| Rautavesi | |
| Pushpin Map: | Finland |
| Location: | Hartola (Finland), Joutsa |
| Coords: | 61.6333°N 84°W |
| Lake Type: | Natural |
| Outflow: | Rääpönsalmi, Angesselkä |
| Catchment: | Kymijoki |
| Basin Countries: | Finland |
| Area: | 46.165km2 |
| Depth: | 8.51m (27.92feet) |
| Max-Depth: | 64.71m (212.3feet) |
| Volume: | 0.393km3 |
| Shore: | 207.49km (128.93miles) |
| Elevation: | 92.3m (302.8feet) |
| Frozen: | December–April |
| Islands: | Petäjäsaari, Tiukansaari |
Rautavesi (Hartola) is a medium-sized lake of Finland. It is located in Hartola and Joutsa municipalities, in the regions Central Finland and Päijänne Tavastia. The water quality in the lake is excellent. Water flows down to the lake Jääsjärvi.[1] The lake is quite near to the Finnish national road 4, about ten kilometers southwards from Joutsa.