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Water 2017, 9(3), 173; doi:10.3390/w9030173

Effective Design and Planning Specification of Low Impact Development Practices Using Water Management Analysis Module (WMAM): Case of Malaysia

Faculty of Water Resource Management, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
Faculty of Civil Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru 81310, Malaysia
Department of Civil Engineering, Seoul National University of Science and Technology, Seoul 139-743, Korea
Author to whom correspondence should be addressed.
Academic Editor: Marco Franchini
Received: 14 December 2016 / Revised: 14 February 2017 / Accepted: 25 February 2017 / Published: 28 February 2017
View Full-Text   |   Download PDF [1865 KB, uploaded 28 February 2017]   |  


Developers are increasingly looking for the best management practices to reduce the risk of floods in rapidly growing urban areas. Low impact development (LID) is regarded as one of the most suitable solutions for urban stormwater management and thus the U.S. EPA’s (Environmental Protection Agency) SWMM5.1 (Storm Water Management Model) added the hydrological simulation function for LID structures in 2009. However, SWMM5.1 cannot consider the optimal or best physical specifications of LID design and planning fitted to a study area, nor can it instantly derive the best combination for multiple LID designs and plans. Therefore, in this study, a web-based decision support system (DSS) for the EPA’s SWMM 5.1, referred to as the Water Management Analysis Module (WMAM) is used to decide the most effective specifications of design and planning parameters for LID structure. This study was carried out over an urban catchment of University Technology Malaysia campus located in Johor, Malaysia. The hydrologic cycles with and without LID were simulated using EPA SWMM5.1. The sensitivity analysis and multiple scenario analysis were performed using WMAM. As a result, the effective specification of LID design parameters indicates that peak flow is reduced to 20.95% and 17.5% for two sub-catchments, S1 (highest by area) and S6 (lowest by area) by installing an LID structure. Thus, this study provides a tool for the best solution for what values for physical parameters will be the best for a specified LID type and what capacities can achieve the particular objectives using WMAM. View Full-Text
Keywords: low impact development; Malaysia; SWMM; Water Management Analysis Module (WMAM) low impact development; Malaysia; SWMM; Water Management Analysis Module (WMAM)

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Ahmed, K.; Chung, E.-S.; Song, J.-Y.; Shahid, S. Effective Design and Planning Specification of Low Impact Development Practices Using Water Management Analysis Module (WMAM): Case of Malaysia. Water 2017, 9, 173.

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