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DESIGN OPTION OF THE FLOOD MITIGATION PLAN OF SG. MUDA, SUNGAI MUDA, KEDAH Final Draft REPORT

DESIGN OPTION OF THE FLOOD MITIGATION PLAN OF SG. MUDA, SUNGAI MUDA, KEDAH Final Draft REPORT. (September 28, 2006). Scope of Work. (a) Rainfall data in space and time leading to chosen flood events. (b) Runoff discharge and stage records of the chosen events;

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DESIGN OPTION OF THE FLOOD MITIGATION PLAN OF SG. MUDA, SUNGAI MUDA, KEDAH Final Draft REPORT

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  1. DESIGN OPTION OF THE FLOOD MITIGATION PLANOF SG. MUDA, SUNGAI MUDA, KEDAHFinal Draft REPORT (September 28, 2006)

  2. Scope of Work (a) Rainfall data in space and time leading to chosen flood events. (b) Runoff discharge and stage records of the chosen events; (c) Computer simulation of the flood events; (d) Computer simulation of long term river behaviour to determine stretches prone to meandering, hence needing extra protection; (e) Changes in alluvial river geometry in terms of aggradation and degradation as well as lateral channel migration as a result of the flood events; (f) Design criteria used for the Flood Control Remediation Plan; (g) Specific design of the proposed structures including levee protection, riverbank protection works and protection of bridge crossings and other structures.

  3. Contents • Muda River Flood 2003 • Hydrological Modeling • Hydraulic Modeling • Sediment Sampling • River Modeling • Mitigation and Protection Works • Conclusions and Recommendations

  4. Muda Flood 2003

  5. Study Area

  6. October 1998 Flood Flood Prone Areas (Oct 1998 Flood)

  7. Summary of Rainfall Distribution for 2003 Flood

  8. Gunung Jerai 525 mm

  9. Flood Ranking Sg. Muda @ Syed Omar Sg. Muda @ Ladang Victoria

  10. Flood Frequency Analyses for Sg. Muda @ Ladang Victoria

  11. Q = 1340m3/s

  12. Hydrological Modelling

  13. Hydrological Modeling Design Flood Hydrograph of 5, 20, 50 and 100 yr ARI for Sg Muda at Ladang Victoria (JICA, 1995) Design Flood Hydrograph of 5, 20, 50 and 100 yr ARI for Sg Muda at Ladang Victoria (Zaaba, 2002)

  14. DISCHARGE STATION: Jambatan Syed Omar (5606410) Ladang Victoria (5505412) RAINFALL STATION: Bt. 27 Jln. Baling (5507076) Bt. 61 Jln. Baling (5808001) Jeniang Klinik (5806066) Komplek Rumah Muda (6108001) MODEL SET UP CALIBRATION –OCTOBER 2003 VALIDATION – NOVEMBER 1998 HEC-HMS

  15. RAINFALL & DISCHARGE STATION LOCATIONS

  16. RAINFALL GAGE WEIGHT

  17. Schematic Modelling of Sg Muda Using HEC-HMS

  18. CALIBRATION RESULTS (2003 Flood)

  19. VALIDATION RESULTS (1998 Flood)

  20. Design Peak Discharges Comparisons

  21. Comparison of Hydrograph at Ladang Victoria

  22. Hydraulic Modelling with HEC-RAS

  23. Simulated Flood Profiles for Alternative 2 under 50-year and 100-year ARI with Proposed Bund Levels along Sg. Muda

  24. Study Area

  25. Cross Section at CH 41.2

  26. HEC-RAS Modelling

  27. Cross Section Points of Sg Muda in HEC-RAS Modelling

  28. Longitudinal Flood Profile for Sg Muda (Q=1340m3/s) Bridge Railway Bridge Pipe Bridge Expressway Bridge Merdeka Bridge Muda Barrage

  29. Velocities Profile of Sg. Muda (Q=1340m3/s)

  30. Longitudinal Flood Profiles 50 ARI

  31. Flood Levels under 1 in 50 yr and 100 yr ARIs, with Proposed Bund Levels for Sg Muda

  32. Proposed Bund Levels for Sg Muda

  33. Sediment Sampling

  34. River Bed and Bank Sampling

  35. Bank Material Sampling @ Ch 1.40, Kg. Sg Deraka

  36. Bed Sediment Sampling

  37. Mean Sediment Size for Bed Material

  38. Bed Material Sampling Jbt Pinang Tunggal Pantai Perai (Sand Mining3) d50=2.50 mm Sand Mining 1 (d/s Pinang Tunggal) d50=1.30 mm d50=2.50 mm Sand Mining 4 (Batu Tera) Sand Mining 2 (u/s Pinang Tunggal) d50=1.20 mm Jbt Ldg Victoria

  39. Bed Material Sampling Muara 2 d50=0.11 mm Jbt Kota Kuala Muda d50=0.10 mm Muara 4 Muara 1 Muara 3

  40. Bed Load Sampling @ Ladang Victoria

  41. Suspended Load Sampling @ Ladang Victoria

  42. Mean Sediment Size for Suspended Load

  43. Summary of Data Collection

  44. River Modelling

  45. Geometry Data

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