Köyliönjärvi
| Köyliönjärvi | |
|---|---|
| Location | Köyliö, Finland |
| Coordinates | 61°08′14″N 022°19′36″E / 61.13722°N 22.32667°E |
| Primary outflows | Köyliönjoki |
| Basin countries | Finland |
| Surface area | 12.42 km2 (4.80 sq mi) |
| Max. depth | 12.81 m (42.0 ft) |
| Surface elevation | 40.5 metres (133 ft) |
| Islands | 4 |
| Settlements | Köyliö |
| References | |
Köyliönjärvi (Lake Köyliö, Swedish: Kjulo träsk) is a lake in the municipality of Köyliö, Finland. Lake Köyliö and its surroundings are classified as one of the National landscapes of Finland. The area has been inhabited continuously since the Iron Age.