DISASTER SITUATION REPORT TO UNDP RESIDENT REPRESENTATIVE
Prepared by: UNDP/MARD - DISASTER MANAGEMENT UNIT, VIE/97/002
13:00 Sunday, 12 September, 2004
Summary of Current Disaster Conditions in Vietnam
1. Flood Damage Potential: LOW IN THE NORTHERN, AND IN CENTRAL, MEDIUM IN THE SOUTHERN RIVER SYSTEMS
2. Situation Analysis of Flood on Rivers in Vietnam:
(According to Bulletin No.107DB/TVBBO and Bulletin No.95DB/TVTNBO, issued by the Vietnam Hydro-meteorological Service in Hanoi at 10:30, 09 September 2004).
NORTHERN RIVER SYSTEMS:
Red River System:
The downstream flood water levels on the Red River are decreasing rapidly. At 7:00 on 12 September 2004, the flood water level at the Hanoi Gauging Station was at 6.76 meters (much below Alarm Level I = 9.50 meters).
Forecast:
The downstream flood water levels on the Red River will continue decreassing rapidly. By 7:00 on 14 September 2004, it will likely be at 5.9 meters.
Thai Binh River System:
The downstream flood water level on the Thai Binh River is decreasing. At 7:00 on12 September 2004, the flood water level at the Pha Lai Gauging Station (Hai Duong Province) was at 2.79 meters (1.18 meter below Alarm Level I = 3.50 meters).
The downstream flood water levels on the Thai Binh River System will continue decreasing. By 19:00 on 13 September 2004, the flood water level at the Pha Lai Gauging Station will likely be at 2.40 meters.
CENTRAL RIVER SYSTEMS:
The flood water levels on rivers in provinces from Quang Nam to Quang Ngai are rising; while those on rivers in the Northern Central Vietnam are decreasing slowly; and those on rivers in the Middle and Southern Central Vietnam and in the Highland are are fluctuating slightly.
At 7:00 on 12 September 2004, the flood water levels on some rivers in the region were as follows:
- Ma River (Giang Gauging Station –Thanh Hoa Province): 0.69 meter (much lower than Alarm Level I = 3.50 meters)
- Ca River (Nam Dan Gauging Station – Nghe An Province): 4.75 meters (much lower than Alarm Level I = 5.40 meters),
- La River (Linh Cam Gauging Station – Ha Tinh Province): 1.24 meters (much lower than Alarm Level I = 4.00 meters),
- Thu Bon River (Cau Lau Gauging Station-Quang Nam Province): 0.41 meter (much lower than Alarm Level I = 2.00 meters),
- Tra Khuc River (Tra Khuc Gauging Station-Quang Ngai Province): 1.66 meter (1.04 meter below Alarm Level I = 2.70 meters),
- La Nga River (Ta Pao Gauging Station-Binh Thuan Province): 117.61 meters (1.39 meter below Alarm Level I = 119.00 meters),
- Serepok River (Ban Don Gauging Station-Dak Lak Province): 168.95 meters (0.65 meter below Alarm Level I = 169.60 meters).
On 13 September 2004, the flood water levels on rivers in provinces of Quang Nam and Quang Ngai will be continue rising but still lower than Alarm Level I; while those on rivers in the Middle Central, Southern Central, and in the Central Highland will be fluctuating slightly.
SOUTHERN RIVER SYSTEMS:
The upstream flood water level on the Mekong River is rising rapidly; while those on the upstream of the Cuu Long River, the Plain of Reeds and the Long Xuyen Quadrangle are rising slowly.
At 7h:00 on 12 September 2004, the highest flood water level on the Tien River at the Tan Chau Gauging Station (An Giang Province) was at 3.86 meters (0.26 meter above Alarm Level II=3.60 meters) and that on the Hau River at the Chau Doc Gauging Station (An Giang Province) was at 3.40 meters (0.10 meter below Alarm Level III=3.50 meters), at the Moc Hoa Gauging Station (Long An Province) was at 1.12 meter (0.18 meter below Alarm Level II=0.18 meter).
Due to the impact of upstream flood water and high tidal level, the upstream flood water level on the Cuu Long River and on the Plain of Reeds area and the Long Xuyen Quadrangle area will continue rising.
By 16 September 2004, the flood water lever at the Tan Chau Gauging Station will likely be at 4.10 meters (0.10 meter below Alarm Level IIII = 4.20 meters); and that at the Chau Doc Gauging Station at 3.6 meters (0.10 meter above Alarm Level III = 3.50 meters).
3. Next information:
The next information from the Standing Office of the Central Committee for Flood and Storm Control is expected at 13:00, Monday, September 13, 2004.
4. More in-depth information: Contact the DMU Website at:
URL: http://www.ccfsc.org.vn/ (choose “English” on the top-right menu)
or http://www.ccfsc.org.vn/ccfsc/en/
5. Times: All times are given in Vietnamese Standard Time (GMT+7).
Translated by Duong Tat Toan (DMU); Edited by M. Silver (STA)
Distinction of river flood alarm levels:
Alarm Level I - Possible flood condition - River water level is high; threat to low height embankments; flooding of very low lying areas; infrastructure safe.
Alarm Level II - Dangerous flood condition - Flood plane inundation expected; towns and cities still generally protected by flood defences; high velocity River flows pose danger of bank and dyke erosion; bridge foundations at risk from scour; infrastructure generally safe.
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 severe.
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