Definition of stages

Stable water level is defined as a daily change of less than 10 cm from Chiang Saen to Savannakhet; less than 5 cm at Pakse and Stung Treng and no more than 3 cm from Kratie downstream.

Flood stage is defined as a situation when flood level is exceeded; the flood level is determined by the member states.

Alarm stage is defined as a situation when flood level is forecast within the next three days.