Risk assessment is vital for humanities,especially in assessing natural and manmade hazards.Romblon,an archipelagic province in the Philippines,faces frequent typhoons and heavy rainfall,resulting in floods,with the M...Risk assessment is vital for humanities,especially in assessing natural and manmade hazards.Romblon,an archipelagic province in the Philippines,faces frequent typhoons and heavy rainfall,resulting in floods,with the Municipality of Santa Fe being particularly vulnerable to its severe damage.Thus,this research study intends to evaluate the flood risk of Santa Fe spatially using the fuzzy analytical hierarchy process(FAHP),taking into account data sourced fromvarious government agencies and online databases.GIS was utilized tomap flood-prone areas in the municipality.Hazard assessment factors included average annual rainfall,elevation,slope,soil type,and flood height.Distance to river,distance to road,types of building structure,mean age,gender ratio,and average annual incomewere considered parameters of vulnerability assessment.Exposure assessment considered land use,distance to evacuation facility,household number,and population density.Weights for each parameter were determined through pairwise comparison performed by experts.These weights were then incorporated into risk assessment estimation.The developed risk map identifies five high-risk barangays(small local government units).The study’s findings will enable local government units to establish flood mitigation programs,implement targeted mitigation measures,and formulate strategic response plans to lower risk and safeguard the residents of Santa Fe effectively.展开更多
文摘Risk assessment is vital for humanities,especially in assessing natural and manmade hazards.Romblon,an archipelagic province in the Philippines,faces frequent typhoons and heavy rainfall,resulting in floods,with the Municipality of Santa Fe being particularly vulnerable to its severe damage.Thus,this research study intends to evaluate the flood risk of Santa Fe spatially using the fuzzy analytical hierarchy process(FAHP),taking into account data sourced fromvarious government agencies and online databases.GIS was utilized tomap flood-prone areas in the municipality.Hazard assessment factors included average annual rainfall,elevation,slope,soil type,and flood height.Distance to river,distance to road,types of building structure,mean age,gender ratio,and average annual incomewere considered parameters of vulnerability assessment.Exposure assessment considered land use,distance to evacuation facility,household number,and population density.Weights for each parameter were determined through pairwise comparison performed by experts.These weights were then incorporated into risk assessment estimation.The developed risk map identifies five high-risk barangays(small local government units).The study’s findings will enable local government units to establish flood mitigation programs,implement targeted mitigation measures,and formulate strategic response plans to lower risk and safeguard the residents of Santa Fe effectively.
