Proposal Reporton“Flood Hazard Mapping Projectin
Huong River Basin ofThua Thien Hue Province”

Prepared byPHAM Viet Tien
Center for Application of Hydro-meteorological Technology(belong to National Hydrology Meteorology Service - NHMS)
Vietnam

FLOOD HAZARD MAPPING TRAINING COURSE
JFY 2008

CONTENT
1. Background of the proposal.
2. Outline of the target river basin.
3. Schedule of implementation.
4. Estimated budget.
5. Expected effectiveness1. Background of the proposal
Vietnam is located in the Southeast Asia with the population of 82 million.
The weather is influenced by the tropical monsoon climate. This results in very
high rainfall; the mean annual precipitation is approximately at 2,000 mm.
There are outward aspects of weather to cause heavy rainfall such as typhoons,tropical depressions and cool air, especially the combinations of typhoons-cool air
or tropical depressions-cool air in Vietnam. Flood has been one of the main
disasters in Vietnam for a long time. We have a long history fighting against
floods, now it seems to be a huge problem of the country. Floods have caused big
loss of life and properties, negative impacts on socio-economic development andenvironment in particular and sustainable development of the country..
The Vietnamese government have been paying serious attentions to flood
prevention and mitigation. 16 November 2007, prime minister approved: The
national strategy for disaster prevention and mitigation to 2020 in declare
172/2007/QD-TTG. Some of it’s Missions relative non-construction solutions fordisasters prevention and mitigation below as:- Policies to promote technological and scientific activities, attract
investments, promote foreign co-operations and resources mobility, etc forthe disaster prevention and preparedness.
---

Promote propaganda, and increase community's awareness. Developabilities for disaster self-prevention. Strengthen relationships within thecommunity and the neighborhood to further facilitate disaster
preparedness and response. Establish voluntary forces for emergency
response, search and rescue. Utilize the capabilities of social organizations
in emergency response and recovery. Develop voluntary forces for
propaganda, post-disaster recovery and production.
Encourage
individuals or organizations both in/out side of the country to support
effectively community in various forms.
Governmental budget is allocated to projects of disaster preparedness andmitigation; and used as back-up for post-disaster recovery. National
reserves are used for disaster preparedness and mitigation if needed.
Mobilize ODA funds to the disaster preparedness and mitigation projects.
Prioritize non-repay ODA funds to capabilities enhancement, technology
transfer and management knowledge.
The state authorizes the Committee of People at provincial and districtlevels to actively attract and mobilize lawful capitals for disaster
preparedness and mitigation.

--Enhance the approaches in propaganda, education, community awarenessraising to disaster preparedness and mitigation. Embed the basic
knowledge of disaster preparedness into education programs at school sothat we can educate young students of various situation responses during
disaster and also support their family and community.
Develop training programs for people who involve directly in disaster
preparedness and mitigation activities, focusing on management staff,
plan development staff, specialized staff and core staff.
Improve activities in fundamental investigations, invest in research andapplication of new technologies for disaster preparedness and mitigation.

2. Outline of the target river basin.
The Huong river has the basin area of 2,830 km2 that representing 56% of
total area of Thua Thien-Hue province and is located from 16o00’ to 16o45’ of thenorth latitude and from 107o00’ to 108o15’ of the east longitude. In the Huong
river basin, there are about 800,000 people mostly populated in Hue City and 7
district of plain area generating 90% of income of Thua Thien - Hue province. It
plays an important role in water resource management as well as the inundation
status of the province. More than 80% of this basin area is hills and mountains.
Hue city (ancient capital) is one of the world cultural heritages with a lot of
historial architectures. It is located in downstream near Huong River therefore it
is one of cities which are affected heavily by flood hazard in coastal centralVietnam.
THE HUONG RIVER BASIN MAP

EAST SEA

Figure 1. The Huong river basin map

This basin has steep with shortly river and highly-concentrated rainfall andhave high flood frequency. Hue City is affected heavily by inundation.
According to water level date observed at Kim Long station (Hue city) duration
27 years 1977-2003, there were 33 flood events, which top water level was higher
than 3.0 m (grade III flood warning, Le Loi street along right bank of Huongriver is 3.2 m); 10 flood events, which top water level was higher than 4.0 m. 5
flood events, which top water level was higher than 4.5 m. These monthly
distributed in table 1.

Figure 2. Inundation status in Hue imperial city in the history flood event
November 1999
Table 1. Monthly distributed flood events in Huong river (1977 - 2003)Month JanFebMarAprMayJunJulaugu

Sept

Oct

Nov.

Dec

Events

H>3.0 m

00001

101

514101

H>4.0 m

0000

10001

620

H>4.5 m000000000

410

There were 4 history flood events in past 50 years
Year history flood event

1953

1975

1983

1999

Maximum water level in Hue city (m)

5.50

5.32

4.90

5.81

The time of flood event occurred

Sept

Oct

Oct

Nov

The big flood events usually occur during middle of September to middle ofNovember annually.

3. Schedule of implementation
3.1 To convince the government of Thua Thien Hue province from to pay for aproject: Flood hazard mapping.
3.2 The objective of the project: to establish Flood hazard mapping for Huong
river basin of Thua thien Hue province.
3.3 Agency project implementation and other agencies collaborated: TheNational Hydro-meteorological Service, Hydro-meteorological Center Thua Thien
Hue province and the districts People Committee belong to Huong river basin in
Thua Thien Hue province.
3.4 Time project implementation: 3 years (2009-2011)
3.5 Project implementation- Reviewing the exiting inundation map in Thua Thien Hue province.
- Preparation the data: Satellite Image; GIS data, topography, administration,
use land, forestry map of Huong river basin. Hydro-meteorological data: rainfall,run-off etc.
- Investigate the status flooding by history flood events in Huong river basin.
- To establish Flood hazard mapping for Huong river basin of Thua thien Hueprovince.
- Strengthening the capacity of flood forecasting for Thua thien Hue province
Hydro-meteorological Center.
- Provide training for local government and residents belong to Huong river
basin on the use of flood hazard map
4. Estimated budged

Year

Implementation content• Software: Arc GIS• Hard ware (PC, Notebook, Scanner, plotter, printer, camera,GPS, ect.)- Reviewing the exiting inundation map.
- Preparation the data.
2009- Investigate the status flooding by history floodevents- To establish Flood hazard mapping for Huong river
basin of Thua thien Hue province.
- Strengthening the capacity of flood forecasting for2010
Thua thien Hue province Hydro-meteorologicalCenter.

2011- Provide training for local government and residents
belong to Huong river basin on the use of flood hazardmap- Summarized project

Total

Cost (US$)
3,000
20,00060,000100,000

50,000233,000

5. Expected effectiveness- Flood Hazard map is an effective tools in minimizing the flood disaster in theHuong river basin, it is very useful to minimize loss of human lives andproperties and the smooth, safe and fastest way to move to evacuation area canbe attain by using flood hazard map. It is also effective in using this to decide for
local leaders in flood emergencies.
- If the project has high efficient, we can apply for other similar area in mycountry.