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Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

School of Architecture, Southeast University, Nanjing 210096, China
College of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China
Biophilic lab, Z+T Studio, Shanghai 200052, China
Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
Faculty of Built Environment, University of New South Wales, Sydney, NSW 2052, Australia
School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore
Authors to whom correspondence should be addressed.
Water 2019, 11(5), 997;
Received: 31 March 2019 / Revised: 24 April 2019 / Accepted: 9 May 2019 / Published: 13 May 2019
(This article belongs to the Special Issue Urban Rainfall Analysis and Flood Management)
PDF [3059 KB, uploaded 13 May 2019]


An investigation into the effectiveness of bioretention cells (BCs) under potential climatic changes was conducted using representative concentration pathways. A case study of Guangzhou showed changes in peak runoff in climate change scenarios, with obvious growth in RCP8.5 and slight growth in RCP2.6. The performance of BCs on multiple parameters, including reduction of runoff volume, peak runoff, and first flush, were examined in different design storms using a hydrology model (SWMM). The effectiveness of BCs varied non-linearly with scale. Their performance fell by varying amounts in the various scenarios. BCs could provide sufficient effects in response to short-return-period and short-duration storms, but the performance of BCs decreased with heavy storms, especially considering climate change. Hence, BCs cannot replace grey infrastructure but should be integrated with them. The method developed in this study could be useful in the planning and design of low impact development in view of future climate changes. View Full-Text
Keywords: bioretention; stormwater; climate change; scenario; low impact development; SWMM bioretention; stormwater; climate change; scenario; low impact development; SWMM

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Wang, M.; Zhang, D.; Lou, S.; Hou, Q.; Liu, Y.; Cheng, Y.; Qi, J.; Tan, S.K. Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes. Water 2019, 11, 997.

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