urban drainage Articles

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  • Keyword: urban drainage ×

Characterization of the hydraulic performance of a gully under drainage conditions

by IWA Publishing  (Jun. 25, 2014)

During rainfall events with low return periods (1–20 years) the drainage system can provide some degree of protection to urban areas. The system design is based not only on good hydraulic performance of the surface and the sewer network but also on their linking elements. Although the linking elements are of utmost importance as they allow ...

An integrated cellular automata evolutionary-based approach for evaluating future scenarios and the expansion of urban drainage networks

by IWA Publishing  (Mar. 26, 2014)

The paper describes and demonstrates an integrated cellular automata evolutionary-based approach for evaluating future scenarios including the expansion of urban drainage networks. The approach can be used to derive a drainage network layout based on future land use scenarios. Two techniques are used to derive the layout of the system: one using ...

Urban drainage models – simplifying uncertainty analysis for practitioners

by IWA Publishing  (Nov. 29, 2013)

There is increasing awareness about uncertainties in the modelling of urban drainage systems and, as such, many new methods for uncertainty analyses have been developed. Despite this, all available methods have limitations which restrict their widespread application among practitioners. Here, a modified Monte-Carlo based method is presented that ...

Assessing the potential of using telecommunication microwave links in urban drainage modelling

by IWA Publishing  (Nov. 1, 2013)

The ability to predict the runoff response of an urban catchment to rainfall is crucial for managing drainage systems effectively and controlling discharges from urban areas. In this paper we assess the potential of commercial microwave links (MWL) to capture the spatio-temporal rainfall dynamics and thus improve urban rainfall-runoff modelling. ...

How to Plan Stormwater Management for Urban Areas

by Liquivault  (Jan. 23, 2014)

Water is a vital commodity in our lives, but it is possible to have too much water all at once in our lives, especially following violent storms or snow melt. This excess water, lying on the ground, swelling rivers, canals and drains to over-capacity is known as stormwater. In order to make the best use of this water, local authorities need to ...

A spatial-temporal rainfall generator for urban drainage design

by IWA Publishing  (Jul. 4, 2013)

The work presented here is a contribution to the Thames Water project of improving the Counters Creek catchment sewerage system in London. An increase in the number of floods affecting basements in the area has indicated the need for improvements to the system. The cost of such improvements could be very high, and as such it is important to ...

Local effects of global climate change on the urban drainage system of Hamburg

by IWA Publishing  (Sep. 16, 2013)

The Hamburg Water Group owns and operates a sewer network with a total length of more than 5,700 km. There has been increasing attention paid to the possible impacts of predicted changes in precipitation patterns on the sewer network infrastructure. The primary objective of the work presented in this paper is an estimation of the hydraulic ...

Cluster analysis for characterization of rainfalls and CSO behaviours in an urban drainage area of Tokyo

by IWA Publishing  (Aug. 8, 2013)

Combined sewer overflow (CSO) from urban areas is recognized as a major pollutant source to the receiving waters during wet weather. This study attempts to categorize rainfall events and corresponding CSO behaviours to reveal the relationship between rainfall patterns and CSO behaviours in the Shingashi urban drainage areas of Tokyo, Japan where ...

Comparison between InfoWorks hydraulic results and a physical model of an urban drainage system

by IWA Publishing  (Jul. 19, 2013)

Urban drainage systems are frequently analysed using hydraulic modelling software packages such as InfoWorks CS or MIKE-Urban. The use of such modelling tools allows the evaluation of sewer capacity and the likelihood and impact of pluvial flood events. Models can also be used to plan major investments such as increasing storage capacity or the ...

Comparison of short-term rainfall forecasts for model-based flow prediction in urban drainage systems

by IWA Publishing  (Jul. 19, 2013)

Forecast-based flow prediction in drainage systems can be used to implement real-time control of drainage systems. This study compares two different types of rainfall forecast – a radar rainfall extrapolation-based nowcast model and a numerical weather prediction model. The models are applied as input to an urban runoff model predicting ...

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