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2020 Vol.30, Issue 2

Research Article

Assessment of the Effect of Sand Dam on Groundwater Level: A Case Study in Chuncheon, South Korea
Bisrat Yifru1
,
Min-Gyu Kim2
,
Sun Woo Chang3
,
Jeongwoo Lee4
,
Il-Moon Chung5*
1Researcher, Department of Land, Water and Environment Research, KICT
  Student of Ph.D. Program, Department of Civil and Environmental Engineering, University of Science and Technology
2Research Specialist, Department of Land, Water and Environment Research, KICT
3Senior Researcher, Department of Land, Water and Environment Research, KICT
  Adjunct Professor, Department of Civil and Environmental Engineering, University of Science and Technology
4Research Fellow, Department of Land, Water and Environment Research, KICT
5Senior Research Fellow, Department of Land, Water and Environment Research, KICT
  Full-time Professor, Department of Civil and Environmental Engineering, University of Science and Technology
*Corresponding Author
30 June 2020. pp. 119-129
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Abstract

Sand dam is a successful water harvesting method in mountainous areas with ephemeral rivers. The success is dependent on several factors including material type, hydrogeology, slope, riverbed thickness, groundwater recharge, and streamflow. In this study, the effect of a sand dam on the groundwater level in the Chuncheon area, South Korea was assessed using the MODFLOW model. Using the model, multiple scenarios were tested to understand the groundwater head before and after the construction of the sand dam. The effect of groundwater abstraction before and after sand dam construction and the sand material type were also assessed. The results show, the groundwater level increases substantially after the application of a sand dam. The comparison of model outputs, simulated groundwater head before and after sand dam application with and without pumping well, shows a clear difference in the head. The material type has also an effect on the groundwater head. As the conductivity of the material increases, the head showed a significant rise.

Keywords
sand dam
recharge
groundwater level
MODFLOW
Chuncheon

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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 30
  • No :2
  • Pages :119-129
  • Received Date : 2020-05-07
  • Revised Date : 2020-05-21
  • Accepted Date : 2020-05-21
  • DOI :https://doi.org/10.9720/kseg.2020.2.119
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