Baie Des Trepasses

20.8°C Water temp · Jul 22

France Coastal 1 - Excellent 20.8°C

Satellite image of BAIE DES TREPASSES — Satellite image © Esri

Baie des Trépassés is a bathing water area located in the municipalities of Cléden-Cap-Sizun and Plogoff in Brittany, France. The bay is situated in a coastal environment with strong oceanic and meteorological characteristics influenced by the Pointe du Raz. Monitoring data from 2005-2015 shows variations in bacterial contamination levels, particularly E. coli and enterococci concentrations. The bathing area is designated within a Natura 2000 protected zone under the Habitats Directive, reflecting its ecological significance.

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Water

Coastal bay with tidal currents influenced by Atlantic oceanic conditions. Monitoring point established for bacterial sampling. Hydrographic network present within the bay with average monthly flow rates measured during summer period.

Location

Baie des Trépassés, municipalities of Cléden-Cap-Sizun and Plogoff, Brittany, France. Near Pointe du Raz.

Water Quality

Water quality classified based on E. coli and enterococci concentrations monitored by health authorities (ARS) from 2005-2015. 95th percentile values calculated over 4-year periods. Shellfish farming areas classified in the vicinity with microbiological contamination monitoring conducted by Ifremer.

Risks

Green algae (ulva) blooms recorded at multiple sites since 1997. Bacterial contamination influenced by rainfall and hydrological conditions. Potential pollution sources include permanent natural water flows, agricultural activities, non-collective sanitation installations, and collective sewerage systems within the study basin.