Heiliger See
About Heiliger See
This freshwater lake in Potsdam’s New Garden is managed by the Prussian Palaces and Gardens Foundation and has controlled daily diving capacity. Diving is possible with prior registration and is generally straightforward. Underwater you can expect a sandy bottom with shells; from around 3 m depth the substrate becomes silty/sedimentary. Fish life reported includes perch, pike, catfish, rudd, and occasional eel, with visibility varying strongly by season.
Where Is Heiliger See?
Heiliger See Planning Details
Depth range, seasonality, and planning context.
Reported Depth
3m+
Depth Note
Sediment/silty conditions are described from about 3 m depth; no maximum depth is provided.
Typical Conditions
Visibility varies by season and is reported around 0.5–4 m. Sandy bottom with shells, with silty sediment from about 3 m depth.
Safety & Access At Heiliger See
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Daily diver numbers are limited and prior registration is required. Visibility can be very low depending on season.
Access Restrictions
Diving is limited to 10 divers per day and requires prior registration.
Legal Notes
The lake is under the management of the Prussian Palaces and Gardens Foundation Potsdam (New Garden).
Local Intel For Heiliger See
Community notes to help plan your visit.
Scuba
Suitable as a straightforward freshwater scuba dive with variable visibility and silty conditions below ~3 m.
Heiliger See Dive Conditions Planner
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Exposure Profile at Heiliger See
Directional shelter context for incoming swell.
Recent Logged Visits At Heiliger See
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Heiliger See
Average conditions based on logged dives & visits.
Heiliger See Guide - Sources and Updates
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