Abstract
This study analyzed the characteristics of flood damages and the effects of structural and non-structural flood damage mitigation measures in Korea. First, a theoretical discussion of the structural and non-structural measures to mitigate flood damages was used to select the variables and devise the hypotheses. An analysis was conducted using the Auto-Regressive Integrated Moving-Average (ARIMA) time series methodology, Korean socioeconomic data, and damage characteristics of major flood events. The effects of flood damage mitigation measures on the extent of flood damages were assessed using an intervention time series model. The major findings were that the intervention effects of structural and non-structural measures were statistically significant from 1958 to 2013 (a period of 55 years) and that while the former were ineffective at mitigating flood damages, the latter were successful in doing so. Based on the above findings, policy suggestions for future flood damage mitigation measures in Korea were offered. For structural measures, the government should manage its existing facilities, recover ecosystems of damaged rivers, and devise mitigation measures for urban areas. For non-structural measures, the government should enhance its flood forecasting capacity, revise laws related to flood control and prevention, and update and rationalize land-use plans.
Highlights
Global warming has affected Korea by contributing to increased localized heavy rainfall, leading to floods and resulting in substantial and repetitive damages [1]
We examine the rational basis of numerous studies that used structural and non-structural measures as data sources for flood risk analysis, to appraise the respective flood prevention policies and assess the costs of flood risk management
The objectives of this study are to empirically analyze the characteristics of flood damages in Korea and the effects of flood damage prevention measures employed in the country, both structural and non-structural, on the extent of flood damages
Summary
Global warming has affected Korea by contributing to increased localized heavy rainfall, leading to floods and resulting in substantial and repetitive damages [1]. The government implements structural and non-structural flood damage prevention policies to reduce flood damages. Structural and non-structural measures have been implemented to cope with the resultant flood damages [3]. Structural measures are strategies to control floods using a variety of structures, such as seawalls, dams, levees, and channels. Structural measures to prevent flood damage are based on estimations of predicted damages, and their effectiveness can be quantitatively determined. These measures are rarely cost effective and may modify the environment around them. While non-structural measures are relatively more economical and cost effective over the long term, it is difficult to analyze their preventive effects
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