urban drainage Articles

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A dynamic urban development model designed for purposes in the field of urban water management

by IWA Publishing  (Apr. 28, 2015)

Urban drainage systems are a critical part of city infrastructure. Population growth and urban development can put severe pressure on these systems, especially due to sealing of surfaces and land use change. For a comprehensive adaptation of urban water infrastructure to constantly changing and evolving systems, a detailed simulation of the ...

Performance of a pilot showcase of different wetland systems in an urban setting in Singapore

by IWA Publishing  (Apr. 27, 2015)

The Alexandra Wetlands, part of PUB's Active, Beautiful, Clean Waters (ABC Waters) Programme, showcase a surface flow wetland, an aquatic pond and a sub-surface flow wetland on a 200 m deck built over an urban drainage canal. Water from the canal is pumped to a sedimentation basin, before flowing in parallel to the three wetlands. Water ...

Analysis of effects of climate change on runoff in an urban drainage system: a case study from Seoul, Korea

by IWA Publishing  (Mar. 16, 2015)

Both water quantity and quality are impacted by climate change. In addition, rapid urbanization has also brought an immeasurable loss of life and property resulting from floods. Hence, there is a need to predict changes in rainfall events to effectively design stormwater infrastructure to protect urban areas from disaster. This study develops a ...

Integrated hydraulic modelling of water supply and urban drainage networks for assessment of decentralized options

by IWA Publishing  (Dec. 15, 2014)

The impact of climate change, water scarcity, land use change, population growth and also population shrinking can only be predicted with uncertainties. Especially for assets with a long planning horizon this is a critical part for planning and design. One solution is to make centralized organized water infrastructure with a long-planning ...

Multi-objective rehabilitation of urban drainage systems under uncertainties

by IWA Publishing  (Sep. 25, 2014)

Urban drainage systems are subject to many drivers which can affect their performance and functioning. Typically, climate change, urbanisation and population growth along with aging of pipes may lead to uncontrollable discharges and surface flooding. So far, many researchers and practitioners concerned with optimal design and rehabilitation of ...

Urban-Water Harmony model to evaluate the urban water management

by IWA Publishing  (Dec. 15, 2014)

Water resources in many urban areas are under enormous stress due to large-scale urban expansion and population explosion. The decision-makers are often faced with the dilemma of either maintaining high economic growth or protecting water resources and the environment. Simple criteria of water supply and drainage do not reflect the requirement ...

Simplifying impact of urban development on sewer systems

by IWA Publishing  (Dec. 15, 2014)

Linking urban development and urban drainage models is a more and more popular approach when impacts of pavement of urban areas on sewer system performance are evaluated. As such an approach is a difficult task, this is not a feasible procedure for everyday engineering practice. We propose an alternative method, based on a developed simple ...

Predicting infiltration pollutant retention in bioretention sustainable drainage systems: model development and validation

by IWA Publishing  (Dec. 22, 2014)

A major problem of increased urbanization is the rise in pollution caused by runoff. A solution to this problem can be found through the use of Sustainable Urban Drainage Systems (SUDS) such as rain gardens. Previous research has focused primarily on hydrologic design including the degree to which groundwater is replenished by these systems and ...

Green infrastructure for flood-risk management in Dar es Salaam and Copenhagen: exploring the potential for transitions towards sustainable urban water management

by IWA Publishing  (Feb. 6, 2015)

The risk of flooding in urban areas could be better approached by complementing conventional sewer systems with sustainable urban drainage systems (SUDS) for storm-water management. This may be the case for developing world cities like Dar es Salaam with incomplete sewer services, as well as cities like Copenhagen with fully developed sewer ...

Use of geological mapping tools to improve the hydraulic performance of SuDS

by IWA Publishing  (May 18, 2015)

Most cities in Denmark are situated on low permeable clay rich deposits. These sediments are of glacial origin and range among the most heterogeneous, with hydraulic conductivities spanning several orders of magnitude. This heterogeneity has obvious consequences for the sizing of sustainable urban drainage systems (SuDS). We have tested methods ...

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