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Guide describes an old sand excavation near Kronau with mostly good visibility and good facilities.
Freshwater lake with easy entries and seasonal jellyfish.
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The lake is managed through the adjacent dive center and club access during opening hours.
Althäuser See is a freshwater lake in Kronau with a local dive center right next to the water, multiple purpose-built entry points, and a controlled setup for lake diving. It is a good place for relaxed practice and freshwater wildlife watching. The lake is best known for its seasonal freshwater jellyfish and for a broad mix of fish and invertebrate life, making it feel more like a structured inland training site than an open-water adventure dive.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
Up to 17m
Depth Note
Maximum depth is 17 m.
Best Season
July to September
Typical Conditions
Freshwater lake conditions with controlled entry points and calm water.
Hazards, restrictions, and access requirements.
Safety Notes
Follow opening hours and local dive-center rules; this is a controlled inland lake environment.
Access Restrictions
Opening hours apply, and access is managed through the adjacent dive center.
Community notes to help plan your visit.
Scuba Diving
Entry options include stairs, a jetty, or a boat ladder, making it a practical inland lake dive for practice and wildlife watching.
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Althäuser See.
Directional shelter context for incoming swell.
Community dive logs and visit reports for this site.
No Dive Logs Yet
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Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Guide describes an old sand excavation near Kronau with mostly good visibility and good facilities.
Municipal recreation page describes the lake as a well-known leisure facility with a campsite beside it.
Dive-center page says the lake sits next to the base, is open to club members year-round, and has weekend fills.
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