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

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 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

Integrated assessment of urban drainage system under the framework of uncertainty analysis

2008 ◽  
Vol 57 (8) ◽  
pp. 1227-1234 ◽  
Author(s):  
X. Dong ◽  
J. Chen ◽  
S. Zeng ◽  
D. Zhao
Keyword(s):  
Uncertainty Analysis ◽  
Integrated Assessment ◽  
Drainage System ◽  
Ecological Impacts ◽  
Urban Drainage ◽  
Analytic Hierarchy ◽  
Rapid Urbanization ◽  
Urban Drainage System ◽  
Fuzzy Assessment ◽  
Integrated Performance

Due to a rapid urbanization as well as the presence of large number of aging urban infrastructures in China, the urban drainage system is facing a dual pressure of construction and renovation nationwide. This leads to the need for an integrated assessment when an urban drainage system is under planning or re-design. In this paper, an integrated assessment methodology is proposed based upon the approaches of analytic hierarchy process (AHP), uncertainty analysis, mathematical simulation of urban drainage system and fuzzy assessment. To illustrate this methodology, a case study in Shenzhen City of south China has been implemented to evaluate and compare two different urban drainage system renovation plans, i.e., the distributed plan and the centralized plan. By comparing their water quality impacts, ecological impacts, technological feasibility and economic costs, the integrated performance of the distributed plan is found to be both better and robust. The proposed methodology is also found to be both effective and practical.

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 Study on Copula-based Coordination of Urban Drainage system and Sewage system Design

2021 ◽  
Vol 233 ◽  
pp. 03038
Author(s):  
Zhong Yixuan ◽  
Liao Xiaolong ◽  
Yi Ling ◽  
Wu Leping
Keyword(s):  
System Design ◽  
Return Period ◽  
Drainage System ◽  
Urban Drainage ◽  
Urban Drainage System ◽  
Practical Solution ◽  
Sewage System ◽  
Water Logging

The urban drainage system is co-regulated by various governmental departments, who adopt different standards in designing the system, an attempt not conducive to the prevention of water logging. This study took Zhongshan and Zhuhai as the subjects, proposed the Copula-based design of a drainage system, and calculated the most practical solution to drainage, waterlogging and rainfall based on Kendall’s Return Period, providing references for construction of such projects.

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