scholarly journals Adaption to Extreme Rainfall with Open Urban Drainage System: An Integrated Hydrological Cost-Benefit Analysis

2013 ◽  
Vol 51 (3) ◽  
pp. 586-601 ◽  
Author(s):  
Qianqian Zhou ◽  
Toke Emil Panduro ◽  
Bo Jellesmark Thorsen ◽  
Karsten Arnbjerg-Nielsen
Keyword(s):  
Cost Benefit Analysis ◽  
Drainage System ◽  
Cost Benefit ◽  
Extreme Rainfall ◽  
Urban Drainage ◽  
Benefit Analysis ◽  
Urban Drainage System

scholarly journals Integrated framework for assessing climate change impact on extreme rainfall and the urban drainage system

2019 ◽  
Vol 51 (1) ◽  
pp. 77-89 ◽  
Author(s):  
Wei Lu ◽  
Xiaosheng Qin
Keyword(s):  
Climate Change ◽  
Climate Change Impact ◽  
Drainage System ◽  
Extreme Rainfall ◽  
Urban Drainage ◽  
Stochastic Weather Generator ◽  
Urban Drainage System ◽  
Integrated Framework ◽  
Change Impact ◽  
The Impact

Abstract Urban areas are becoming increasingly vulnerable to extreme storms and flash floods, which could be more damaging under climate change. This study presented an integrated framework for assessing climate change impact on extreme rainfall and urban drainage systems by incorporating a number of statistical and modelling techniques. Starting from synthetic future climate data generated by the stochastic weather generator, the simple scaling method and the Huff rainfall design were adopted for rainfall disaggregation and rainfall design. After having obtained 3-min level designed rainfall information, the urban hydrological model (i.e., Storm Water Management Model) was used to carry out the runoff analysis. A case study in a tropical city was used to demonstrate the proposed framework. Particularly, the impact of selecting different general circulation models and Huff distributions on future 1-h extreme rainfall and the performance of the urban drainage system were investigated. It was revealed that the proposed framework is flexible and easy to implement in generating temporally high-resolution rainfall data under climate model projections and offers a parsimonious way of assessing urban flood risks considering the uncertainty arising from climate change model projections, downscaling and rainfall design.

scholarly journals Uncertainty Analysis in the Evaluation of Extreme Rainfall Trends and Its Implications on Urban Drainage System Design

Water ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 6931-6945 ◽  
Author(s):  
Vincenza Notaro ◽  
Lorena Liuzzo ◽  
Gabriele Freni ◽  
Goffredo La Loggia
Keyword(s):  
Uncertainty Analysis ◽  
System Design ◽  
Drainage System ◽  
Extreme Rainfall ◽  
Urban Drainage ◽  
Urban Drainage System ◽  
Rainfall Trends

Monitoring the future behaviour of urban drainage system under climate change: a case study from north-western England

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Yassin Z. Osman
Keyword(s):  
Climate Change ◽  
Climate Model ◽  
Global Climate ◽  
Global Climate Model ◽  
Drainage System ◽  
Extreme Rainfall ◽  
Urban Drainage ◽  
Urban Drainage System ◽  
Monitoring The Future ◽  
Greenhouse Emission

AbstractCatchments hydrological conditions and responses are anticipated to be affected by the changes in weather patterns, increasing in climate variability and extreme rainfall. Thus, engineers have no choice but to consider climate change in their practices in order to adapt and serve the public interests. This paper is an exploration of the impacts of climate change on the hydrology that underlies the hydraulic design of urban drainage system. Future rainfall has been downscaled from the Global Climate Model (GCM) employing a hybrid Generalised Linear Model (GLM) and Artificial Neural Network (ANN) downscaling techniques under different greenhouse emission scenarios. The output from this model is applied to a combined sewer system of an urban drainage catchment in the Northwest of England during the 21st Century to monitor its future behaviour in winter and summer seasons. Potential future changes in rainfall intensity are expected to alter the level of service of the system, causing more challenges in terms of surface flooding and increase in surcharge level in sewers. The results obtained demonstrate that there is a real chance for these effects to take place and therefore would require more attention from designers and catchment managers.

scholarly journals A cost-benefit analysis model for the retrofit of sustainable urban drainage systems towards improved flood risk mitigation

2019 ◽  
Vol 38 (3) ◽  
pp. 423-439
Author(s):  
Oluwayemi A. Oladunjoye ◽  
David G. Proverbs ◽  
Beck Collins ◽  
Hong Xiao
Keyword(s):  
Flood Risk ◽  
Cost Benefit Analysis ◽  
Risk Mitigation ◽  
Cost Benefit ◽  
Flood Risk Management ◽  
Urban Drainage ◽  
Benefit Analysis ◽  
Analysis Model ◽  
Content Type ◽  
The Uk

Purpose The Environment Agency estimates that one in six homes in England (approximately 5.2m properties) are at risk from flooding and 185,000 commercial properties are located in flood-prone areas. Further, an estimate of 10,000 new homes are built on flood plains yearly. The UK has witnessed a significant increase in flood events over the past 10 years. During this period, there has been growing research attention into measures to mitigate the effects of flooding, including the benefits of deploying sustainable urban drainage systems (SuDs) in new developments or as a retrofit. The purpose of this paper is to present the development of a cost-benefit analysis model for the retrofit of SuDs focusing on the potential for improved flood risk mitigation in the context of commercial properties. Design/methodology/approach A synthesis of flood risk management and SuDs literature is used to inform the development of a conceptual cost-benefit analysis model for the retrofit of SuDs and focusing on the potential for improved flood risk mitigation in the context of commercial properties. Findings SuDs have been applied successfully in different parts of the world; however, the uptake of SuDs, in particular, the retrofit of SuDs, has been restricted by a number of issues including a lack of experience and trust in their performance and a lack of understanding in their true benefits. In particular, there is the limited experience of retrofitting SuDs and there are no well-established procedures for evaluating the feasibility, value or cost effectiveness of doing this. Social implications This offers the potential to support the UK government’s flood risk management policy by helping to increase the resilience of properties, whilst offering other benefits to communities such as improvements in air quality and biodiversity and also presenting a clearer understanding of the monetary and non-monetary implication to owners of commercial properties for a more informed and acceptable uptake of SuDs retrofit. Originality/value The proposed model will allow a more comprehensive understanding of the costs and associated benefits associated with SuDs retrofit, highlighting the flood risk mitigation benefits that might accrue over a period of time for commercial property.

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