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Groundwater Modeling In Sangon Hamlet And Surrounding Areas Using Finite Difference Method

Author

Listed:
  • Tedy Agung Cahyadi

    (Universitas Pembangunan Nasional “Veteran” Yogyakarta)

  • Rika Ernawati

    (Universitas Pembangunan Nasional “Veteran” Yogyakarta)

  • Hana Trijayanti

    (Universitas Pembangunan Nasional “Veteran” Yogyakarta)

  • M. Iqbal Ansori

    (Universitas Pembangunan Nasional “Veteran” Yogyakarta)

  • Ilham Firmansyah

    (Universitas Pembangunan Nasional “Veteran” Yogyakarta)

Abstract

Sangon Hamlet is included in the mountains which are dominated by andesite rocks and volcanic breccias which cross each other and have a distribution of joints and faults forming a fracture. The fracture is a medium for draining water in the area. There is a difference in ground water level as seen from the well. To re-detail the groundwater flow that has been formed, a groundwater flow pattern modeling is carried out. The modeling is done by numerical method assisted by Modflow Flex Software. For building the model, it is necessary to prepare a concept model, calibration and validation. In this area there are 2 aquifer systems, namely unconfined aquifers and aquitards. Furthermore, the model was calibrated using the sensitivity analysis method. The calibration results are obtained, namely the RMS value of 8.74% with a standard error estimate of 1.27 m and a correlation coefficient of 0.98. From this model, it is known that the flow of water moves from the northwest-north area in the form of a plateau by heading to the east-southeast area which is a lower plain and towards the Plampang River.

Suggested Citation

  • Tedy Agung Cahyadi & Rika Ernawati & Hana Trijayanti & M. Iqbal Ansori & Ilham Firmansyah, 2021. "Groundwater Modeling In Sangon Hamlet And Surrounding Areas Using Finite Difference Method," Earth Sciences Pakistan (ESP), Zibeline International Publishing, vol. 5(2), pages 76-81, December.
    • Handle: RePEc:zib:zbnesp:v:5:y:2021:i:2:p:76-81
    DOI: 10.26480/esp.02.2021.76.81
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