A qualitative analysis for flood risk indexing in Malabon City

• Main Authors: Lamberte, Albert E., Sevilla, Maria Emilia P.
• Format: text
• Language: English
• Published: Animo Repository 2010
• Subjects: Floods > Philippines > Malabon City; Flood control > Philippines > Malabon City; Flood damage prevention > Philippines > Malabon City; Civil Engineering
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/5158
• Institution: De La Salle University

Malabon City in the Philippines, which consists of 21 Barangays (Districts), needs proper assessment of flooding for the city has been adversely affected by rainfall, high tide, and simultaneous events of rainfall and high tide for more than two decades. Both local and regional government agencies have put in place structural as well as non-structural measures to alleviate the flooding and its damages however it has been observed that up to this time these adverse effects still exist.The study attempts to do a risk-based analysis-based on the study of the city's flooding events due to rainfall, high tide, and simultaneous events. It uses a methodology based on the study of Kannami (2008) for measuring flood risk in each barangay, where risk is a function of Hazard, Vulnerability, Exposure, and Capacity. The results show that of the 21 barangays, the two (2) barangays that are consistently most exposed to flood risk are Catmon, and Tanyong while the barangay that has been consistently least exposed to risk is Flores. The results also show that out of the four (4) factors (Hazard, Vulnerability, Exposure, and Capacity) Exposure contributes most to the Flood Risk in the barangays.To reduce the exposure to the risk of flooding in the barangays of Malabon City, the study recommends the use of risk-based analysis that includes both structural and non-structural measures to alleviate flooding and its damages to the residents. The flood risk indices and the radar graphs produced in this study give an objective assessment of which barangays should be given more attention in terms of programs aimed at alleviating the effects of flooding and which among the components that contribute to flood risk be addressed first especially when resources of the local government are limited.