La Reserve

20.2°C Water temp · Jun 8

France Lake 1 - Excellent 20.2°C

Satellite image of LA RESERVE — Satellite image © Esri

Plage du Port and Plage de la Réserve are two bathing areas located in Gastes, a commune in the Landes department of southwestern France. The area benefits from an oceanic climate and a sandy 106 km coastline. These beaches are situated within a broader hydrographic context that includes a chain of coastal lakes and inland water bodies. The bathing areas are subject to regular sanitary monitoring and quality assessments to protect public health.

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Water

Atlantic Ocean bathing areas with sandy beaches. The Landes department has a continuous sandy coastline of 106 km with a dune ridge resulting from wind dynamics. The area is characterized by sandy sediments that contribute to natural soil purification through infiltration.

Location

Gastes, Landes department, Nouvelle-Aquitaine region, France. Contact: Mairie - 40660 Messanges; SMGBL - smgbl.qualite@gmail.com - 0623373399.

Water Quality

Water quality is subject to regular sanitary health monitoring (contrôle sanitaire) and self-monitoring (autocontrôle) since 2000. Cyanobacteria monitoring has been conducted since 2010 with alert and monitoring protocols in place. Results classification ranges from non-compliant to excellent, with annual variations documented. Bacteriological monitoring includes testing for fecal indicators.

Risks

Potential risks include cyanobacteria blooms requiring analytical monitoring and alert protocols. Physalies (jellyfish) have been documented as specific phenomena in the bathing context. Phytoplankton and macroalgae presence is monitored. Multiple pollution sources identified in the surrounding watershed include wastewater, stormwater, agricultural runoff, marine pollution, and leisure activities that could affect water quality.