St-Jouin-Plage

17.6°C Water temp · Jul 22

France Coastal 2 - Good 17.6°C

Satellite image of ST-JOUIN-PLAGE — Satellite image © Esri

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Water

Coastal waters of the English Channel (La Manche) and Seine Bay, with hydrodynamic modeling of a 3D local model covering the area between Le Havre and Saint-Jouin-Bruneval.

Location

Three bathing beaches are studied: Saint-Jouin-Bruneval, Sainte-Adresse, and Le Havre, all located in the Havraise agglomeration area between Le Havre and Saint-Jouin-Bruneval.

Water Quality

E. coli contamination modeling was performed with bacterial decay coefficients (T90 values of 20, 30, and 40 hours). Water quality thresholds of 500 EC/100mL and 1000 EC/100mL were analyzed across multiple discharge scenarios.

Risks

Bacterial contamination from point-source discharges was identified as a risk. Discharge events were modeled under various hydrological and meteorological conditions including dry weather, rainfall events, and low tide periods.