Chenes-Lieges (Lac Marin)

20.8°C Water temp · Jun 8

France Coastal 1 - Excellent 20.8°C

Satellite image of CHENES-LIEGES (LAC MARIN) — Satellite image © Esri

Lake Hossegor contains four designated bathing beaches: Parc, Rey, Chênes Lièges, and Blanche. These beaches are located in the Landes department in southwestern France within the municipality of Soorts-Hossegor. The bathing waters are monitored for bacteriological quality and cyanobacteria presence. Water quality is influenced by rainfall patterns, wind direction, and various pollution sources including domestic wastewater, stormwater runoff, agricultural activities, and recreational uses.

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Water

Lake Hossegor in the Landes region of southwestern France. The lake receives water from the Bourret-Boudigau watershed.

Location

Soorts-Hossegor, Landes department, France. The four beaches (Parc, Rey, Chênes Lièges, and Blanche) are located around Lake Hossegor. Contact: SMGBL, Mairie de Messanges, 40660 Messanges; smgbl.qualite@gmail.com; 0623373399.

Season

Monitoring occurs primarily during the summer bathing season (July–August).

Water Quality

Bacteriological monitoring has been conducted since 2000 across all four beaches. Water quality classification is determined by compliance with sanitary control thresholds. Both official sanitary controls and self-monitoring (autocontrôle) are performed. Cyanobacteria monitoring follows a regional alert and monitoring protocol established by the ARS (Regional Health Authority). Water quality correlates with rainfall intensity and frequency during the bathing season.

Risks

Potential cyanobacteria proliferation is monitored. Stormwater discharges and combined sewer overflows present during heavy rainfall. Domestic wastewater from collection systems and non-collective sanitation zones. Agricultural runoff from the surrounding watershed. Industrial and craft activity discharges. Moorings and pleasure ports may contribute pollutants.