Below,JOESCO flood wall takes us to understand the division of severe emergency response of water and drought disasters.Level I and level II emergency response operations shall be ordered by the commander, and level III and level IV emergency response operations shall be ordered by the commander or deputy commander.

If one of the following situations occurs, it is level II response:

(1) one major flood in one river system in 20 years and 50 years;

(2) one major flood in two or more river systems in 10 to 20 years;

(3) major flood channels reach the warning water level, and general river sections and major tributaries are alert for serious danger;

(4) key flood storage and detention areas are opened;

(5) serious danger in general medium or key small reservoirs;

(6) severe drought or severe drought in two or more cities;

(7) severe drought in one large city or severe drought in more than two medium-sized cities.