Les Grandes-Dalles

20.1°C Water temp · Sep 11

France Coastal 1 - Excellent 20.1°C

Satellite image of LES GRANDES-DALLES — Satellite image © Esri

Three bathing beaches located in the Valmont Canton area: Saint-Pierre-en-Port, Grandes-Dalles, and Petites-Dalles. These are coastal beaches in northern France subject to tidal influences and ocean currents. The beaches serve recreational bathing purposes and are monitored for bacteriological water quality.

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Water

Coastal marine water bodies subject to tidal effects. The Valmont and Durdent rivers flow into the area. Currents and wave conditions are influenced by oceanic and meteorological factors including tides, swell, wind, and coastal hydrology.

Location

Saint-Pierre-en-Port, Sassetot-le-Mauconduit, and Saint-Martin-aux-Buneaux communes in the Valmont Canton, Normandy, France. The Rouen office of the managing agency is located at Immeuble Le Trident, 18 rue Henri Rivière, 76000 Rouen.

Season

Monitoring is conducted during the official bathing season.

Water Quality

Bacteriological monitoring is conducted during the bathing season at designated control points. Water quality classifications are assigned to each beach. Historical monitoring data shows variations in compliance with bathing water quality standards. Potential pollution sources have been identified including wastewater systems, agricultural activities, and industrial operations.

Risks

Potential pollution sources identified in the area include wastewater discharge systems, agricultural runoff, industrial activities, waste management facilities, and port operations. Macro-algae proliferation and phytoplankton growth potential have been evaluated.