LSG-Duelmener See, Protected nature area in Haltern am See, Germany.

Dülmener See is a lake situated within a protected landscape area bordering Haltern am See and Dülmen. The site encompasses water surfaces and adjacent zones integrated into a broader network of natural conservation areas.

The Dülmener See lies in a chain of lakes in the Haltern am See area, near the boundary with Dülmen, together with the Bruchteich, Havichorstteich, Oedlerteich and Vogelvennteich ponds. Its south shore holds a bathing beach, a campsite and a holiday park; the heavily visited Silberseen lie a few hundred metres to the south. The sources record no date for a protection designation.

The lake lies in a chain of ponds and small lakes that includes the Bruchteich, Havichorstteich, Oedlerteich and Vogelvennteich. Its south shore holds a Strandbad open-air swimming area together with a camping and holiday park, while the heavily visited Silberseen lie a few hundred metres to the south.

The lake is accessible from several entry points with designated areas for swimming and camping activities. Plan your visit based on seasonal opening periods, as not all zones remain open year-round.

This water body forms part of an interconnected lake system in the region that includes Bruchteich, Havichorstteich, Oedlerteich, and Vogelvennteich. This connection creates a diverse ecosystem with multiple aquatic habitats within a concentrated area.