In Malaysia,Flood Areawouldbearound26,720 Sqkmwhich • • Causes Offloodinginmalaysia: • Recent Floodevents: Malaysia Hadexperiencedvarious Floodevents
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RECENTRECENT SIGNSSIGNS OFOF WATERWATER RELATEDRELATED DISASTERSDISASTERS SOURCES MANAGEMENT ININ MALAYSIAMALAYSIA BY: AHMAD JAMALLUDDIN SHAABAN DIRECTOR INTEGRATED WATER RE RESEARCH CENTER FOR WATER RESOURCES NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) OUTLINEOUTLINE •• IntroductionIntroduction •• FloodFlood HistoryHistory inin MalaysiaMalaysia SOURCES MANAGEMENT •• CausesCauses ofof FloodsFloods •• RecentRecent FloodsFloods inin MalaysiaMalaysia •• ClimateClimate ChangeChange andand INTEGRATED WATER RE FutureFuture FloodsFloods 7 •• ConclusionConclusion Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) INTRODUCTIONINTRODUCTION INTRODUCTIONINTRODUCTION Malaysia is located in Humid Tropics with annual rainfall of 3,000mm. Malaysia had experienced various flood events. Recent flood events: • Kota Tinggi, southern part of Peninsular Malaysia December 2006/ Jan 2007; SOURCES MANAGEMENT Causes of flooding in Malaysia: • Natural Phenomenon • Human Activities In Malaysia, flood area would be around 26,720 sq km which is about 9% of total land area of Malaysia affecting 4.9 million. INTEGRATED WATER RE Average annual flood damage is estimated at RM 1 billion (USD 263 million). 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) INTRODUCTIONINTRODUCTION INTRODUCTIONINTRODUCTION SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) INTRODUCTIONINTRODUCTION INTRODUCTIONINTRODUCTION SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) HISTORYHISTORY OFOF FLOODSFLOODS ININ MALAYSIAMALAYSIA KUALA LUMPUR 1926 SOURCES MANAGEMENT SELANGOR CLUB PADANG INTEGRATED WATER RE IN 1949 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) MUDA RIVER AT 1949 SOURCES MANAGEMENT KUALA LUMPUR AT 1971 INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) CAUSESCAUSES OFOF FLOODINGSFLOODINGS Causes of flooding in Malaysia: a) Natural Phenomenon * Heavy Rainfall (Northeast Monsoon – Nov- Feb) * High Tide SOURCES MANAGEMENT a) Human Activities * Change in Landuse * Rapid Development * Effect of urbanisation INTEGRATED WATER RE * Inadequate Drainage Facilities * Obstructions in River 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) a)a) NaturalNatural PhenomenonPhenomenon –– HeavyHeavy RainfallRainfall SOURCES MANAGEMENT INTEGRATED WATER RE Pahang- December 2001 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) a)a) NaturalNatural PhenomenonPhenomenon –– HeavyHeavy RainfallRainfall SOURCES MANAGEMENT INTEGRATED WATER RE 7 Pahang- December 2001 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) a)a) NaturalNatural PhenomenonPhenomenon –– HighHigh TidesTides SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities -- ChangeChange LanduseLanduse && UncontrolledUncontrolled LandLand ClearingClearing SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities -- RapidRapid DevelopmentDevelopment && EffectEffect ofof UrbanisationUrbanisation SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities -- InadequateInadequate DrainageDrainage FacilitiesFacilities SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities -- ObstructionsObstructions inin riversrivers SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities--ObstructionsObstructions inin riversrivers SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) b)b) HumanHuman ActivitiesActivities--SolidSolid WasteWaste && DebrisDebris SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTION 21-24 Dec 2006 at Johor SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTION 13 – 17 Jan 2007 at Johor SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTIONRadar Image on 18 Dec 2006 SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTION Radar Image on 19 Dec 2006 SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTION Radar Image on 19 Dec 2006 SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA INTRODUCTIONINTRODUCTION Radar Image on 19 Dec 2006 SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA 18 DEC 2006 SOURCES MANAGEMENT INTEGRATED WATER RE 21 DEC 2006 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) RECENTRECENT FLOODSFLOODS ININ JOHOR,JOHOR, MALAYSIAMALAYSIA SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) CLIMATECLIMATE CHANGECHANGE ANDAND FUTUREFUTURE FLOODFLOODSS Subregion West Selan- Teren- Kela- Keda Name Coast Klang gor ggau ntan Pahang Perak h Johor Historic 1271. 722. 626. 591. 600.0 436.2 564.1 929.7 633.6 2 Maximu al 2 9 7 7 1913. 1128. 767. 705. 538. m Future 560.3 601.3 525.7 684.6 9 5 8 3 2 Monthly +642. +198. +44. +78. - Precip -39.7 165.1 -38.4 +51.0 Diff. 7 8 (mm) 7 8 9 3 53.5 (mm) +37. +21. +6.2 +12. (%) -6.6 -6.8 +50.6 +8.0 -9.0 8 4 1 5 Historic 192. 173. 187. SOURCES MANAGEMENT 179.2 190.1 190.2 289.0 221.8 198.5 al 9 6 3 Mean 199. 176. 180. Future 176.2 182.3 180.9 299.0 239.5 208.4 Monthly 4 6 0 +17. +6. +3. Precip Diff. -3.0 -7.8 -9.3 +10.0 +9.9 -7.3 (mm) 7 5 0 +3. +1. (%) -1.7 -4.1 +4.9 +3.5 +7.9 +4.9 -3.9 4 7 Historic 13. 12.4 12.8 12.2 33.6 15.4 24.5 9.0 2.1 Minimu al 3 m Future 7.9 5.9 8.3 14.0 10.9 16.6 4.1 1.1 5.2 MonthlyINTEGRATED WATER RE Precip Diff. -4.5 -6.9 -3.9 -19.6 -4.5 -7.9 -4.9 -1.0 -8.1 (mm) - - (%) -36.3 -53.9 -32 -58.3 -29.2 -32.2 -50 7 54.4 60.9 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) CLIMATECLIMATE CHANGECHANGE ANDAND FUTUREFUTURE FLOODSFLOODS Simulated Monthly River Flow - Periodic Means and Standard Deviations SOURCES MANAGEMENT INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) CLIMATECLIMATE CHANGECHANGE ANDAND FUTUREFUTURE FLOODSFLOODS Selango Kelan- Pahan River Klang r Dungun tan g Perak Muda Johor Historic 1535. 1697. 523. 307. Maximu 31.2 107.9 398.4 82.7 al 1 4 7 4 m 1950. 2176. 578. 340. Future 45.8 108.5 569.5 94.0 Monthl 7 6 2 0 y +14. +171. +415 +479. +54. +32. +11. Diff. +0.6 Flows 6 1 .6 2 5 6 3 +46. +27. +10. +10. +13. (cms) (%) +0.6 +42.9 +28.2 8 1 4 6 7 Historic 286. 105. SOURCES MANAGEMENT 14.4 40.7 93.4 535.9 669.6 32.7 Mean al 4 6 299. 104. Monthl Future 13.3 37.5 98.3 601.7 718.1 31.8 7 0 y +65. +13. Diff. -1.1 -3.2 +4.9 +48.5 -1.6 -0.9 Flows 8 3 +12. (cms) (%) -7.6 -7.9 +5.2 +7.2 +4.6 -1.5 -2.8 3 Historic 183. Minimu 2.6 7.1 13.1 158.4 156.3 25.3 9.8 al 6 m 139. INTEGRATED WATER RE Future 3.5 0.5 10.8 125.8 122.7 5.3 6.8 Monthl 2 - y Diff. +0.9 -6.6 -2.3 -32.6 -33.6 -20 -3 44.4 Flows +34. - - - (cms7 ) (%) -93.0 -17.6 -20.6 -21.5 (Ogoscms) 6 24.2 79.1 30.6 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) CONCLUSIONCONCLUSION Floods in Malaysia are related to monsoon circulation and variability Floods are due to natural phenomenon SOURCES MANAGEMENT and exarcebated by rapid development In the wake of climate change, more extreme rainfalls are expected which would lead to more extreme floods Both curative and preventive measures are needed INTEGRATED WATER RE to manage floods to an acceptable level 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM) SOURCES MANAGEMENT Thank You.. INTEGRATED WATER RE 7 Ogos 2007 NATIONAL HYDRAULIC RESEARCH INSTITUTE OF MALAYSIA (NAHRIM).