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HYDROS

Investigation ·

Cochadas, Tocha, Cantanhede, Coimbra, Portugal

40.37310, -8.73191Insufficient data

Guided assessment

No photograph — observations come from the guided checklist, attributed to the reporter.

Observation

What is visible

  • ColourConfirmed

    95%

    The water appears deep blue with a slight greenish tint.

  • ClarityConfirmed

    90%

    The water is relatively clear, though the riverbed is not visible.

  • TurbidityConfirmed

    85%

    The surface shows low turbidity with minimal cloudiness.

  • SurfaceConfirmed

    90%

    Gentle ripples and subtle wave patterns are visible on the water surface, reflecting the sky.

  • SurroundingsConfirmed

    90%

    The water is bordered by a concrete embankment and a tree-lined promenade on the left, with a modern bridge spanning the river in the background.

Evidence

What sources state

No sourced claims were extracted for this investigation.

Assessment

Insufficient data

INSUFFICIENT DATA

confidence 30%

30%

The available evidence does not support a risk conclusion either way.

Inference

The photograph shows clear, deep‑blue water with low turbidity and no visible signs of pollution. No sourced data describe water‑quality measurements at this point, and the only contextual factor is a wastewater‑treatment plant 442 m upstream, but its discharge quality is unknown. Because there is no location‑specific evidence of contamination, a risk conclusion cannot be drawn.

Risk factors considered

  • proximity of wastewater‑treatment plant
  • absence of water‑quality data for this site

What to do next

Treat the water as untested; avoid drinking, cooking, or direct contact until laboratory analysis is performed by a qualified authority (e.g., the regional environmental agency).

What this cannot tell you

  • Cannot determine chemical, bacterial, or heavy‑metal concentrations
  • Cannot assess odor or fish mortality reported by the user
  • No site‑specific water‑quality measurements are available
  • Nearby wastewater plant data are not provided

Interoperability

Context

Nearby mapped features

  • Estação de Tratamento de Águas Residuais de CantanhedeWastewaterDownstream442 m

Proximity is context only. Nothing here indicates that a listed feature affects this water.

Sources

Where the information came from

(A): Location of Fervença River, Bragança city, sampling ...researchgate.netScientificdate unknownUrban rivers are vulnerable to contamination from wastewater discharges and diffuse urban inputs. This study investigates the spatial-temporal distribution of ...3. Surface water quality monitoring - summary: Portugaleea.europa.euGovernmentdate unknownThe objectives of the monitoring programme are to assess the environmental state and trends of surface waters, to provide informationFervença river water quality evaluationbibliotecadigital.ipb.ptUnverifieddate unknownThe water quality of the Fervença River in Bragança, Portugal, was assessed to use the WQI by monthly collections between January 2022 and June 2022.Tracking Urban Impact on the Fervença River via Water ...inz-min.onlineUnverifieddate unknownThis study utilized The WQI was used to evaluate the water quality of the Fervença River in Bragança, Portugal, from January to June 2022.Water quality of the Fervença river hydrographic basin - Oasisbroasisbr.ibict.brUnverifieddate unknownthe quality of the water is "Bad" study, the microbiological water quality of the Fervença river hydrographic basin, Bragança, Portugal, exceed ...Tracking Urban Impact on the Fervença River via Water ...bibliotekanauki.plUnverifieddate unknownFervença River flows through the city of Bragança, the water quality indices decrease in most campaigns, particularly after Point 5.Olhos Da Fervença – Water Qualitywildopenwater.comUnverifieddate unknownOfficial bathing water quality data and pollution warnings for Olhos Da Fervença. It can incapacitate even strong swimmers within seconds and ...Beaches - info água - APAinfoagua.apambiente.ptUnverifieddate unknownBased on the monitoring results, the quality of the bathing water is assessed and given a classification as “Poor”, “Acceptable”, “Good” or “Excellent ...PR12 – SEI/ROTA DA FERVENÇAvisitseia.ptUnverifieddate unknownPróximo do cabeço da Carnazeda, as águas da ribeira da Fervença precipitam-se numa cascata, proporcionando neste local uma ampla vista sobre o vale e a aldeia.Praia de Olhos da Fervença - Município de Cantanhedefacebook.comCommunitydate unknownAproveite as nossas praias, mas sempre em segurança, respeitando as regras publicitadas nas placas informativas e as normas impostas pela DGS.

Exports