Impacts of the 2011 Thailand Flood on Groundwater Recharge Potential in Flood Retention Area in the Middle Reach of Tha Chin River

doi: 10.14456/mijet.2022.24

Authors

  • Sasipong Rantasewee Bureau of Groundwater Resources, Thailand
  • Pattarapong Teerapunyapong Mahidol University, Thailand
  • Areeya Rittima Mahidol University, Thailand
  • Kritsanat Surakit Mahidol University, Thailand
  • Yutthana Phankamolsil Mahidol University, Thailand
  • Allan Sriratana Tabucanon Mahidol University, Thailand
  • Wudhichart Sawangphol Mahidol University, Thailand
  • Jidapa Kraisangka Mahidol University, Thailand
  • Yutthana Talaluxmana Kasetsart University, Thailand

Keywords:

The 2011 Thailand flood, flood retention area, groundwater recharge potential, Tha Chin River

Abstract

The non–structural flood control measures under concept of “room for the river” were addressed and contained in the national master plan of flood management of Thailand due to unprecedented flooding occurrence in 2011. Some specific areas particularly in the upper and lower east of the Phanom Thuan, Song Phi Nong, and Bang Len Operation and Maintenance Projects in the middle reach of Tha Chin River were assigned as large flood retention area to retain excessive floodwater and reduce flood peak from the Chao Phraya and Tha Chin River Basins. Consequently, this study aims to explore the potential of groundwater recharge in the assigned flood retention area due to the 2011 Thailand flood. Groundwater flow modelling was then carried out and 4 scenarios of assigned flood stages of 0.50 m, 0.80 m, 1.50 m, and 2.00 m above the land surface were then simulated. The increase in hydraulic heads was investigated and compared with the spatial distribution of groundwater recharge rates done by WetSpass model in the same area. The results show that groundwater recharge potential in flood retention area along the right bank of the Tha Chin River is definitely low due to inappropriateness of hydro–geologic properties and high thickness of clay soil. In addition, the effects of downslope topography on local hydraulic gradient would influence the direction of groundwater flow discharging into the Tha Chin River and adjacent area. The simulated results performed by WetSpass model also show that average groundwater recharge rate in critical flood year in 2011 is 198.54 mm which is quantified as 19.43% of average annual rainfall. Moreover, the lowest value of average groundwater recharge rate is found especially in the lower east of Bang Len Operation and Maintenance Project which is considered as the assigned flood retention area.

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Author Biographies

Sasipong Rantasewee, Bureau of Groundwater Resources, Thailand

Bureau of Groundwater Resources, Regional Office 2, Suphanburi, Thailand

Pattarapong Teerapunyapong, Mahidol University, Thailand

Department of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Thailand

Areeya Rittima, Mahidol University, Thailand

Department of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Thailand

Kritsanat Surakit, Mahidol University, Thailand

Department of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Thailand

Yutthana Phankamolsil, Mahidol University, Thailand

Environmental Engineering and Disaster Management Program, Mahidol University, Kanchanaburi Campus, Thailand

Allan Sriratana Tabucanon, Mahidol University, Thailand

Faculty of Environment and Resource Studies, Mahidol University, Thailand

Wudhichart Sawangphol, Mahidol University, Thailand

Faculty of Information and Communication Technology, Mahidol University, Thailand

Jidapa Kraisangka, Mahidol University, Thailand

Faculty of Information and Communication Technology, Mahidol University, Thailand

Yutthana Talaluxmana, Kasetsart University, Thailand

Department of Water Resources Engineering, Faculty of Engineering, Kasetsart University, Thailand

References

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Published

2022-04-02

Issue

Section

Research Papers