The Oster (Ukrainian: Остер) is a river in the northern Ukrainian oblast of Chernihiv. The river is a left tributary of the Desna River. It is approximately 199 km long and its basin area is 2,950 km². It is connected by canals and streams with the Trubizh River, which flows southwest from Kyiv into the Dnieper River. Important towns and villages on the river include: Nizhyn, Kozelets, Roslavl and Oster.[1][2][3]

Oster, Остер
The watershed of the Oster
Location
Country	Ukraine
Physical characteristics
Source
• location	Chernihiv Oblast
Mouth	Desna
• coordinates	50.936°N 30.8478°E / 50.936; 30.8478
Length	199 km (124 mi)
Basin size	2,950 km2 (1,140 sq mi)
Discharge
• average	3,2 m³/s[1]
Basin features
Progression	Desna→ Dnieper→ Dnieper–Bug estuary→ Black Sea

References

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На других языках

[de] Oster (Desna)

[es] Río Oster

[it] Oster (fiume)

[ru] Остёр (приток Десны)