| Vahvajärvi | |
| Pushpin Map: | Finland |
| Coords: | 61.65°N 66°W |
| Inflow: | Kissakoski canal |
| Outflow: | via Ripatinkoski Rapids to the lake Iso-Sämpiä |
| Basin Countries: | Finland |
| Area: | 13.888km2 |
| Shore: | 70.65km (43.9miles) |
| Elevation: | 88.6m (290.7feet) |
| Frozen: | December–April |
| Islands: | Iso Pihlajasaari, Sätkysaari |
| Cities: | Hämeenmäki |
Vahvajärvi is a lake in Hirvensalmi, Finland. It is a medium-sized lake in the Kymijoki main catchment area. It is located in the region of Southern Savonia. The length of the lake is about ten kilometers.[1]
The lake gets its water through the Kissakoski canal from the lake Liekune, which is a part of a larger lake complex, Puula. When the canal was dug, the water level in Vahvajärvi rose several feet. The water then runs to Ripatinkoski (Ripatti Rapids), a one-mile stream between Vahvajärvi and Iso-Sämpiä.[2]