An approximation method for evaluating flash flooding mitigation of sponge city strategies – A case study of Central Geelong

Li, Yan; Li, Hong Xian; Huang, Jiaxin; Liu, Chunlu

doi:10.1016/j.jclepro.2020.120525

Cited by 31 publications

(16 citation statements)

References 33 publications

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“…The flooding risks are associated with standing water depths calculated according to the site topography and the flood volumes of each node. Our results reveal that flooding risks under Scenario 2 were much lower than Scenario 1, which indicates that the sponge facilities have a better and effective flood control capacity to manage rainwater [38].…”

Section: Flooding Control Assessmentmentioning

confidence: 81%

Assessment on the Effectiveness of Urban Stormwater Management

Zhang

Zhao²,

Chen

et al. 2020

Water

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Stormwater management is a key issue in line with global problems of urbanization and climate change. Assessing the effectiveness in managing stormwater is crucial to maintain urban resilience to flooding risk. A method based on a stormwater management model (SWMM) was developed for assessing the control of stormwater runoff volume and the percentage removal of suspended solids by implementing a Sponge City strategy. An interdisciplinary approach was adopted incorporating Low Impact Development (LID) with urban green infrastructure and grey infrastructure paradigms in a typical old residential community in Suzhou, China. Sponge facilities for reducing stormwater runoff included bio-retention cells, permeable pavements, grassed pitches, and stormwater gardens. The simulation results of SWMM show that the stormwater pipe system can meet the management standard for storms with a five-year recurrence interval. The volume capture ratio of annual runoff was 91%, which is higher than control target of 80%. The suspended solids reduction rate was 56%, which meets the requirement of planning indicators. Thus, the proposed method of spongy facilities can be used for renovation planning in old residential areas in China. Implementing spongy facilities with a LID strategy for stormwater management can significantly enhance urban water resilience and improve ecosystem services.

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Section: Flooding Control Assessmentmentioning

confidence: 81%

Assessment on the Effectiveness of Urban Stormwater Management

Zhang

Zhao²,

Chen

et al. 2020

Water

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“…It is a comprehensive conceptual strategy that embraces an interconnected system of waterways, urban forestry, green streets and alleys, constructed wetlands, green roofs, woodlands, parks, or artificially constructed green spaces to protect ecosystems, retain urban runoff, manage floods and coastal storm surges and improve community health (Ibrahim, Bartsch, & Sharifi, 2020;Mulligan et al, 2020). GI benefits the environment by improving air and water quality (Nowak, Crane, & Stevens, 2006), carbon sequestration, reducing the urban heat island effect (Odefey, Detwiler, Rousseau, & Trice, 2012), and restoring natural hydrology (Li, Li, Huang, & Liu, 2020). GI, as a sustainable accompaniment has been rapidly adopted over several other technologies because it primarily benefits the environment by eliminating the need for traditional gray infrastructure and simultaneously provides a multitude of environmental and social benefits (Li et al, 2020;Tzoulas et al, 2007).…”

Section: Gi Technologies For the Management Of Stormwatermentioning

confidence: 99%

“…GI benefits the environment by improving air and water quality (Nowak, Crane, & Stevens, 2006), carbon sequestration, reducing the urban heat island effect (Odefey, Detwiler, Rousseau, & Trice, 2012), and restoring natural hydrology (Li, Li, Huang, & Liu, 2020). GI, as a sustainable accompaniment has been rapidly adopted over several other technologies because it primarily benefits the environment by eliminating the need for traditional gray infrastructure and simultaneously provides a multitude of environmental and social benefits (Li et al, 2020;Tzoulas et al, 2007). GI also aims at achieving environmental or sustainability goals and contributes to the escalation of climate change resilience, reduction in capital cost savings and energy demand, increase in urban biodiversity, additional space for wildlife, and higher land-values of up to 30% (Tran, Helmus, & Behm, 2020).…”

Section: Gi Technologies For the Management Of Stormwatermentioning

confidence: 99%

Management of stormwater pollution using green infrastructure: The role of rain gardens

Sharma

Malaviya

2021

WIREs Water

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Major modifications are needed in existing stormwater management practices to control floods in urban landscapes, protect natural ecosystems, and minimize infrastructural destruction due to stormwater hazards. Stormwater management combined with urban design can be the best solution to minimize urban flooding risks and promote a clean natural environment. Green infrastructure (GI) is an environmentally sustainable alternative to traditional methods of stormwater management. Rain gardens, a GI, play a vital role in reducing rainwater volume and flow, prevent asset's destruction, remove pollutants from urban runoff, and recharge groundwater. Rain gardens can remove sediments, heavy metals, pathogens, nutrients, hydrocarbons from stormwater via several mechanisms. Various amendments in soil media help in delayed saturation, low sorption capacity, limited pollutant mobility, and bioaccumulation/biotransformation of metals/organic compounds in rain gardens. Soil media and plants play a vital role in the pollutant removal processes of rain gardens. Various plant‐based mechanisms and chemical processes like adsorption, reduction, sedimentation, cation‐exchange capacity, complexation, and so forth are involved in the removal of contaminants from stormwater. Construction and design considerations; different models of rain gardens; working mechanisms; performance assessment tools like capacity tests and synthetic runoff tests; removal of stormwater pollutants, and biphasic rain gardens have been critically discussed in this review. The state‐of‐the‐art review approaches to provide fundamental knowledge of rain gardens and in‐depth analyzes its potential as a stormwater management tool. Future directions on improving efficiencies of rain gardens have also been discussed for prospective researchers. This article is categorized under: Engineering Water

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“…Through VLRG, the above-mentioned situations can be greatly alleviated. Green infrastructure, such as rain gardens, bio-swales, and bio-retention areas, converted from vacant lands, can act as a sponge to soak up stormwater runoff and capture water for reuse, reducing peak runoff volumes and waterlogging (Li, Li, Huang, & Liu, 2020). Because green infrastructure mimics the natural processes of purifying stormwater, pollutants can be absorbed through natural ecological processe, and bacteria can be destroyed by ultraviolet rays from sunlight.…”

Section: Health Benefits From Reduced Urban Runoff Contamination Levelsmentioning

confidence: 99%

The projected impacts of smart decline on urban runoff contamination levels

Zhu

Newman

2021

Comput.Urban Sci.

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There has been mounting interest about how the repurposing of vacant land (VL) through green infrastructure (the most common smart decline strategy) can reduce stormwater runoff and improve runoff quality, especially in legacy cities characterized by excessive industrial land uses and VL amounts. This research examines the long-term impacts of smart decline on both stormwater amounts and pollutants loads through integrating land use prediction models with green infrastructure performance models. Using the City of St. Louis, Missouri, USA as the study area, we simulate 2025 land use change using the Conversion of Land Use and its Effects (CLUE-S) and Markov Chain urban land use prediction models and assess these change’s probable impacts on urban contamination levels under different smart decline scenarios using the Long-Term Hydrologic Impact Assessment (L-THIA) performance model. The four different scenarios are: (1) a baseline scenario, (2) a 10% vacant land re-greening (VLRG) scenario, (3) a 20% VLRG scenario, and (4) a 30% VLRG scenario. The results of this study illustrate that smart decline VLRG strategies can have both direct and indirect impacts on urban stormwater runoff and their inherent contamination levels. Direct impacts on urban contamination include the reduction of stormwater runoff and non-point source (NPS) pollutants. In the 30% VLRG scenario, the annual runoff volume decreases by 11%, both physical, chemical, and bacterial pollutants are reduced by an average of 19%, compared to the baseline scenario. Indirect impacts include reduction of the possibility of illegal dumping on VL through mitigation and prevention of future vacancies.

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An approximation method for evaluating flash flooding mitigation of sponge city strategies – A case study of Central Geelong

Cited by 31 publications

References 33 publications

Assessment on the Effectiveness of Urban Stormwater Management

Assessment on the Effectiveness of Urban Stormwater Management

Management of stormwater pollution using green infrastructure: The role of rain gardens

The projected impacts of smart decline on urban runoff contamination levels

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