Flood risk and resilience assessment for Santa Rosa-Silang subwatershed in the Laguna Lake region, Philippines

Abstract

This study proposes a measurement and evaluation approach for community resilience to flood disasters using a set of biophysical and socioeconomic indices. It identifies geographic and thematic areas where policy interventions are most critical. The study applies this approach in selected barangays (the smallest administrative units) in the Santa Rosa-Silang subwatershed in the Laguna Lake region of the Philippines. Results suggest that in order to enhance resilience, it is necessary to strengthen the institutional capacity of barangays to formulate and implement disaster risk reduction initiatives as a legitimate part of their overall land-use-based development plans. Disaster risk reduction initiatives should place equal attention on both ex ante and ex post measures. Ex ante measures include putting in place regular community disaster awareness and preparedness programs that would emphasize the cost of a disaster, the value of participation and volunteerism, as well as livelihood and savings formation. Ex post measures include enhancing the capabilities of emergency facilities and services by providing permanent and volunteer personnel with regular training and equipment. Resource constraints could be addressed by maximizing strong linkages between local government units, academics and non-governmental organizations to enable financial, material, and knowledge transfer. Bridging institutional relationships with nearby barangays and strengthening their bonds with local networks of residents, leaders, and organizations may also help to spread the cost of reducing disaster risk and to promote resilience.