Lake Stora Lee is located on both sides of the boundary between Norway and Sweden. The Norwegian part is in the Aremark and Marker Municipalities in Østfold County and lays 102 metres over sea level.
Lake Stora Lee is a clear-water lake with excellent Secchi results. It’s 70 km long and has more than 300 large and small islands helping to create many superb fishing sites. The lake has a low nutrition level and great depth. The water is surrounded by steep forested slopes covered with coniferous and some deciduous trees. There is some cultivated land farthest in low-lying coves. Its deepest point is102 metres and the average depth 39.6 metres.