Journal Article

Assessing flood hazard using flood marks and analytic hierarchy process approach: a case study for the 2013 flood event in Quang Nam, Vietnam

Jason Von Meding, Luu, Chinh, Kanjanabootra, Sittimont

2018

Overview

The production of flood hazard assessment maps is an important component of flood risk assessment. This study analyses flood hazard using flood mark data. The chosen case study is the 2013 flood event in Quang Nam, Vietnam. The impacts of this event included 17 deaths, 230 injuries, 91,739 flooded properties, 11,530 ha of submerged and damaged agricultural land, 85,080 animals killed and widespread damage to roads, canals, dykes and embankments. The flood mark data include flood depth and flood duration. Analytic hierarchy process method is used to assess the criteria and sub-criteria of the flood hazard. The weights of criteria and sub-criteria are generated based on the judgements of decision-makers using this method. This assessment is combined into a single map using weighted linear combination, integrated with GIS to produce a flood hazard map. Previous research has usually not considered flood duration in flood hazard assessment maps. This factor has a rather strong influence on the livelihood of local communities in Quang Nam, with most agricultural land within the floodplain. A more comprehensive flood hazard assessment mapping process, with the additional consideration of flood duration, can make a significant contribution to flood risk management activities in Vietnam.

• Publisher: Springer Nature B.V
• Subject: Agricultural land / Agricultural management / Analytic hierarchy process / Canals / Case studies / Criteria / Dikes / Duration / Embankments / Environmental risk / Flood control / Flood hazards / Flood insurance / Flood management / Flood mapping / Flood risk / Floodplains / Floods / Geographical information systems / Hazard assessment / Health hazards / Local communities / Methods / Risk assessment / Risk management