Alte Donau, Strandbad

Austria Lake 1 - Excellent

The Alte Donau Strandbad is a public beach and bathing area operated by the City of Vienna on the former main arm of the Danube River. Created as an oxbow lake during river regulation in 1870-1875, it is a shallow lake with an average depth of 2.3 metres that is intensively used for recreation, including swimming, boating, and fishing.

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Water

Oxbow lake formed from the former main channel of the Danube River during regulation work (1870-1875). Shallow lake with average depth of approximately 2.3 metres and maximum depth of approximately 4.0 metres. Generally well-mixed with no permanent water stratification. Water renewal time: approximately 6 months.

Location

Located on the Upper Alte Donau (Old Danube) in Vienna, Austria. Operated as a public bathing beach by the City of Vienna (Magistrat der Stadt Wien). Nearest city: Vienna.

Facilities

The bathing beach includes showers and toilet facilities (Duschen, Toiletten). Waste disposal available. Daily capacity during peak season: 10,000 bathers. Lifeguard and monitoring services operated by the Vienna health authority.

Season

Monitored year-round; official bathing season not explicitly specified in provided text.

Water Quality

Microbiological bathing water quality assessed over the past 5 years. Water body classified under ecological and chemical status assessments. Nutrient data and limnological parameters monitored. Assessment includes evaluation of cyanobacteria and macroalgae bloom risks.

Risks

Potential for short-term pollution (less than 72 hours) assessed. Risk of cyanobacteria and macroalgae mass proliferation evaluated. Management measures in place for pollution incidents. Specific pollution sources identified in catchment area.