| Korpijärvi | |
| Coords: | 61.249°N 27.104°W |
| Type: | Lake |
| Pushpin Map: | Finland |
| Catchment: | Vuoksi |
| Basin Countries: | Finland |
| Area: | 31.219km2 |
| Depth: | 10.04m (32.94feet) |
| Max-Depth: | 41.27m (135.4feet) |
| Volume: | 0.313km3 |
| Shore: | 101.06km (62.8miles) |
| Elevation: | 82.3m (270feet) |
| Frozen: | December–April |
| Islands: | Korpisaari, Ilkonsaari |
| Cities: | Mäntyharju |
Korpijärvi is a medium-sized lake in the Vuoksi main catchment area. It is located in the region Southern Savonia of Finland.[1]
Korpijärvi is divided in two parts, which are called Valtolanselkä and Halmeniemenselkä. Between them is Tommolansalmi strait, and the Finnish National Road 15 crosses the lake there.In 1978, a Korean Air Boeing 707 was forced to land on the frozen lake after it was shot down after accidentally entering Soviet airspace. 2 killed.
In Finland there are 40 lakes that are called Korpijärvi. This is the biggest of them.[2]