In Malaysia,Flood Areawouldbearound26,720 Sqkmwhich • • Causes Offloodinginmalaysia: • Recent Floodevents: Malaysia Hadexperiencedvarious Floodevents

Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT NATIONAL HYDRAULIC RESEARCH IN OF WATERRELATED OF WATERRELATED NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA MALAYSIA MALAYSIA RESEARCH CENTER FOR WATERRESOURCES RECENT SIGNS RESEARCH CENTER FOR WATERRESOURCES RECENT SIGNS AHMAD JAMALLUDDINSHAABAN AHMAD JAMALLUDDINSHAABAN DISASTERS DISASTERS DIRECTOR DIRECTOR (NAHRIM) (NAHRIM) IN BY: BY: IN STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT • • • • • OUTLINE • • • • • • • OUTLINE NATIONAL HYDRAULIC RESEARCH IN Future Floods Future Floods Conclusion Climate Changeand Recent FloodsinMalaysia Causes ofFloods Flood History inMalaysia Conclusion Climate Changeand Recent FloodsinMalaysia Causes ofFloods Flood History inMalaysia Introduction Introduction STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT INTRODUCTION INTRODUCTION (USD 263 million). Average annual flooddamageisestimated atRM1billion is about9%of totallandareaofMalaysia affecting4.9million. In Malaysia,flood areawouldbearound26,720 sqkmwhich • • Causes offloodinginMalaysia: • Recent floodevents: Malaysia hadexperiencedvarious floodevents. Malaysia islocatedinHumid Tr INTRODUCTION INTRODUCTION December 2006/Jan2007; Kota Tinggi,southernpartof PeninsularMalaysia Human Activities Natural Phenomenon NATIONAL HYDRAULIC RESEARCH IN opics withannualrainfallof 3,000mm. STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT HISTORY OFFLOODSINMALAYSIA HISTORY OFFLOODSINMALAYSIA SELANGOR CLUB PADANG NATIONAL HYDRAULIC RESEARCH IN IN 1949 STITUTE OFMALAYSIA (NAHRIM) KUALA LUMPUR1926 Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT NATIONAL HYDRAULIC RESEARCH IN KUALA LUMPUR AT1971 STITUTE OFMALAYSIA (NAHRIM) MUDA RIVERAT1949 Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT CAUSES OFFLOODINGS CAUSES OFFLOODINGS )NaturalPhenomenon a) Causes offloodinginMalaysia: )Human Activities a) NATIONAL HYDRAULIC RESEARCH IN * HighTide Feb) Nov- * HeavyRainfall(Northeast Monsoon– * Obstructions inRiver * Inadequate DrainageFacilities * Effectofurbanisation * RapidDevelopment * ChangeinLanduse STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT a) NaturalPhenomenon a) NaturalPhenomenon NATIONAL HYDRAULIC RESEARCH IN aag December 2001 Pahang- STITUTE OFMALAYSIA (NAHRIM) – – Heavy Rainfall Heavy Rainfall Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT a) NaturalPhenomenon a) NaturalPhenomenon NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) – – High Tides High Tides Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT Uncontrolled LandClearing b) HumanActivities Uncontrolled LandClearing b) HumanActivities NATIONAL HYDRAULIC RESEARCH IN - - Change Landuse& Change Landuse& STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT Effect ofUrbanisation b) HumanActivities Effect ofUrbanisation b) HumanActivities NATIONAL HYDRAULIC RESEARCH IN - - Rapid Development& Rapid Development& STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT Facilities b) HumanActivities Facilities b) HumanActivities NATIONAL HYDRAULIC RESEARCH IN - - Inadequate Drainage Inadequate Drainage STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT b) HumanActivities b) HumanActivities NATIONAL HYDRAULIC RESEARCH IN - - Obstructions inrivers Obstructions inrivers STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT b) HumanActivities b) HumanActivities NATIONAL HYDRAULIC RESEARCH IN - - Solid Waste&Debris Solid Waste&Debris STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINMALAYSIA INTRODUCTION RECENT FLOODSINMALAYSIA INTRODUCTION NATIONAL HYDRAULIC RESEARCH IN 12 e 2006atJohor 21-24 Dec STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINMALAYSIA INTRODUCTION RECENT FLOODSINMALAYSIA INTRODUCTION NATIONAL HYDRAULIC RESEARCH IN 13 – 17 Jan2007atJohor 17 13 – STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINJOHOR,MALAYSIA INTRODUCTION RECENT FLOODSINJOHOR,MALAYSIA INTRODUCTION NATIONAL HYDRAULIC RESEARCH IN Radar Imageon18Dec2006 STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINJOHOR,MALAYSIA RECENT FLOODSINJOHOR,MALAYSIA NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINJOHOR,MALAYSIA RECENT FLOODSINJOHOR,MALAYSIA NATIONAL HYDRAULIC RESEARCH IN 21 DEC2006 STITUTE OFMALAYSIA (NAHRIM) 18 DEC2006 Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINJOHOR,MALAYSIA RECENT FLOODSINJOHOR,MALAYSIA NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT RECENT FLOODSINJOHOR,MALAYSIA RECENT FLOODSINJOHOR,MALAYSIA NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) Precip Precip Precip (mm) Monthly m Minimu (mm) Monthly Mean (mm) Monthly m Maximu (mm) Precip Monthly m Minimu (mm) Precip Monthly Mean (mm) Precip Monthly m Maximu Ogos 2007 7 Subregion INTEGRATED WATER RESOURCES MANAGEMENT Subregion CLIMATE CHANGEANDFUTURE FLOOD CLIMATE CHANGEANDFUTURE FLOOD Name Name Historic Historic Historic Historic Historic Historic Future Future Future Future Future Future Diff. Diff. Diff. Diff. Diff. Diff. (%) (%) (%) (%) (%) (%) al al al al al al NATIONAL HYDRAULIC RESEARCH IN 176.2 179.2 560.3 600.0 - 176.2 179.2 560.3 600.0 - - - 12.4 12.4 Coast Coast ------West West - - 36.3 36.3 7.9 39.7 7.9 39.7 4.5 1.7 3.0 4.5 1.7 3.0 6.6 6.6 182.3 190.1 165.1 601.3 436.2 - 182.3 190.1 165.1 601.3 436.2 - 12.8 12.8 Klang Klang +37. - - - +37. - - - 53.9 53.9 5.9 5.9 6.9 4.1 7.8 6.9 4.1 7.8 8 8 525.7 564.1 180.9 190.2 525.7 564.1 180.9 190.2 Selan +4.9 Selan - +4.9 - 12.2 12.2 ------8.3 38.4 8.3 38.4 gor gor 3.9 9.3 3.9 9.3 6.8 6.8 32 32 - - +10.0 +10.0 - - Teren +642. +50.6 Teren - - +642. +50.6 1913. 1271. 299.0 289.0 1913. 1271. 299.0 289.0 +3.5 +3.5 14.0 33.6 14.0 33.6 ggau ggau 58.3 19.6 58.3 19.6 STITUTE OFMALAYSIA (NAHRIM) 9 2 7 9 2 7 - - 929.7 239.5 221.8 - 929.7 239.5 221.8 +198. - +198. +7.9 +17. 1128. +7.9 +17. 1128. 10.9 15.4 10.9 15.4 +21. - +21. Kela - Kela ntan 29.2 ntan 29.2 4.5 4.5 7 7 4 5 8 4 5 8 - - Pahang Pahang +51.0 +51.0 208.4 198.5 684.6 633.6 - 208.4 198.5 684.6 633.6 - +4.9 +9.9 +4.9 +9.9 16.6 24.5 16.6 24.5 +8.0 - +8.0 - 32.2 32.2 7.9 7.9 Perak Perak 54.4 +6.2 +44. - +6.2 +44. 54.4 199. 192. 767. 722. - 199. 192. 767. 722. +6. +6. +3. 4.1 9.0 +3. 4.1 9.0 4.9 4.9 5 4 5 4 9 8 9 1 9 4 4 9 8 9 1 9 - - +12. +78. - +12. +78. 176. 173. 705. 626. - 176. 173. 705. 626. Keda Keda +1. +3. - +1. +3. - 1.1 2.1 1.1 2.1 1.0 1.0 50 50 7 0 7 0 6 6 3 7 5 3 6 6 3 7 5 3 h h Johor 60.9 Johor - - - 60.9 53.5 180. 187. 538. 591. - - - 53.5 180. 187. 538. 591. - - 5.2 13. 5.2 13. 8.1 3.9 7.3 8.1 3.9 7.3 9.0 9.0 3 3 0 3 2 7 0 3 2 7 - - - - S S Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT CLIMATE CHANGEANDFUTUREFLOODS CLIMATE CHANGEANDFUTUREFLOODS Simulated Monthly River Flow Simulated MonthlyRiverFlow Simulated Monthly River Flow Simulated MonthlyRiverFlow NATIONAL HYDRAULIC RESEARCH IN - - Periodic MeansandStandardDeviations Periodic MeansandStandardDeviations STITUTE OFMALAYSIA (NAHRIM) ( Flows y Monthl m Minimu ( Flows y Monthl Mean ( Flows y Monthl m Maximu ( Flows y Monthl m Minimu ( Flows y Monthl Mean ( Flows y Monthl m Maximu Ogos 2007 CLIMATE CHANGEANDFUTURE FLOODS cms cms cms cms cms cms CLIMATE CHANGEANDFUTURE FLOODS 7 INTEGRATED WATER RESOURCES MANAGEMENT ) ) ) ) ) ) River River Historic Historic Historic Historic Historic Historic Future Future Future Future Future Future Diff. Diff. Diff. (%) (%) (%) Diff. Diff. Diff. (%) (%) (%) al al al al al al NATIONAL HYDRAULIC RESEARCH IN Klang Klang +0.9 +46. +14. +34. +0.9 +46. +14. +34. 13.3 14.4 45.8 31.2 13.3 14.4 45.8 31.2 - - - - 3.5 2.6 3.5 2.6 7.6 1.1 7.6 1.1 6 8 6 6 8 6 Selango Selango 108.5 107.9 108.5 107.9 - - +0.6 +0.6 +0.6 +0.6 37.5 40.7 37.5 40.7 ------93.0 93.0 0.5 7.1 0.5 7.1 6.6 7.9 3.2 6.6 7.9 3.2 r r Dungun Dungun +171. +42.9 +171. +42.9 569.5 398.4 569.5 398.4 - - +5.2 +4.9 +5.2 +4.9 10.8 13.1 98.3 93.4 10.8 13.1 98.3 93.4 - - 17.6 17.6 2.3 2.3 1 1 STITUTE OFMALAYSIA (NAHRIM) 125.8 158.4 601.7 535.9 1950. 1535. Kelan 125.8 158.4 601.7 535.9 1950. 1535. Kelan +415 - - +415 - - +27. +12. +65. +27. +12. +65. 20.6 32.6 20.6 32.6 tan tan .6 .6 7 1 1 3 8 7 1 1 3 8 - - +48.5 +28.2 +479. +48.5 +28.2 +479. 122.7 156.3 718.1 669.6 2176. 1697. 122.7 156.3 718.1 669.6 2176. 1697. Pahan Pahan - - - - +7.2 +7.2 33.6 21.5 33.6 21.5 6 4 2 6 4 2 g g Perak Perak +4.6 +13. +10. +54. +4.6 +13. +10. +54. 44.4 24.2 139. 183. 299. 286. 578. 523. 44.4 24.2 139. 183. 299. 286. 578. 523. 3 4 5 2 6 7 4 2 7 3 4 5 2 6 7 4 2 7 - - - - +10. +32. Muda Muda +10. +32. 79.1 25.3 104. 105. 340. 307. 79.1 25.3 104. 105. 340. 307. ------5.3 5.3 1.5 1.6 1.5 1.6 20 20 6 6 0 6 0 4 6 6 0 6 0 4 - - Johor Johor +13. +11. +13. +11. 30.6 31.8 32.7 94.0 82.7 30.6 31.8 32.7 94.0 82.7 - - - - 6.8 9.8 6.8 9.8 2.8 0.9 2.8 0.9 - - 7 3 7 3 - - 3 3 Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT CONCLUSION to manage floods toanacceptable level Both curative andpreventivemeasures areneeded are expected whichwouldleadto more extremefloods In thewakeofclimate change, moreextremerainfalls byrapiddevelopment and exarcebated Floods areduetonatural phenomenon circulation andvariability Floods inMalaysiaare related tomonsoon CONCLUSION NATIONAL HYDRAULIC RESEARCH IN STITUTE OFMALAYSIA (NAHRIM) Ogos 2007

7 INTEGRATED WATER RESOURCES MANAGEMENT NATIONAL HYDRAULIC RESEARCH IN Thank You.. STITUTE OFMALAYSIA (NAHRIM)