Les Dames

20.4°C Water temp · Sep 11

France Coastal 1 - Excellent 20.4°C

Satellite image of LES DAMES — Satellite image © Esri

This document is a vulnerability profile for bathing waters in Noirmoutier-en-l'Île, a coastal municipality in France. It assesses six bathing beaches: Fort Larron, Sableaux, Dames, Clère, Grand Vieil, and Linière, as well as Luzéronde. The profile examines hydrological, geomorphological, and oceanographic contexts, water quality monitoring results, and potential pollution sources including wastewater systems and stormwater discharge.

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Water

Marine coastal waters in the Atlantic Ocean. The area includes tidal flats, salt marshes, and sandy beaches. General oceanographic characteristics include seabed composition and tidal current patterns.

Location

Noirmoutier-en-l'Île, a coastal municipality in France. The profile covers multiple beaches within the municipality.

Water Quality

Water quality monitoring conducted by ARS (health authority) for bathing waters and shellfish harvesting areas. IFREMER surveillance network monitoring is in place. Quality assessments based on sanitary indicators and measurements from 2010 campaigns in July and August. Potential pollution sources identified include non-collective sanitation systems, collective wastewater treatment stations (Casie-Barbâtre and Salaisière), discharge points, and stormwater runoff.

Risks

Potential pollution sources include individual septic systems, wastewater treatment discharges, rainwater outlets, and macroalgae proliferation potential. Monitoring indicates seasonal and rainfall-dependent pollution risk variations.