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Flood Vulnerability Assessment for Prioritizing and Evaluating Rehabilitation of Ungauged Reservoirs Considering Climate Change
Water ( IF 3.4 ) Pub Date : 2020-07-03 , DOI: 10.3390/w12071901
Sang-Min Jun , Moon-Seong Kang , Soonho Hwang , Jihoon Park , Jung-Hun Song

The objective of this research was to apply the flood vulnerability assessment to ungauged reservoirs for prioritizing and evaluating the reservoir rehabilitation according to climate change. The flood vulnerability index (FVI) can quantitatively compare the flood vulnerabilities of the analysis targets and can be used for the relative comparison of hydraulic structures to determine the reinforcement priority. In this study, we proposed a simple FVI that contained exposure and adaptive capacity of the hydraulic structure. We selected ten dam heightening reservoirs in Korea and constructed data for flood vulnerability assessment. The FVI was calculated before and after the dam heightening to analyze the priority and effect of reservoir rehabilitation under climate change. Flood vulnerability indices were estimated for four periods (1995s: 1981–2010, 2025s: 2011–2040, 2055s: 2041–2070, 2085s: 2071–2100) and before/after the dam heightening project. As a result, flood vulnerability indices decreased after the dam heightening project for all reservoirs, and the indices have increasing tendencies in the future. The indices developed in this study can be useful to determine the priority and to evaluate the effect of rehabilitation for hydraulic structures.

中文翻译:

考虑气候变化的未测量水库修复优先级和评估的洪水脆弱性评估

本研究的目的是将洪水脆弱性评估应用于未测量的水库,以便根据气候变化对水库修复进行优先排序和评估。洪水脆弱性指数(FVI)可以定量比较分析目标的洪水脆弱性,可用于水工建筑物的相对比较,以确定加固优先级。在这项研究中,我们提出了一个简单的 FVI,其中包含水工结构的暴露和适应能力。我们选择了韩国的 10 个水坝加高水库,构建了洪水脆弱性评估数据。计算大坝加高前后的FVI,以分析气候变化下水库修复的优先级和效果。洪水脆弱性指数估计了四个时期(1995 年代:1981-2010 年,2025s: 2011–2040, 2055s: 2041–2070, 2085s: 2071–2100) 和大坝加高工程之前/之后。受此影响,各水库大坝加高工程后洪水脆弱性指数均有所下降,且未来该指数有上升趋势。本研究中开发的指标可用于确定优先级并评估水工结构修复的效果。
更新日期:2020-07-03
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