Evaluation on flow discharge of grassed swale in lowland area

Grassed swale is an open vegetated channel designed specifically in attenuating stormwater runoff to decrease the velocity, to reduce the peak flows, and minimize the causes of flood. Therefore, the fundamental of this study is to evaluate the flow discharge of swale in Universiti Tun Hussein Onn Ma...

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Main Authors: Mustaffa, Nurhazirah, Ahmad, Noor Aliza, Mohammad Razi, Mohd Adib
Format: Article
Language:English
Published: EDP Sciences 2017
Subjects:
Online Access:http://eprints.uthm.edu.my/3455/1/AJ%202017%20%2853%29%20Evaluation%20on%20flow%20discharge%20of%20grassed%20swale%20in%20lowland%20area.pdf
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author Mustaffa, Nurhazirah
Ahmad, Noor Aliza
Mohammad Razi, Mohd Adib
author_facet Mustaffa, Nurhazirah
Ahmad, Noor Aliza
Mohammad Razi, Mohd Adib
author_sort Mustaffa, Nurhazirah
collection UTHM
description Grassed swale is an open vegetated channel designed specifically in attenuating stormwater runoff to decrease the velocity, to reduce the peak flows, and minimize the causes of flood. Therefore, the fundamental of this study is to evaluate the flow discharge of swale in Universiti Tun Hussein Onn Malaysia (UTHM), which has flat land surface area. There are two sites of study were involved to assess the performance of swale as stormwater quantity control, named as swale 1 and swale 2. Data collection was conducted on 100 meters of length for each swale. The velocity of swale was measured thrice by using a current meter according to the six-tenths depth method, after a rainfall event. The discharge of drainage area in UTHM was determined by the Rational Method (Qpeak), and the discharge of swales (Qswale) was evaluated by the Mean-Section Method. Manning’s roughness coefficient and the infiltration rate were also determined in order to describe the characteristics of swale, which contributing factors for the effectiveness of swale. The results shown that Qswale is greater than Qpeak at swale 1 and swale 2, which according to the Second Edition of MSMA, the swales are efficient as stormwater quantity control in preventing flash flood at the campus area of UTHM.
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spelling uthm.eprints-34552021-11-17T07:25:08Z http://eprints.uthm.edu.my/3455/ Evaluation on flow discharge of grassed swale in lowland area Mustaffa, Nurhazirah Ahmad, Noor Aliza Mohammad Razi, Mohd Adib TC Hydraulic engineering. Ocean engineering Grassed swale is an open vegetated channel designed specifically in attenuating stormwater runoff to decrease the velocity, to reduce the peak flows, and minimize the causes of flood. Therefore, the fundamental of this study is to evaluate the flow discharge of swale in Universiti Tun Hussein Onn Malaysia (UTHM), which has flat land surface area. There are two sites of study were involved to assess the performance of swale as stormwater quantity control, named as swale 1 and swale 2. Data collection was conducted on 100 meters of length for each swale. The velocity of swale was measured thrice by using a current meter according to the six-tenths depth method, after a rainfall event. The discharge of drainage area in UTHM was determined by the Rational Method (Qpeak), and the discharge of swales (Qswale) was evaluated by the Mean-Section Method. Manning’s roughness coefficient and the infiltration rate were also determined in order to describe the characteristics of swale, which contributing factors for the effectiveness of swale. The results shown that Qswale is greater than Qpeak at swale 1 and swale 2, which according to the Second Edition of MSMA, the swales are efficient as stormwater quantity control in preventing flash flood at the campus area of UTHM. EDP Sciences 2017 Article PeerReviewed text en http://eprints.uthm.edu.my/3455/1/AJ%202017%20%2853%29%20Evaluation%20on%20flow%20discharge%20of%20grassed%20swale%20in%20lowland%20area.pdf Mustaffa, Nurhazirah and Ahmad, Noor Aliza and Mohammad Razi, Mohd Adib (2017) Evaluation on flow discharge of grassed swale in lowland area. MATEC Web of Conferences, 103 (4017). pp. 1-8. ISSN 2261-236X https://doi.org/10.1051/matecconf/201710304017
spellingShingle TC Hydraulic engineering. Ocean engineering
Mustaffa, Nurhazirah
Ahmad, Noor Aliza
Mohammad Razi, Mohd Adib
Evaluation on flow discharge of grassed swale in lowland area
title Evaluation on flow discharge of grassed swale in lowland area
title_full Evaluation on flow discharge of grassed swale in lowland area
title_fullStr Evaluation on flow discharge of grassed swale in lowland area
title_full_unstemmed Evaluation on flow discharge of grassed swale in lowland area
title_short Evaluation on flow discharge of grassed swale in lowland area
title_sort evaluation on flow discharge of grassed swale in lowland area
topic TC Hydraulic engineering. Ocean engineering
url http://eprints.uthm.edu.my/3455/1/AJ%202017%20%2853%29%20Evaluation%20on%20flow%20discharge%20of%20grassed%20swale%20in%20lowland%20area.pdf
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