Geohazard Assessment of Developed Areas in Metro Manila and Vicinity: Some Case Studies

Federico C. Jacoba, Jr., Karlo L. Queano,

Gilbert Emerson C. Bascos and Edward B. Aguinaldo

Urban Geology Section, Lands Geological Survey Division

Mines and Geosciences Bureau

North Avenue, Diliman, Quezon City

Abstract

The lack of consideration on the part of developers/project administrators to the natural environment has led to numerous problems and in some cases, tragic incidents.  The Cherry Hills Landslide incident in August 1999 is a clear proof of this. To date, cases where geologic conditions were not considered in land development continue to be unearthed. This paper presents some examples, at least in the Metro Manila, Bulacan and Rizal area. Among the geohazards identified are differential settlement, landslide and flooding.

Since Metro Manila and adjacent suburbs continue to experience rapid population growth and urbanization, the urgency to eliminate if not lessen the impacts of geologic hazards is a necessity. The recognition of these hazards and the incorporation of geologic data to development plan are essential in avoiding the catastrophic effects of these natural hazards.