The Federal Emergency Management Agency or FEMA is a government agency in the United States which is organized under the Department of Homeland Security (DHS) in the Emergency Preparedness and Response Directorate. The agency is charged with what it defines as 4 domains of emergency management: mitigation, preparedness, response and recovery. Mainly, FEMA responds to any disaster that occurs in the United States that is declared a federal disaster area by the President of the United States.
FEMA coordinates the work of federal, state, and local agencies in responding to floods, hurricanes, earthquakes, and other natural disasters. FEMA provides financial assistance to individuals and governments to rebuild homes, businesses, and public facilities; trains firefighters and emergency medical professionals; and funds emergency preparedness throughout the United States and its territories (description by Wikipedia).
Federal Emergency Management Agency (FEMA) flood related web page links: