1. U b Fl d M t T d A H li ti A hUrbanFloodManagement:TowardsAHolisticApproachEcologicalConsiderations:Whygothisfar?SoniaC.Sandhu,SeniorEnvironmentSpecialist,ADB

2. "A true report of certaine wonderfull ouerflowings of Waters now lately inAtruereportofcertaine wonderfull ouerflowings ofWaters,nowlatelyinSummersetshire,Norfolke andotherplacesofEngland:destroyingmanythousandsofmen,women,andchildren,overthrowingandbearingdowne wholetownes andvillages,anddrowninginfinitenumbersofsheepe and other cattlesheepe andothercattle Quoteof EdwardWhite,1607[1]

3. Cities:MetabolicUnitsTh h t &Throughput &ProcessInput OutputInput OutputThroughput &ProcessProcess[2]

4. NaturalandBuiltUrbanWatershedMystic River Watershed, Boston, USA [3]Ecologicaltransformation..?

5. THAILAND. OCTOBER 2011THAILAND.OCTOBER2011

6. [4]

7. LessonsLearntfromThailand Combinetraditionalknowledge &moderntechnology Aim at long term social and economic benefits AimatlongtermsocialandeconomicbenefitsShorttermfinancialbenefitisnotsustainable Holistic approach in planning and management Holisticapproachinplanningandmanagementprevention+adaptation+coping+mitigation Institutional reforms for cross sectoral engagementInstitutionalreformsforcrosssectoralengagementareurgent More applied research prediction and responseMoreappliedresearch predictionandresponse Increaseabilitytocopewithfloodingconsequences flood protection and resilience measures for allfloodprotectionandresiliencemeasuresforallentities(incl.industry)[5]

8. TROPICAL STORM ONDOY TROPICALSTORM ONDOY SEPTEMBER2009

9. TropicalStormOndoy LessonsLearnt Morecomprehensiveurbanplanning (last Master Plan fromplanning (lastMasterPlanfrom1900s) protectionofnaturalurbanwatersheds Adequateweatheralertsystem propertydevelopmentregulations solid waste management systemsolidwastemanagementsystem civildefenceplanning permeablematerialsforroadlining[6a, 6b]

10. CHERRAPUNJI, INDIA ..............CHERRAPUNJI,INDIA..............catchmentdilemma

11. Cherrapunji 12000mmannualrainfall HighwaterscarcityN i t ll ti Norainwatercollection Heavydeforestation Depletion of water levelsDepletionofwaterlevelsdueto: unscientificcoalminingandstonequarrying unregulateduseofgroundwatergroundwater[7,8]watershedignored!

12. LessonsLearntfromCherrapunji Use rainwater as a water (re)sourceUserainwaterasawater(re)source Revivaloftraditional rainwaterstoragesupplementedbyimprovedmoderntechnologypp y p gy Regulation ofgroundwateruse Equitable distribution of waterEquitabledistributionofwater Higheconomicimpactsofunsustainablebehaviorandconsumptionpatternsp pEcology matters!Ecologymatters!

13. MUMBAI 26 JULY 2005,MUMBAI26JULY2005,THEMITHI RIVER

14. [9,10, 11]

15. LessonsLearntfromMumbaifloodsandtheMithiRiver Protection of surface water bodies and naturalProtectionofsurfacewaterbodies andnaturaldrainsiscrucialforfloodprotection Integratedsolidwasteandwastewatergmanagement isnecessarytopreventadditionalsedimentationandclogging Bioaccumulationofpollutantsleadstoseverehealthissuesforthelocalpopulation Urbanpovertyandnaturalwaterdrains thedichotomyNaturalandSocialEcologymatters![10]

16. Commonthreadshigh mitigation costs.. Choking natural breathinghighmitigationcosts..Choking natural breathingabilityofcities..uncontrolleddevelopment..naturalflooddefenseshit.increaseinimpermeablesurfaceshighdensities..Ageing,limitedorpoorlymaintaineddrainage,it ti d lid t i f t tsanitationandsolidwasteinfrastructure.overextractionofgroundwater..landsubsidence.tenurelaws prevailing weakness in copinglaws..prevailingweaknessincopingabilities.regulationsweakorviolated ..naturalwatershedEcologyscribbled!

17. SANFRANCISCO..URBANWATERSHED FRAMEWORKanewapproachtourbanwatermanagementa e app oac to u ba ate a age e t

18. SanFrancisco:KeyChallenges Agingwater&seweragei f Benefitstoimpactedi iinfrastructure Regionalseismicactivity Flooding sea level risecommunities EconomicandenvironmentalSustainability Flooding,sealevelrise Sustainability[11]

19. SanFrancisco:HolisticApproach Watershedcharacterization Screeningwatershedalternativesforcollectionsystemgoals balancinggreen andgrey solutions Thetriplebottomline sustainabilityanalysis tooptimizefinancial,socialandenvironmentalbenefits. Communitiestransparencyinoptionselection Recalibrationofthehydraulicandhydrologicmodel Riskbasedassetmanagement usingperformancebasedgreeninfrastructure Institutionalbalance Water,Power,Sewer SanFranciscoPublicUtilitiesCommission[12]

20. SanFrancisco:greyandgreensolutions Collectionsystemsinstreets/parking lotsstreets/parkinglots Permeablepavements bioretentionsplantersp Buildingcollectionsystems GreenRoofs Undergrounddetentionbasins Collectionsystemprojectsappliedinlargespaces Bioretentionbasins Raingardens Wetlands[12]

21. References[1]NewesoutofSummersetshire,originallyprintedin1607forEdwardWhite,reprintedbyErnestE.Bakerin1884,woodcut.[2]WikimediaCommons,June2008byThemanilaexperience[3]ScreenshotsoftheMysticRiverElectronicEnvironmentalAtlasproducedbytheMysticRiverWatershedAssociationandtheMetropolitanAreaPlanningCouncil,http://mysticriver.org/atlasmaps/,27.02.13[4]U.S.MarineCorpsphotobyCpl.RobertJ.Maurer[ ] p p y p[5]SaidIrandoust,AsitK.Biswas,FloodinAsia:LessonstobelearntfromThailand,TheNation,25January2012.[6a]TheresaS.Samaniego,Turningdisasterpronemetrointoasafe,sustainablehaven,PhilippineDailyInquirer,10August2012.[6b]WalterAng,WhatOndoycanteachusabouturbanplanning,PhilippineDailyInquirer,04.Octobre2009.[ ] g, y p g, pp y q ,[7]WikimediaCommons,August2010byPPYoonus[8]Acutewaterscarcityatwettestplaceonearth,ExpressIndia,26November2008.[9]WikimediaCommons,August2005byHiteshAshar[10] Wikimedia Commons 13 September 2008 by Nicholas (Nichalp)[10]WikimediaCommons,13September2008byNicholas(Nichalp)[11]ORFMumbai,MakingtheSeweraRiverAgain WhyMumbaimustreclaimitsMithi,May2011.[12]SanFranciscoPublicUtilitiesCommission,UrbanWatershedFramework AnewapproachtoStormwaterManagementinSanFrancisco,May2012.