Participatory Aquifer mapping Closure workshop Summary...
Transcript of Participatory Aquifer mapping Closure workshop Summary...
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ParticipatoryAquifer mappingCatalysing socialresponsestomanagegroundwater
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UrbanGroundwaterWellsturnintoreal-estate
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GroundwaterA“Blindspot”inUrbanplanning
An“XFactor”inUrbanwatersupplyAtleast assignificantifnotmore
inurbanwatersourcing
Increasing urbanisationGrowing townsandcities
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Bengaluru – 2001wardwise populationTotalpopulation:5.1million
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Bengaluru – 2011wardwise populationTotalpopulation:8.4million(65.2%growth)
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Multi-sourcinginsidethecity(Borewells registeredwithBWSSB,usedwithinthecitytoo)
Subdivision C3
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Groundwaterforthe“periphery”• The“periphery”nowmorepopulous• Groundwaterprimarysourcefortheperiphery• Nosinglesourceofdatafornumberofwellsorvolumeofwater
extracted• A2005ISECstudyestimates200,000to450,000borewells in
Bangalore.• Samestudyestimated~6500 • 3000waterTankersbelonging
to100-120watertankercompanies
• OfficialThyagaraja reportpegs500+MLD,400,000+borewells
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Atomised disperseduniverseofactors
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…andwedon’tevenunderstandourAquifers.
Cancitizensbecomeapartofunderstandingthis?
WillcitizensthenembraceAquifermanagementresponses?
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ParticipatoryAquiferMapping:Theprocess
•“Goto”platform.•Createsenseofcitizen
ownership•Compatibilitywithvarious
froms ofdatagathering•Opensourcetoolsfordata
gathering
•Facilitationforimplementingresponses•Events,festivals,workshops•Peer-to-peerexchangesofbestpractices•EngagementwithGovernance
•Datacleaning&verification
•Hydrological&hydrogeologicalinterpretation
•Demystificationofscience•Developing
communication
• Stories&readydata• Observationsites• Investmentsininstruments(?)
• Readingandsharingdata
Citizens:sharethestoryoftheirwellsandtheirwater
withthecity
Knowledgepartners:Collation,
interpretation,scenariobuildingand
managementresponses
Virtualplatform:Visualisation &
communicationplatform
Conversation&dialoguespace
Citizens:ConversationsCommunicationEngagementwithGovernance&Advocacy
Implementresponses
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ParticipatoryAquiferMapping:Theprocess
•“Goto”platform.•Createsenseofcitizen
ownership•Compatibilitywithvarious
froms ofdatagathering•Opensourcetoolsfordata
gathering
•Facilitationforimplementingresponses•Events,festivals,workshops•Peer-to-peerexchangesofbestpractices•EngagementwithGovernance
•Datacleaning&verification
•Hydrological&hydrogeologicalinterpretation
•Demystificationofscience•Developing
communication
• Stories&readydata• Observationsites• Investmentsininstruments(?)
• Readingandsharingdata
Citizens:sharethestoryoftheirwellsandtheirwater
withthecity
Knowledgepartners:Collation,
interpretation,scenariobuildingand
managementresponses
Virtualplatform:Visualisation &
communicationplatform
Conversation&dialoguespace
Citizens:ConversationsCommunicationEngagementwithGovernance&Advocacy
Implementresponses
OutputsOutcomes
Processisasimportantasoutputs.It’stheprocessthedrivestheoutcomes
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8Micro-watershedsintheUpperPonnaiyar Watershed
• Southeastofthecity,8micro-watersheds
• Completelygroundwaterdriven.Nopipedsupplywhenstarted
• 33Sqkm,multiplewards+apanchayat (Halanayakanahallipanchayat)
• 15lakes(inandoutofBBMP)• Mixedlanduse– residential,
commercial,institutional&peri-urban
• Census2011:Residentialpopulation:117,844inBBMParea&9797inpanchayat areas
Kaikondrahallikere Rainbow drive
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CitizenParticipationNatureofParticipation Result/outcomesofparticipationSharingofhistoricalNarratives ofopenwellsandborewells
Historicalperspectives onlocalgroundwater
DirectSharingofavailabledatameasuredandcollectedinthecontextofcommunities’ownwatermanagement
Comprehensive micro-leveldataandImplementationofsomemanagementresponses
Permission,cooperationandengagementtoinstallmeasuring devicesandconductVESstudieswithincommunitiesandtheirwatersources
Primaryhydrogeological data,validationofnarrativesandcitizen shareddataAndImplementationofsomemanagementresponses
Volunteerism andengagementofcitizensincollaborationwithotherresearchinstitutions(eg:ATREE)tocollectprimarydata
Dataandlearnings - especiallywithrespecttolakes
Engagementwithgovernanceinstitutionsonissuesofwater&wastewater
Innovative proposalsandnewsolutionstoinstitutionsofgovernance
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Geology:TheallimportantWeatheredzone
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Hydrogeology:SomeinsightsintoAquifers
Fig 9: Narrative data based hydrogeological section along NE-SW of the watershed
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Hydrogeology:Combiningallformsofdata
Aquifer Layout in 3d
1) Shallow aquifer: 0-30m 2) Intermediate aquifer: 35-80m3) Deep aquifers: 100-152m, 180-205m, 210-250m, 290-335m& 366-396m
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Clusterstudies:LearningataMicro-level
Data is valuable only when there is someone to act on it !
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APRcluster
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RBDcluster
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KKhalli clusterMonsoon – Lake to Shallow Aquifer Dry Season – Shallow Aquifer to Lake
Lake recharging Shallow aquifer recharging
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Managementresponses:Alreadydemonstratedbycitizens
Tools/investments Outcomes
DemandManagement Waterefficientdevices,Metering andTariffs
Reducedwaterconsumptionatcommunitylevels,reducedlifecycle costsforwater
Groundwater&stormwatermanagement
Communitising ofwells/borewells &Artificialrechargestructures
Increasedwatersupplytoaquifersandlocalfloodcontrol
EnhancingSupplySecurity
Rooftop rainwaterharvestingassupplementalorprimarysupply
Reduceddependenceongroundwaterandlocalfloodcontrol
Wastewatermanagement
Secondary andTertiarytreatmentinvestments,dual /tripleplumbing
Reducedfreshwaterdemand,reducedwaterpollution
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Devarabeesanahalli:AMicro-watershedView
AreaoftheDevarabisanahallimicro-watershed
416.42ha
TotalPopulation(Residential+office)*
157490
Residentialpopulation 71827(46%)
Lakearea 24.25ha*(Arrived at based on a combination of primary data and land use analysis)
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Atthecurrentwaterdemandofaverage200LPCDand50LPCDforOfficesTotalannualwaterdemand 7063 ML/Year (~ 19 MLD)AverageAnnualRainfall 970 mm Normal Rainfall
yearTotalrainfallendowmentforthemicrowatershed
4039 ML (~11.MLDEquivalent)
RainfallEndowmentisonly60% ofthewater-shed’scurrentestimated“steadystate”waterconsumption.
@135lpcd residentialconsumptionand40lpcd forworkingpopulation– i.e.ifeveryonedidDemandManagement
Totalannualwaterdemand 4745 ML/Year(13MLD)
AverageAnnualRainfall 970 Mm(Normalyear)
TotalAnnualRainfallendowment 4039 ML/Year(11MLD)
RainfallEndowment~85%ofyourtotalwaterdemandWastewatergeneratedannually(@80%offreshwaterused)
3796 ML/Year(10.4MLD)
SoDemandManagement+Utilisation ofRainfallEndowment+Reusewaste-water=SustainableatMicro-watershedlevel for“steadystate”estimateddemand
Devarabeesanahalli:AMicro-watershedView
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Livinghistoryofouraquifers:Connectingcitizenstowaterheritage,Instillingasenseofprideandownership
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CubbonParkWells
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ClassicOrchards
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OpenWellMapping
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RechargeWells
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Borewells
- Deeperthan600ft?- Costoftreatment?TDS- Doeshydrofracturinghelp?- DriedupborewellstakenupforRecharge- Dolakesrechargedeepaquifers?Ina3-5yeartimeframe?
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WellDiggerCommunityMannuVaddar
- Collectingandsharinginformationallthetime
- OpenWellchampions
- Livelihoods
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IntroduceUrbanwaters.in<Shubha>
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MyWell,OurWater:LetstakecareofitThankyou!
www.bengaluru.urbanwaters.in