I.  Flood Bulletin includes:  Besides issuing daily Hydrological forecasts, regarding the flood situation on rivers in the flood season, the General Department of Hydro-Meteorology shall issue "Flood Bulletins" and "Emergency Flood Bulletins" corresponding to the following situations:

• A Flood Bulletin: When the flood water level downstream on the Red River and/or on Thai Binh River is higher than Alarm Level II and likely to increase; or when another of the rivers listed in the table of River for which Flood are Announced reaches Alarm Level III, a Flood Bulletin is issued.
• An Emergency Flood Bulletin: When the flood level on one of the rivers listed in table of River for which Flood are Announced is higher than Alarm Level III and likely to increase, an Emergency Flood Notice is issued.

II.  Content of a Flood Bulletin includes:

• The Title of the Flood Bulletin: A Flood Bulletin is classified by type of flood, and indicates the names of rivers and locations affected (see table of River for which Flood are Announced).
• An outlined Synopsis of the Flood for the Last 24 Hours, listing both true water level data measured the day before, and the most up-to-date data.
• Forecast water levels on the Red River, on the Thai Binh River, on the Cuu Long River, and flood peaks on other rivers (see table of River for which Flood are Announced). The possibility and probable development of a flood in a designated period are identified. The forecast water level value is compared to flood warning level value or special flood level value.

III. Regulation on Flood and Storm Warning:

• A Flood Bulletin is transmitted daily at 11:00. In case a flood becomes complicated, additional information will be transmitted at 21:00.
• Emergency Flood Bulletins: there are 2 official transmissions daily at 11:00 and 21:00. In case a flood is particularly violent or becomes complicated, an additional transmission will be made between the 2 official transmissions.