Network Overview

The Urban Flooding Network (UF) aims to assist cities to address the impacts of floods in the urban space. 

Floods is the climate change risk that causes more impacts in C40 cities. Thus, in order to support cities, C40 launched the Urban Flooding. There are different approaches that can help cities to adapt to flood impacts, such as LID - Low Impact Development; BMP – Best Management Practices; WSUD – Water Sensitive Urban Design; SUDS – Sustainable Urban Drainage Systems and the Spongies Cities. The main concept behind these methodologies is to acknowledge geographical and gravitational water courses -both historically and with changed quantities and frequencies of flow and to reintroduce spaces in the city where water can flow, percolate, evaporate or be stored. A mix of green and grey infrastructure is crucial to manage water and make the city adapt to flood risks.

Driven by cities demand, the Urban Flooding Network will discuss the challenges and promote the opportunities to face floods through four Work Streams:

1. Measuring and monitoring urban flooding: Supporting cities to assess flooding by sharing the tools and technologies to map cities’ flood-prone areas. Assisting cities to assess flooding impacts on resident and workforce populations as well as critical assets and infrastructure that may be vulnerable. 

2. Flood Response: Sharing measures cities can take to quickly react to a significant flood event, including the best practices in emergency response strategies. 

3. Flood Reduction: Supporting cities to adapt to floods through sustainable drainage, retention, storage, infiltration, recapture, and integration of water in urban ecosystems (blue-green infrastructure). 

4. Governance and holistic water management: Engagement of stakeholders and communities in order to understand and manage urban flooding as one element of a larger strategic water management plan.  

"Designing urban spaces to deal with climate change can make cities live up to the utopian hopes of modern architects and urban planners, who dreamed of building metropolises that would wave people and their living spaces into organic relationships." 
– Ashley Dawson, author of Extreme Cities

"Every city must plan ahead to confront, manage, and where possible, fully head-off the growing risks [from climate change]."

Jeffery Sachs, Climate Change and Cities 2011