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Conference Paper: Rapid assessment of hydrologic performance of low impact development practices at different implementation levels
Title | Rapid assessment of hydrologic performance of low impact development practices at different implementation levels |
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Authors | |
Keywords | Low impact development Sustainable drainage system Performance assessment SWMM Stormwater management |
Issue Date | 2017 |
Publisher | International Association for Hydro-Environment Engineering and Research |
Citation | 37th International Association for Hydro-Environment Engineering and Research (IAHR) World Congress, Kuala Lumpur, Malaysia, 13-18 August 2017, Paper 2016-05-24-0784 How to Cite? |
Abstract | In recent years, low impact development (LID) practices have been widely used to manage stormwater and to restore natural hydrologic regimes. During preliminary design, it is often necessary to identify the required LID practice area that can meet the control target of peak flow and runoff volume. Currently, equation-based methods (e.g. the Rational and the Curve Number method) and hydrological models are often used. However, the coefficients required by the equation-based methods are often site-specific and inaccurate. On the other hand, the hydrological models may not provide direct and intuitive results due to model complexity. This study employed EPA SWMM, a dynamic hydrologic/hydraulic model, to investigate the surface peak flow and surface runoff volume reductions of various LID implementation levels. A MATLAB code was developed to automate the processes of input file modification, model execution, result extraction and post-processing. A few commonly used LID practices, e.g. porous pavement and bioretention cells, were examined. The results were summarized as performance curves which can be used to quickly assess the hydrologic performance of the preliminary designs. Furthermore, a few equations based on the concept of water balance were proposed, which can be used to quickly estimate the required LID practice area using hand calculations. Finally, sensitivity analysis was performed on design storm characteristics, catchment hydrological properties and LID design configurations, etc. |
Description | Theme 5: Urban Water Management: 5D: Stormwater Management - Technical Session 12J: Paper 2016-05-24-0784 |
Persistent Identifier | http://hdl.handle.net/10722/245774 |
DC Field | Value | Language |
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dc.contributor.author | Yang, Y | - |
dc.contributor.author | Chui, TFM | - |
dc.date.accessioned | 2017-09-18T02:16:38Z | - |
dc.date.available | 2017-09-18T02:16:38Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | 37th International Association for Hydro-Environment Engineering and Research (IAHR) World Congress, Kuala Lumpur, Malaysia, 13-18 August 2017, Paper 2016-05-24-0784 | - |
dc.identifier.uri | http://hdl.handle.net/10722/245774 | - |
dc.description | Theme 5: Urban Water Management: 5D: Stormwater Management - Technical Session 12J: Paper 2016-05-24-0784 | - |
dc.description.abstract | In recent years, low impact development (LID) practices have been widely used to manage stormwater and to restore natural hydrologic regimes. During preliminary design, it is often necessary to identify the required LID practice area that can meet the control target of peak flow and runoff volume. Currently, equation-based methods (e.g. the Rational and the Curve Number method) and hydrological models are often used. However, the coefficients required by the equation-based methods are often site-specific and inaccurate. On the other hand, the hydrological models may not provide direct and intuitive results due to model complexity. This study employed EPA SWMM, a dynamic hydrologic/hydraulic model, to investigate the surface peak flow and surface runoff volume reductions of various LID implementation levels. A MATLAB code was developed to automate the processes of input file modification, model execution, result extraction and post-processing. A few commonly used LID practices, e.g. porous pavement and bioretention cells, were examined. The results were summarized as performance curves which can be used to quickly assess the hydrologic performance of the preliminary designs. Furthermore, a few equations based on the concept of water balance were proposed, which can be used to quickly estimate the required LID practice area using hand calculations. Finally, sensitivity analysis was performed on design storm characteristics, catchment hydrological properties and LID design configurations, etc. | - |
dc.language | eng | - |
dc.publisher | International Association for Hydro-Environment Engineering and Research | - |
dc.relation.ispartof | 37th International Association for Hydro-Environment Engineering and Research (IAHR) World Congress | - |
dc.subject | Low impact development | - |
dc.subject | Sustainable drainage system | - |
dc.subject | Performance assessment | - |
dc.subject | SWMM | - |
dc.subject | Stormwater management | - |
dc.title | Rapid assessment of hydrologic performance of low impact development practices at different implementation levels | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Chui, TFM: maychui@hku.hk | - |
dc.identifier.authority | Chui, TFM=rp01696 | - |
dc.identifier.hkuros | 276408 | - |