Kvarnsjön is the lake situated between Ottersjön and Bergsjön, and Kvarnsjön is connected to Bergsjön via a narrow strait. Around the lake there are a couple of wind shelters with barbecue areas, and a boat is available for hire. Boat permits can be purchased and keys collected at OK Q8 in Karlsborg (tel. 0505-441 51). Please note that boat hire is payable in cash only. Information on fishing permits can be found on the Hökensås Sportfiske website: https://www.hokensas.se/tiveden
Kvarnsjön has fairly steep drop-offs on its southern side, closest to the canal leading to Bergsjön, but becomes considerably shallower in the northern half, towards Ottersjön. There is a good stock of perch and pike. From 1 July 2026, small rainbow trout will be stocked in both Kvarnsjön and Bergsjön. This is to introduce fish that are more likely to bite into these lakes, thereby offering the chance of a successful fishing trip. The fish are approximately 4–6 hg in size and are perfect for cooking by the lake or taking home to cook or smoke. We would prefer that any fish caught are not returned to the water but are taken home to provide a wonderful culinary experience. Both the white and yellow fishing permits are valid in Kvarnsjön and Bergsjön. Once three salmonid fish have been caught, the fishing licence is exhausted and a new licence is required to continue fishing.
The lake is situated in Karlsborg Municipality in Västergötland and forms part of the Motala Ström’s main catchment area. It covers an area of 0.0975 square kilometres and lies 139.4 metres above sea level.
