Adaptation tipping points and opportunities for urban flood risk management

The effects of climate change are expected to increase the frequency and magnitude of floods, droughts and heat waves. An emerging method termed adaptation tipping point – opportunity (ATP-O) assesses a system's climate-incurred tipping points and uses opportunities arising from urban developments to introduce adaptation strategies while reducing investment costs. The objective of this research was to apply the ATP-O method to the city of Dordrecht in the Netherlands. The results show that the alternative adaptation strategy proposed (an overland drainage system) would be effective in coping with the effects of climate change where the current management strategy (disconnection of impervious surfaces from sewer systems) fails to do so. The ATP-O also proved helpful in identifying opportunities to adapt at lower costs. This research stimulated discussions between stakeholders on performance objectives, policy development, investment strategies, and flood risk management practices. The sensitivity analysis performed to support such discussion revealed that small variations in acceptability thresholds, associated with policy objectives, can have significant impact on ATP occurrence and timing.

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Community Mapping Supports Comprehensive Urban Flood Modeling for Flood Risk Management in a Data-Scarce Environment

10.5194/egusphere-egu21-4221 ◽

2021 ◽

Author(s):

Louise Petersson ◽

Marie-Claire ten Veldhuis ◽

Govert Verhoeven ◽

Zoran Kapelan ◽

Innocent Maholi ◽

...

Keyword(s):

Risk Management ◽

Data Acquisition ◽

Flood Risk ◽

Drainage System ◽

Flood Risk Management ◽

Future Research ◽

Flood Modeling ◽

Flood Prediction ◽

Urban Flood ◽

Community Mapping

<p>We demonstrate a framework for urban flood modeling with community mapped data, particularly suited for flood risk management in data-scarce environments. The framework comprises three principal stages: data acquisition with survey design and quality assurance, model development and model implementation for flood prediction. We demonstrate that data acquisition based on community mapping can be affordable, comprehensible, quality assured and open source, making it applicable in resource-strained contexts. The framework was demonstrated and validated on a case study in Dar es Salaam, Tanzania. The results obtained show that the community mapped data supports flood modeling on a level of detail that is currently inaccessible in many parts of the world. The results obtained also show that the community mapping approach is appropriate for datasets that do not require extensive training, such as flood extent surveys where it is possible to cross-validate the quality of reports given a suitable number and density of data points. More technically advanced features such as dimensions of urban drainage system elements still require trained mappers to create data of sufficient quality. This type of mapping can, however, now be performed in new contexts thanks to the development of smartphones. Future research is suggested to explore how community mapping can become an institutionalized practice to fill in important gaps in data-scarce environments.</p>

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Three Points Approach (3PA) for urban flood risk management: A tool to support climate change adaptation through transdisciplinarity and multifunctionality

Urban Water Journal ◽

10.1080/1573062x.2012.668913 ◽

2012 ◽

Vol 9 (5) ◽

pp. 317-331 ◽

Cited By ~ 63

Author(s):

C.F. Fratini ◽

G.D. Geldof ◽

J. Kluck ◽

P.S. Mikkelsen

Keyword(s):

Climate Change ◽

Risk Management ◽

Climate Change Adaptation ◽

Flood Risk ◽

Flood Risk Management ◽

Urban Flood ◽

Urban Flood Risk

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Special Issue on Actions Toward Futuristic Urban Flood Risk Research and Management

Journal of Disaster Research ◽

10.20965/jdr.2021.p0309 ◽

2021 ◽

Vol 16 (3) ◽

pp. 309-309

Author(s):

Yoshihiro Shibuo ◽

Kenji Kawaike ◽

Hiroaki Furumai

Keyword(s):

Climate Change ◽

Risk Management ◽

Flood Risk ◽

Flood Risk Management ◽

Special Issue ◽

Private Companies ◽

Urban Flood ◽

Pluvial Flooding ◽

The Impact ◽

Urban Flood Risk

As rainfalls exceeding the designed level have increased, so has damage associated with pluvial flooding. Typhoon Hagibis, which swept Japan in 2019, left 140 municipalities in 15 prefectures scarred from flooding. The sewage networks damaged by the typhoon affected civic life by paralyzing urban functions, raising concerns in urban flood risk and management. Increases in heavy rainfall events associated with global climate change are expected to increase damage from pluvial flooding, thereby necessitating reviews of current urban flood risk management for the purpose of making further improvements against future threats. As we enter an era of frequent urban flooding, it is vitally important that we prepare for urban flood risk management by sharing scientific and technological knowledge among academics, private companies, and administrators. In this context, the current issue is a compilation of contemporary research studies in academia, technological advances in private companies, and practical applications in public administrations in Japan. The works include: the application of urban flood modeling in safe evacuation strategies, the assessment of economic loss, and the impact of climate change; state of the art technologies for urban flood management with the Internet of Things (IoT) and Internet Communication Technology (ICT), Unmanned Aerial Vehicles (UAV), and the next generation of weather radars; and best practices for flood countermeasures, based on knowledge and experience from historical flooding and applied in prefectural governments and local municipalities. We are grateful to all the authors and reviewers who contributed to this special issue, and we hope that it may internationally enhance knowledge-exchange in preparation for growing urban flood risks.

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