The lake reaches a maximum depth of approximately 31.7 meters.
It is part of the 'Meteliai Lakes' complex along with Lake Metelys and Lake Obelija.
Lake Dusia is one of the few places in Lithuania where the rare European whitefish (Coregonus albula) can be found.
The water transparency often allows visibility down to 4-5 meters during mid-summer.
It acts as a primary research site for the Meteliai Regional Park Directorate for tracking migratory waterfowl populations.
Lake Dusia is the largest lake in the southern Lithuania region and the third-largest in the entire country. Located within the Meteliai Regional Park, it occupies a surface area of approximately 2,334 hectares. The lake is categorized as a mesotrophic body of water, noted for its high water transparency and sandy, gradually deepening shoreline. It serves as a significant habitat for various bird species, protected under the Natura 2000 network. The lake basin formed during the last glacial period, resulting in a characteristic kettle-hole morphology. It is a popular destination for windsurfing and sailing due to its open exposure and consistent wind patterns. The lake is surrounded by glacial moraine hills, which provide elevated vantage points over the water surface.
The observation deck at the Meteliai Regional Park exhibition center, which overlooks the shoreline and the lake expanse.
Bring polarized sunglasses to better observe the lake's aquatic vegetation and underwater topography.
Utilize the designated public bathing areas, as the lake bottom can be unpredictable in unmanaged zones.
Windsurfers should check local weather stations for wind velocity, as the large surface area creates significant wave action.
Do not attempt to swim across the lake without a support vessel, as the central area experiences strong, unpredictable currents.
Respect protected nesting zones by staying on marked trails; motorboat speeds are restricted to minimize shoreline erosion.
