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Made for

The IEEE OneAquaHealth Global Hackathon 2026.

For researchers

How the science works · Open data and FHIR · Source code (Apache-2.0) · Moderator

Sources

FHIR resources declare profiles from the OneAquaHealth implementation guide; signs residents report use a separate Rivulet code system. Forel–Ule class limits after Novoa, Wernand & van der Woerd (2013).

City report

How Coimbra's streams are doing

A one-page summary for neighbours, schools and the city: where to take care, and where a quick check would help most. Built from what residents reported in the last 30 days and places from OpenStreetMap.

Coimbra Toulouse Benevento Gent Oslo Tashkent

578

stream sections mapped

54%

have enough reports to rate

660

reports in the last 30 days

47

people reporting recently

Water health across the city

Very healthy 127
Healthy 38
Some signs of stress 15
Unhealthy 12
Very unhealthy 120
Not checked enough 266

Where to take care

Streams where residents reported warning signs and people or dogs come close to the water. 5 of them are near a playground, school or kindergarten.

Unnamed stream
Avoid contact with the water
Reported: sewage smell, algae or scum, chemical smell or foam, dead fish, heavy litter
Park (Parque Geriátrico de Antanhol), 6 m
Rio Ceira
Avoid contact with the water
Reported: sewage smell, chemical smell or foam, heavy litter
School (Escola Básica do 2º e 3º Ciclo de Ceira), 121 m
Ribeira dos Covões
Avoid contact with the water
Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

Where a visit would help most

People use these places, but nobody has checked the stream beside them in the last 30 days — so nobody can say whether it is fine.

Rio Dueça
Bathing spot (Presa das Bicas), 0 m
Check it
Unnamed stream
Park, 0 m
Check it
Unnamed stream
Park, 0 m
Check it

This city includes demonstration reports while the pilot collects real ones.

Indicative, built from what residents can see and smell — not a laboratory or public health assessment.

Download Coimbra as a spreadsheet (CSV)with each stream's status, interval and confidence.

Researchers and city systems can also take the data as FHIR from the open data page.

Want to go further? The OneAquaHealth project runs the Resilience Map (Benevento, Coimbra, Ghent, Oslo, Toulouse), the Citizen Science project and a Catalogue of Measures for restoring urban streams. Rivulet is an independent prototype and is not affiliated with or endorsed by the project.

Park (Mata Nacional do Choupal), 121 m

Ribeira das Eiras

Avoid contact with the water

Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

School (Escola Básica do 2º e 3º Ciclo Rainha Santa Isabel), 47 m

Ribeira das Eiras

Avoid contact with the water

Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

Playground, 118 m

Ribeira das Eiras

Avoid contact with the water

Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

School (Escola Básica do 2º e 3º Ciclo Rainha Santa Isabel), 111 m

Unnamed river

Avoid contact with the water

Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

Park (Mata Nacional do Choupal), 110 m

Unnamed stream

Avoid contact with the water

Reported: sewage smell, algae or scum, chemical smell or foam, heavy litter

Park, 0 m

Bathing spot (Praia Fluvial de Segade), 17 m

Park (Jardim da Casa do Sal), 0 m

Ribeira de Coselhas

Park (Jardim da Casa do Sal), 0 m

Park (Jardim da Casa do Sal), 0 m

Park (Parque Geriátrico de Antanhol), 14 m