. About 88 km of the river is navigable.[7][8]
References
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External links
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- River flow at Oslavany station – Flood Warning and Forecasting Service of the Czech Hydrometeorological Institute
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