Plan D'eau De Super Besse

France Lake 1 - Excellent

Lac des Hermines is a bathing lake located in the commune of Besse-et-Saint-Anastaise. The lake has been subject to regulatory monitoring of bathing water quality since 2014, with a comprehensive profile revision completed in October 2023. The water body is used for swimming and leisure activities. Water quality monitoring focuses on bacteriological parameters including Escherichia coli and intestinal enterococci, as well as cyanobacteria and their toxins.

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Water

Lac des Hermines is a lake (plan d'eau) with morphological characteristics documented in the profile. The water body has defined inlet streams and is managed hydraulically. Specific depth and area measurements are referenced in the document sections but not stated in the extracted text.

Location

Commune of Besse-et-Saint-Anastaise. The lake has a designated bathing beach area.

Water Quality

Water quality is monitored under Directive 2006/7/CE for bacteriological parameters. Historical monitoring data exists from 2014 onwards. Episodes of phytoplankton proliferation and macroalgae development have been documented. Water transparency has been measured. Nutrient concentrations in the bathing water have been assessed.

Risks

Cyanobacteria proliferation and phytoplankton blooms have occurred. Eutrophication is a documented concern related to nutrient inputs. Animal access to the beach presents a contamination risk. Pollution sources include collective wastewater systems, non-collective sanitation, rainwater runoff, agricultural activities, and potential accidental spills.