Dzierżno Duże Lake

Dzierżno Duże Lake is a large reservoir near Gliwice, shaped by the water and industrial landscape of Upper Silesia. Its open views and broad shoreline attract anglers and people looking for space by the water, but it should not be presented as a guaranteed bathing lake or classic resort.

Landscape and recreation

The reservoir lies in an environment transformed by the Gliwice Canal. Its shores show the contrast between a wide water surface and the industrial history of the region. You can plan a daylight walk or landscape stop; fishing requires compliance with current rules and the waterbody operator’s restrictions.

Check water-safety notices

In 2026, Polish Waters reported preventive measures linked to Prymnesium parvum, known as golden algae, in the Gliwice Canal and the risk of migration towards the reservoir. Before visiting, check current notices from Polish Waters, GIS and local services. Do not swim or let animals enter the water when warnings are in force.

Planning a visit

Arrive in daylight and use only legal roads and access points. Keep away from hydraulic structures and signed-off areas, and do not treat an open shore as a guarantee of safe access. Conditions can change quickly, particularly after heavy rain.