La Liniere

17.4°C Water temp · Jun 8

France Coastal 1 - Excellent 17.4°C

Satellite image of LA LINIERE — Satellite image © Esri

This document is a vulnerability profile of bathing waters for the municipality of Noirmoutier-en-l'Île, located on an island off the coast of western France. It covers six designated bathing beaches with different vulnerability classifications. The profile includes hydrological, geomorphological, and oceanographic context, describes beach characteristics and water uses, and evaluates sanitary quality and potential pollution sources through monitoring data and hydrodynamic modelling.

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Water

Marine coastal waters adjacent to six bathing beaches on Noirmoutier island. The seabed characteristics and general current patterns are described. The area includes salt marshes, tidal channels (étiers), and zones used for shellfish farming and recreational foot fishing.

Location

Noirmoutier-en-l'Île, a municipality on an island off the Atlantic coast of France. The profile covers six beaches: Fort Larron, Sableaux, Dames, Clère, Grand Vieil, Linière, and Luzéronde.

Water Quality

Water quality is monitored by ARS (regional health authority) and IFREMER (national marine research institute). The profile documents sanitary quality of bathing waters and shellfish harvesting areas. Potential pollution sources are identified and evaluated including non-collective sanitation, collective wastewater systems, treatment stations, and storm water outlets. Hydrodynamic modelling was performed to assess contaminant propagation.

Risks

Potential pollution sources include non-collective and collective sanitation systems, wastewater treatment station discharges, and storm water outlets. Macroalgae proliferation potential is assessed. Hydrodynamic modelling examined contaminant dispersion under different flow conditions and wind effects.