Programme 4

Urban Rainwater

Coping with stormwater, flash floods or creating islands of coolness, rainwater management in the city has emerged in recent years as a nature-based solution (NbS) that cannot be ignored in managing a sustainable city.


Workshops "Rain in the City"

Source: Venelle du quartier des Vergers à Meyrin (GE). (©Etat de Genève, Théo Gardiol)


Friends of Ecosystem Based Adaptation FEBA - Urban Eba Working group

The world's urban population will grow from 3.9 billion to 6.3 billion by 2050. (UNESCO, 2012). Faced with the consequences of climate change (pollution, heat waves), the reintroduction of water in cities favours the creation of cool islands and the development of local, effective solutions for sustainable and resilient cities.

The challenge of bringing rainwater back to the city

Stormwater management is everyone's responsibility and must be addressed from the building scale to the watershed. Alternative solutions to "all-pipes" exist, more integrated strategies are recognised; they often constitute effective and sustainable solutions. Although the techniques are relatively simple, important research is being carried out, particularly on phenomena and strategies.

Moreover, awareness and information are essential to move towards a common culture of water management, shared by decision-makers and technicians, urban planners, landscape architects and water management professionals.

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Under development


News - Urban Rainwater

Image On the road to Alternatiba 2023 !
28 August 2023
by Sima Haïrapetian

Once again this year, IRHA will be present at the 9th edition of the Alternatiba Léman festival, to be held in Geneva's Parc des Bastions. The fes...

Image IRHA was at Novatech 2023 !
28 July 2023
by Sima Haïrapetian

IRHA was proud to take part in the 11th Novatech international conference, held at ISARA in Lyon from 3 to 7 July 2023. It was an opportunity for o...

Image Rain in the city
28 June 2022
by Florian Bielser

For the years to come, the problem of better stormwater management in urban areas is a real challenge for the development of cities that are expand...

Other programmes


Programme 1

Rainwater for Water, Sanitation and Hygiene

Access to safe water and sanitation, as well as appropriate hygiene, is a human right and can prevent a significant proportion of water-related diseases.

Read More


Programme 2

Rainfed Agriculture and Food Sovereignty

Rainfed agriculture represents more than 85% of family farming today. Ongoing climate change is impacting on the harvests and food sovereignty of farming communities.

Read More

Programme 3

Disaster risk management and ecosystem restoration

The weakening of forest, mangrove and wetland ecosystems, which helps reduce exposure to major risks, increases the vulnerability of communities to the effects of climate change.

Read More

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