This paper measured the organizational effectiveness of the Barangay Disaster Risk Reduction and Management Committees (BDRRMCs). It focused on the flood-prone barangays of Cabanatuan City, Philippines. The study used the Goal Model of Organizational Theory to measure the effectiveness of BDRRMCs. The effectiveness of BDRRMCs was measured against the goals and objectives of Republic Act 10121 also known as Philippines Disaster Risk Reduction and Management (DRRM) Act. The study used as a research tool the Checklist of Disaster Preparedness divided into four thematic areas namely; a) Disaster Prevention and Mitigation, b) Disaster Preparedness, c) Disaster Response, and d) Disaster Rehabilitation and Recovery. The resulting scores were described by the use of Disaster Preparedness Effectiveness Index. The study showed the need for periodic evaluation of the effectiveness of Barangay Disaster Risk Reduction and Management Committees (DRRMCs) and to set the standard of performance not only for the purpose of policy evaluation but also for measuring community involvement in disaster risk reduction.