Effectiveness of tidal control gates in flood-prone areas during high tide appearances
Managing floods in low-lying coastal plains are challenging because of the complexity of the underlying physical processes and the combination of factors such as high tides and, severe storm events. In Malaysia, there were concerns from local people about the construction of a tidal control gate tha...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.919704/full |
| _version_ | 1811306556937994240 |
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| author | Mohd Nazri Yasmin Mohd Nazri Yasmin Siti Fatin Mohd Razali Suraya Sharil Wan Hanna Melini Wan Mohtar Khairul Adzim Saadon |
| author_facet | Mohd Nazri Yasmin Mohd Nazri Yasmin Siti Fatin Mohd Razali Suraya Sharil Wan Hanna Melini Wan Mohtar Khairul Adzim Saadon |
| author_sort | Mohd Nazri Yasmin |
| collection | DOAJ |
| description | Managing floods in low-lying coastal plains are challenging because of the complexity of the underlying physical processes and the combination of factors such as high tides and, severe storm events. In Malaysia, there were concerns from local people about the construction of a tidal control gate that is believed to contribute to the causes of local flooding. The performance of tidal control gates as flood control structures was studied to determine their significance and importance. The objective of this study is to evaluate the effectiveness of tidal control gates in reducing the impact of floods during high tide with severe storm events. The methodology of the study requires the usage of the hydrodynamic model using design rainfall for three scenarios with land use changes in 2015 and 2020. Three feasible scenarios were identified and further investigated. Scenario 1: without a tidal control gate; Scenario 2: with the existing tidal control gate fully open; and Scenario 3: with the existing tidal control gate fully closed. The simulation result clearly shows that the floodplain is smaller in 2015 as compared to the land use changes in 2020 because of land use permeability. In addition, the floodplain for Scenarios 2 and 3 in 2015 and 2020 is 2%–3%, respectively, smaller than that of Scenario 1 for the 20-year average recurrence interval and 3%–8%, respectively, smaller for the 100-year average recurrence interval. The results showed the influence of heavy rainfall whereby the maximum downstream discharge increment varied from 4.06% to 4.28% during high tide. Whereas the flow level for the 100-year average recurrence interval shows an increment from 0.52% to 1.53%. If the tidal control gate is not operated properly it will cause the tidal water to flow back into the upstream areas thus exposing to an increased floodplain area ranging from 2.3% to 8.4%. Which emphasizes the importance of operational methods for tidal control gate in determining its efficiency. However, further studies should also be done on the reduction of damage value involved with the construction of tidal control gate, its value in saving lives, property and in other parts of the world having different tidal variations. |
| first_indexed | 2024-04-13T08:47:36Z |
| format | Article |
| id | doaj.art-32e19536053e44499e1addd8a2aa9de4 |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-04-13T08:47:36Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-32e19536053e44499e1addd8a2aa9de42022-12-22T02:53:37ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-11-011010.3389/fenvs.2022.919704919704Effectiveness of tidal control gates in flood-prone areas during high tide appearancesMohd Nazri Yasmin0Mohd Nazri Yasmin1Siti Fatin Mohd Razali2Suraya Sharil3Wan Hanna Melini Wan Mohtar4Khairul Adzim Saadon5Department of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, MalaysiaDepartment of Irrigation and Drainage, Ministry of Environment and Water, Kuala Lumpur, MalaysiaDepartment of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, MalaysiaDepartment of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, MalaysiaDepartment of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, MalaysiaDepartment of Irrigation and Drainage, Ministry of Environment and Water, Kuala Lumpur, MalaysiaManaging floods in low-lying coastal plains are challenging because of the complexity of the underlying physical processes and the combination of factors such as high tides and, severe storm events. In Malaysia, there were concerns from local people about the construction of a tidal control gate that is believed to contribute to the causes of local flooding. The performance of tidal control gates as flood control structures was studied to determine their significance and importance. The objective of this study is to evaluate the effectiveness of tidal control gates in reducing the impact of floods during high tide with severe storm events. The methodology of the study requires the usage of the hydrodynamic model using design rainfall for three scenarios with land use changes in 2015 and 2020. Three feasible scenarios were identified and further investigated. Scenario 1: without a tidal control gate; Scenario 2: with the existing tidal control gate fully open; and Scenario 3: with the existing tidal control gate fully closed. The simulation result clearly shows that the floodplain is smaller in 2015 as compared to the land use changes in 2020 because of land use permeability. In addition, the floodplain for Scenarios 2 and 3 in 2015 and 2020 is 2%–3%, respectively, smaller than that of Scenario 1 for the 20-year average recurrence interval and 3%–8%, respectively, smaller for the 100-year average recurrence interval. The results showed the influence of heavy rainfall whereby the maximum downstream discharge increment varied from 4.06% to 4.28% during high tide. Whereas the flow level for the 100-year average recurrence interval shows an increment from 0.52% to 1.53%. If the tidal control gate is not operated properly it will cause the tidal water to flow back into the upstream areas thus exposing to an increased floodplain area ranging from 2.3% to 8.4%. Which emphasizes the importance of operational methods for tidal control gate in determining its efficiency. However, further studies should also be done on the reduction of damage value involved with the construction of tidal control gate, its value in saving lives, property and in other parts of the world having different tidal variations.https://www.frontiersin.org/articles/10.3389/fenvs.2022.919704/fullflood predictionflood-prone areabackwatertidal phenomenatidal control gatestormwater management |
| spellingShingle | Mohd Nazri Yasmin Mohd Nazri Yasmin Siti Fatin Mohd Razali Suraya Sharil Wan Hanna Melini Wan Mohtar Khairul Adzim Saadon Effectiveness of tidal control gates in flood-prone areas during high tide appearances Frontiers in Environmental Science flood prediction flood-prone area backwater tidal phenomena tidal control gate stormwater management |
| title | Effectiveness of tidal control gates in flood-prone areas during high tide appearances |
| title_full | Effectiveness of tidal control gates in flood-prone areas during high tide appearances |
| title_fullStr | Effectiveness of tidal control gates in flood-prone areas during high tide appearances |
| title_full_unstemmed | Effectiveness of tidal control gates in flood-prone areas during high tide appearances |
| title_short | Effectiveness of tidal control gates in flood-prone areas during high tide appearances |
| title_sort | effectiveness of tidal control gates in flood prone areas during high tide appearances |
| topic | flood prediction flood-prone area backwater tidal phenomena tidal control gate stormwater management |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.919704/full |
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