Ossiacher See
General data
- Name: Ossiacher See
- Water system: Danube
- Water type: Natural lake
- Progression: Seebach River -> Lieser (Drava tributary) -> Drava -> Danube -> Black sea -> Mediterranean Sea -> Atlantic Ocean -> Planet Earth
- Climates: Continental
- Continents: Europe
- Countries: Austria
Lake Ossiach (German: Ossiacher See, Slovene: Osojsko jezero) is a lake in the Austrian state of Carinthia. It is the state's third largest lake after Lake Wörth (German: Wörthersee) and Lake Millstatt (German: Millstätter See). The lake is 501 m above sea level. Its average depth is 19.6 m with a maximum depth of 52.6 m. The total surface area is approximately 10.8 km2.