Preprints
https://doi.org/10.5194/nhess-2022-38
https://doi.org/10.5194/nhess-2022-38
 
09 Feb 2022
09 Feb 2022
Status: this discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The manuscript was not accepted for further review after discussion.

Are the Rich less Prone to Flooding? A Case Study on Flooding in the Southern Taiwan during Typhoon Morakot and Typhoon Fanapi

Yen-Lien Kuo1, Ya-Ming Liu1, Hone-Jay Chu2, and Hung-Ching Lee1 Yen-Lien Kuo et al.
  • 1Department of Economics, National Cheng Kung University, Tainan, 701, Taiwan
  • 2Department of Geomatics, National Cheng Kung University, Tainan, 701, Taiwan

Abstract. The study uses Taiwan as an example to explore whether the budget allocation of risk reduction depends on income-related political power. Specifically, we empirically examine the effect of household income on the probability of flooding. Beginning in 2006, the government implemented an 8-year project referred to as the “Regulation Project for Flood-Prone Areas” with a budget of NT$115.9 billion (US$3.86 billion). Over half of the budget was allocated to local authorities in southern Taiwan to help them carry out flood risk mitigation projects. As it was not clear how the local authorities set their priorities in allocating their budgets, this study investigates whether high-income individuals may have used their political influence to influence the budget allocation to improve the flood risk reduction facilities in their communities. Villages, whose average household income was within the top 10 % in the county or city, were selected as high-income villages and assigned to the treatment group, whereas other villages were included in the control group. The results using propensity score matching (PSM) show that the flood probability of the high-income group (13 % and 16.9 %, respectively) was lower than that of low-income group (22 % and 28 %) during Typhoon Morakot and Typhoon Fanapi, suggesting that high-income areas are less prone to flooding, which might stem from their political power.

Yen-Lien Kuo et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-38', Anonymous Referee #1, 18 Mar 2022
    • AC1: 'Reply on RC1', Yen-Lien Kuo, 22 Mar 2022
      • RC3: 'Reply on AC1', Anonymous Referee #1, 13 May 2022
        • AC3: 'Reply on RC3', Yen-Lien Kuo, 24 May 2022
    • AC5: 'Reply on RC1', Yen-Lien Kuo, 28 May 2022
  • RC2: 'Comment on nhess-2022-38', Anonymous Referee #2, 03 May 2022
    • AC2: 'Reply on RC2', Yen-Lien Kuo, 09 May 2022
      • RC4: 'Reply on AC2', Anonymous Referee #1, 13 May 2022
        • AC4: 'Reply on RC4', Yen-Lien Kuo, 24 May 2022
    • AC6: 'Reply on RC2', Yen-Lien Kuo, 28 May 2022

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2022-38', Anonymous Referee #1, 18 Mar 2022
    • AC1: 'Reply on RC1', Yen-Lien Kuo, 22 Mar 2022
      • RC3: 'Reply on AC1', Anonymous Referee #1, 13 May 2022
        • AC3: 'Reply on RC3', Yen-Lien Kuo, 24 May 2022
    • AC5: 'Reply on RC1', Yen-Lien Kuo, 28 May 2022
  • RC2: 'Comment on nhess-2022-38', Anonymous Referee #2, 03 May 2022
    • AC2: 'Reply on RC2', Yen-Lien Kuo, 09 May 2022
      • RC4: 'Reply on AC2', Anonymous Referee #1, 13 May 2022
        • AC4: 'Reply on RC4', Yen-Lien Kuo, 24 May 2022
    • AC6: 'Reply on RC2', Yen-Lien Kuo, 28 May 2022

Yen-Lien Kuo et al.

Yen-Lien Kuo et al.

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Short summary
This study investigated correlations between the flood probability and the average household income of villages. It was found that high income villages have significantly lower probability of being flooded than low income villages in Southern Taiwan. The propensity score matching was adopted to compare villages with similar hazard (rain), exposure (population), and vulnerabilities (elevation and house price).
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