To reduce health effects of flooding, it is essential to have in place a framework to prepare and manage the risk of major flood incidents. Kanchanaboon& Techachokewiwat(2010) have studied the development of preparedness to respond to emergencies for the Thai Ministry of Public Health. This study sought to understand the systems in place to prepare for flooding within the authority of the Ministry of Public Health. The study showed that the role and authority of Public Health in preparation for emergency response has focused on the education of individuals and communities in primary healthcare to be able to help patients, the public and staff. This work includes the surveillance, prevention and control of communicable diseases and the rehabilitation and support psychological victims. Preventative, such as injury prevention, includes the assessments of risks in the natural, built environment and health promotion programs are aimed built promoting community resilience. Public health operations need to be highly reactive and capable of delivering a high quality response within a short period of time. The Public Health workforce need to collaborate with other professionals such as those in transport, communications and the power industries.In order to deliver a coordinated response. The study also found that the front line response is led a the local level by people and organizations who at the local areas are most affected .This perspective is in accordance with the principle of local management (Landesman, 2005; Kamolvetch, 2011 & Charearnmaung, 2010). Overall therefore, Public Health professionals have an essential role in the operational area of flood disaster management and prevention.