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The official flood alarm levels used by the Vietnam Standing Office of the Central Committee for Flood and Storm Control are described herein.

Alarm Level I	*Possible flood condition* - River water level is high; threat to low height embankments; flooding of very low lying areas.
Alarm Level II	*Dangerous flood condition* - Flood plane inundation; expect towns and cities to be generally protected by flood defences; high velocity river flows pose danger of bank and dyke erosion; bridge foundations at risk from scour.
Alarm Level III	*Very dangerous flood condition* - All low lying areas submerged, including low lying areas in cities and towns; safety of river protection dykes in jeopardy; damage to infrastructure begins.
Alarm Level III+	*Emergency flood condition* - General and wide spread uncontrollable flooding; dyke failure a certainty and probably uncontrollable; damage to infrastructure is severe.

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