S. Félix Da Marinha

18.4°C Water temp · Sep 9

Portugal Coastal 1 - Excellent 18.4°C

Satellite image of S. FÉLIX DA MARINHA — Satellite image © Esri

S. Félix da Marinha is an urban beach located in Vila Nova de Gaia with an extensive sand strip bordered by a line of dunes. The beach has both sandy and rocky morphology. It is situated on the Douro River in the PTCOST3 water body.

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Water

Douro River (Bacia Hidrográfica do Douro). Water body code: PTCOST3.

Location

Vila Nova de Gaia municipality. Coordinates: Latitude 41.032738°, Longitude -8.646894°.

Season

June 14, 2025 to September 14, 2025. Sampling frequency: every 3 weeks.

Water Quality

Water quality is classified according to Decreto-Lei 135/2009 amended by Decreto-Lei 113/2012. No days of bathing prohibition or advisory against bathing occurred due to short-term pollution events during the 2024 bathing season. Potential microbiological pollution sources include faecal contamination from the local sanitation network and the Prego tributary (ribeira do Prego).

Risks

Short-term pollution is unlikely but may occur due to excessive surface flow of the drainage network and tributaries during rainfall, leading to entrainment of microbiological load. Malfunctions in the wastewater lifting station may also cause pollution. Cyanobacteria have a moderate potential for proliferation with a history of bloom occurrence. Macroalgae and phytoplankton have low proliferation potential with no history of occurrence.