Lasne

20°C Water temp · Sep 11

France Coastal 1 - Excellent 20°C

Satellite image of LASNE — Satellite image © Esri

Lasne is a bathing beach located in the commune of Saint Armel in the Morbihan department, in the Presqu'île de Rhuys area of Brittany, France. The beach is subject to monitoring and vulnerability assessment due to its marine environment and recreational use. The site experiences varying water quality conditions influenced by oceanic, climatic, and hydrological factors.

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Water

Marine beach environment within the Atlantic coastal zone. The area experiences tidal variations and swell patterns typical of the Brittany coast. Water quality is influenced by oceanic circulation and local hydrographic conditions.

Location

Saint Armel, Morbihan department, Brittany, France. The beach is part of the Presqu'île de Rhuys coastal community.

Water Quality

Water quality is monitored for bacteriological indicators including Escherichia coli and enterococci. Classification status is subject to change based on monitoring results and compliance with EU bathing water directives (1976 and 2006). Analysis shows that water quality can be impacted by sewage network overflows and treated effluent discharge from wastewater treatment stations.

Risks

Potential pollution sources include sewage network overflows from pumping stations, treated wastewater discharge from treatment plants, stormwater runoff during wet periods, and macro-algae proliferation. Hydrodynamic modeling indicates that pollutant dispersion varies with meteorological and oceanic conditions.