By law and by function, emergency management in the United States is a cooperative effort on the part of all levels of government and the private sector.
The Civil Defense Act of 1950, Public Law 920, as amended, is the legal basis for national civil defense and emergency management in the United States. The act states that responsibility for national civil defense and emergency management is vested jointly in the federal, state, and local governments. Each state must have its own laws, which are consistent with the federal law, if they wish to qualify for federal aid and assistance. This means that state laws must be compatible with, or require the same basic course of action as, the federal law.
State of Oregon
Oregon Revised Statues (ORS) Chapter 401 is the legal basis for emergency management in Oregon. The governor is responsible for the emergency services system within the State of Oregon according to ORS 401-035(1). The continued mission of the Office of Emergency Management is to execute the governor’s responsibilities to maintain an emergency services system as prescribed in this chapter by planning, preparing, and providing for the prevention, mitigation, and management of emergencies or disasters that present a threat to the lives and property of citizens of and visitors to the State of Oregon (ORS 401.260(3)).
County & City
Each county of this state shall, and each city may, establish an emergency management agency, which shall be directly responsible to the executive officer or governing body of the county or city (ORS 401.350).