urban drainage Articles

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Questions and answers about Lake Erie toxic algae

by Associated Press  (Aug. 4, 2014)

Hundreds of thousands of people in Toledo, Ohio, and nearby southeastern Michigan were unable to use tap water fromSaturday until Monday morning because of unsafe levels of a contaminant called microcystin in Lake Erie. Here are questions and answers about the situation: Q. What is microcystin? A. A toxin produced by microcystis, a type of ...

Application of the urban water use model for urban water use management purposes

by IWA Publishing  (Aug. 7, 2014)

The aim of this work is to present an application of the urban water use (UWU) model, which is a support decision tool to define the best group of efficient water use measures for UWU management purposes. Therefore, the UWU was developed under integrated urban water management (IUWM) and strategic planning principles to promote a systemic ...

Application of the stormwater management model to a piedmont city: a case study of Jinan City, China

by IWA Publishing  (Sep. 17, 2014)

The stormwater management model (SWMM) was adapted and calibrated to Jinan, a typical piedmont city in China, to verify the large-scale applicability of the model to piedmont cities. Fourteen storms were used for model calibration and validation. The calibrated model predicted the measured data with satisfactory accuracy and reliability. A ...

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. ...

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 ...

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 ...

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 ...

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