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Decreasing groundwater quality at Cisadaneriverbanks: Groundwater-surface water

mapping approach | Asian Physics Symposium2015

Irawan, DE., Julian, MM., Kuntoro, AA., Yeni, D., Agustin,A., Wiavianto, S., and Puradimaja, DJ.

Institut Teknologi Bandung

Aug 19, 2015 (version1)

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Introduction

Methods

Results

Closing

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Introduction

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Location

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River and the city

Cisadane river holds a very strategic role:

• domestic water supply: min 25.54 m3/s max 484.4 m3/s• raw water for industries• main drainage: 1100 km2

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Previous researches

• Discharge modeling (SWAT Modeling)• Water quality• Landuse impact• Groundwater - river water interactions?

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Watershed map

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Issues

• decreasing quality: 84% contaminated• source: domestic, hotels, restaurant, auto workshop,

industries (Fe and Mn)

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Methods

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Data

• Water level observations:• 60 groundwater level• 60 river water level• Physico-chemical parameter observations:• temperature,• TDS, EC, BOD, COD, TSS• Cu, Fe.

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Water interaction model

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Results

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Model segments

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Flownet

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Water interaction model

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Water interaction model2

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Water contamination model

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Closing

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Future directions

• Hopefully it can be the basis of a more quantitativeapproach to predict the interactions between groundwaterand river water along the stream.

• More analysis on the predictions:• computer modeling of the watershed to predict groundwater

flow• water quality using multivariate analysis (cluster, PCA,

decision tree)• hydrological budget using R packages Hydromad (by

Joseph Guillaume) and Reservoir (by Sean Turner)

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Acknowledgements

• Research funding: ITB• Field team: Hendri Silaen• Modeling reviewer: R.F. Lubis

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Thank you

• This slides are made by R-Markdown syntax usingLATEXbackend

• Slides pdf are available at My Slideshare repo• Codes are available at My Github repo• @dasaptaerwin