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Assessment of Vulnerability to Extreme Flash Floods in Design Storms

Author

Listed:
  • Eung Seok Kim

    (Department of Civil Engineering, Sunmoon University, 100, Kalsan-ri, Tangjeong-myeon, Asan-si, Chungnam-do, 336-708, Korea)

  • Hyun Il Choi

    (Department of Civil Engineering, Yeungnam University, 214-1, Dae-dong, Gyeongsan-si Gyeongbuk-do, 712-749, Korea)

Abstract

There has been an increase in the occurrence of sudden local flooding of great volume and short duration caused by heavy or excessive rainfall intensity over a small area, which presents the greatest potential danger threat to the natural environment, human life, public health and property, etc . Such flash floods have rapid runoff and debris flow that rises quickly with little or no advance warning to prevent flood damage. This study develops a flash flood index through the average of the same scale relative severity factors quantifying characteristics of hydrographs generated from a rainfall-runoff model for the long-term observed rainfall data in a small ungauged study basin, and presents regression equations between rainfall characteristics and the flash flood index. The aim of this study is to develop flash flood index-duration-frequency relation curves by combining the rainfall intensity-duration-frequency relation and the flash flood index from probability rainfall data in order to evaluate vulnerability to extreme flash floods in design storms. This study is an initial effort to quantify the flash flood severity of design storms for both existing and planned flood control facilities to cope with residual flood risks due to extreme flash floods that have ocurred frequently in recent years.

Suggested Citation

  • Eung Seok Kim & Hyun Il Choi, 2011. "Assessment of Vulnerability to Extreme Flash Floods in Design Storms," IJERPH, MDPI, vol. 8(7), pages 1-16, July.
    • Handle: RePEc:gam:jijerp:v:8:y:2011:i:7:p:2907-2922:d:13172
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    Cited by:

    1. Weifang Shi & Weihua Zeng, 2013. "Genetic k -Means Clustering Approach for Mapping Human Vulnerability to Chemical Hazards in the Industrialized City: A Case Study of Shanghai, China," IJERPH, MDPI, vol. 10(6), pages 1-18, June.

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