The lake is no longer managed by the diving center Jürgens-Tauchschule, as the city of Monheim has terminated the rights of use. There is no further diving operations. The lake is no longer managed by the diving center Jürgens-Tauchschule, as the city of Monheim has terminated the rights of use.

Glessener See in Fühlinger See, Germany, is a freshwater dive site offering depths between 5 and 15 metres, with an average of 8 metres. Divers access the water via the shore. Visibility is variable, ranging from 5 to 15 metres. The site is suited for intermediate divers due to the cold water temperatures and potential for low visibility. Night diving is permitted. The site features a range of temperate freshwater fish and invertebrates typical of the region. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, air fills, and a dive shop offering guided tours.

Grosser Monheimer See is a freshwater lake in Germany offering calm, current-free conditions suitable for beginner divers. Shore entry provides straightforward access to a reef area that ranges from 7 to 14 metres in depth, with an average of 10 metres. Visibility typically fluctuates between 5 and 10 metres, and divers should remain aware of potential entanglement risks and variable visibility. The site supports a variety of temperate freshwater fish and invertebrates typical of the region. On-site facilities include parking, showers, air fills, equipment rental, and guided tours, making it a practical location for those without their own gear.

Fühlinger See in Western Germany is a shore-entry dive site offering shallow conditions suitable for divers building confidence. As a shore dive, it requires no boat access. Conditions at the site are variable, with currents and visibility that can change between visits. Divers should perform a surface assessment of current and visibility before entering the water. The site is accessible year-round, providing a low-stress environment for those starting out. Due to the variable nature of the water, checking locally for current facility information before travelling is recommended.

Hitdorfer See is a freshwater quarry lake in western Germany featuring an artificial reef structure designed to provide a clear focus for divers. The site offers a calm, current-free environment suitable for beginners, with depths ranging from 4 to 18 metres. Entry is via the shore. Visibility varies between 2 and 10 metres, with clearer conditions often found during cooler months when algae growth decreases. The site is well-equipped for a full day of activity, providing on-site parking, toilets, changing rooms, a dive shop, and air fills.

Widdauer See is a freshwater lake dive site featuring an artificial reef and a drop-off that descends from the shallows to a maximum depth of 22 metres. With an average depth of 10 metres and no current, the site is suitable for beginners. Divers access the water via a shore entry located 50 metres from the shore. Visibility typically ranges between 5 and 10 metres. The site offers convenient facilities including parking, toilets, showers, changing rooms, and a rinse station. Divers should exercise caution at entry and exit points, as submerged rocks can be sharp.

Fühlinger See is a freshwater site in Germany offering shore entries for both divers and snorkellers. The lake features depths ranging from 2 to 18 metres, with an average depth of 10 metres. Divers should be prepared for variable visibility between 0 and 15 metres and the presence of thermoclines. The site is suitable for beginners and supports night diving, with typical dive durations of 50 minutes. Facilities include parking, toilets, showers, changing rooms, air fills, equipment rental, a cafe, a dive shop, and guided tours. Hazards include boat traffic, cold water, low visibility, and thermoclines. The habitat supports various temperate freshwater fish and invertebrates.

Fühlinger See is a freshwater lake featuring an artificial reef structure that provides a sheltered environment for divers. The site offers depths ranging from 3 to 18 metres with an average of 10 metres. Entry is via the shore, and divers encounter mild currents. Visibility is highly variable, ranging from 1 to 15 metres. The site is suitable for beginners and supports night diving. Divers should be prepared for cold water temperatures and exercise caution near overhead environments. Facilities include parking, air fills, equipment rental, and a cafe. The habitat supports various temperate freshwater fish and invertebrates typical of the region.