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Case Study: Flood Mitigation of the Muda River, Malaysia |
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| Authors: | P Y Julien A Ab Ghani N A Zakaria R Abdullah C K Chang |
| Affiliation: | 1Professor, and Associate Dean, College of Engineering, Engineering Research Center, Colorado State Univ., Fort Collins, CO 80523 (corresponding author). E-mail: pierre@engr.colostate.edu 2Professor, Deputy Director, River Engineering and Urban Drainage Research Centre (REDAC), Univ. Sains Malaysia, Engineering Campus, Seri Ampangan, Nibong Tebal, 14300 Penang, Malaysia. E-mail: redac02@eng.usm.my 3Professor, Director, REDAC, Univ. Sains Malaysia, Engineering Campus, Seri Ampangan, Nibong Tebal, 14300 Penang, Malaysia. E-mail: redac01@eng.usm.my 4Lecturer, School of Civil Engineering, Univ. Sains Malaysia, Engineering Campus, Seri Ampangan, Nibong Tebal, 14300 Penang, Malaysia. E-mail: cerozi@eng.usm.my 5Science Officer, REDAC, Univ. Sains Malaysia, Engineering Campus, Seri Ampangan, Nibong Tebal, 14300 Penang, Malaysia. E-mail: redac10@eng.usm.my |
| Abstract: | The 2003 flood of the Muda River reached 1,340?m3/s at Ladang Victoria and adversely impacted 45,000 people in Malaysia. A flood control remediation plan proposed a levee height based on a 50-year discharge of 1,815?m3/s obtained from hydrologic models. This design discharge falls outside the 95% confidence intervals of the flood frequency analysis based on field measurements. Instream sand and gravel mining operations also caused excessive riverbed degradation, which largely off sets apparent benefits for flood control. Pumping stations have been systematically required at irrigation canal intakes. Several bridge piers have also been severely undermined and emergency abutment protection works were needed in several places. Instream sand and gravel mining activities should be replaced with offstream mining in the future. |
| Keywords: | Floods Hydrologic models Hydraulic engineering Gravel Mining Malaysia |