Flood Damage Reduction in Land Subsidence Areas by Groundwater Management

Yin-Lung Chang, Jinn-Chuang Yang, Yeou-Koung Tung, Chehao Chang and Tung-Lin Tsai

A chapter in Recent Advances in Flood Risk Management from IntechOpen

Abstract: Continuing land subsidence can diminish the effectiveness of an existing flood mitigation system and aggravate the flood hazard. This chapter demonstrates that, through groundwater management with an effective pumping scheme, flood hazard and related flood damage in land subsidence area can be reduced. The chosen study area is in the southwest coast of Taiwan, which has long been suffering from frequent and wide-spread flooding primarily due to land subsidence induced by groundwater overpumping. Numerical investigation in the study area clearly shows that effective management of groundwater pumping can play an important role in long-term sustainable solution for controlling the spatial-temporal variability of future land subsidence, preventing the flood hazard from worsening, reducing the flood damage, and satisfying the groundwater demand.

Keywords: flood hazard; flood damage reduction; risk analysis; groundwater management; land subsidence (search for similar items in EconPapers)
JEL-codes: H84 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:165622

DOI: 10.5772/intechopen.80665

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