Vioreau

France Lake 0 - Not classified

The Grand Réservoir de Vioreau is a freshwater bathing site located in the Loire-Atlantique department of France. The bathing water is classified as good quality but has two pre-identified potential risks: cyanobacteria proliferation and bacterial contamination. The site operates under the European Bathing Water Directive 2006/7/CE framework for water quality monitoring and management. A bathing profile was established to assess and manage pollution risks and protect public health.

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Water

Freshwater reservoir. The document references water level fluctuations (marnage) and notes that water transparency affects drowning risk and ecosystem conditions.

Location

Grand Réservoir de Vioreau, Loire-Atlantique (44), France. The study area includes the Joué sur Erdre zone.

Facilities

A rescue post (poste de secours) is present. Personal hygiene facilities (dispositifs d'hygiène corporelle) are available. The beach has defined opening hours and surveillance times.

Season

The bathing season is monitored with regulatory surveillance programs. Official bathing season classification was first established under new European rules as of the 2013 bathing season.

Water Quality

Water quality classification: good. The site is classified as Type 2 bathing profile. Monitoring has identified fecal coliforms and intestinal streptococci/enterococci concentrations. Bacterial pollution peaks correlate with rainfall events. Water transparency is monitored as a risk indicator.

Risks

Cyanobacteria proliferation. Bacterial contamination (fecal coliforms, intestinal streptococci, enterococci). Risk of contact with wild animals in proximity to the site.