Country report
Some achievements under
the framework of AWCI activity.
For Huong river basin of Vietnamm?
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Application on Huong
RiverArea: 2830 km2 belong to ThuaThiên Hue Province.
Huong river system.
Location: latitude 16-170N,longitude 107-1080E.
in the West and the South-West:

NWþ CæBiÊKimLongÚ
ÊÚKhÝt- î ngHuÕnh§iÒnÊÚ B×Truong Son mountain range andBach Ma with tops about of 1000m;
East : East Sea. This is transitionalclimate region.
Contain 3 main river: Ta Trach,Huu Trach and Bo river. Ta Trachriver is upper stream of HuongriverESÊÚPhóècÊÚAL- í iÊÚ TµL- ¬ng«ng
ÊÚNam§Ê
Ú

Th-î ng NhËtB¶n®å l- uvùcs«ngH- ¬ngvµc¸ctr¹mkhÝt- î ngthñyv¨ntrªnl- uvùcSchematic
DiagramHuongSystem
The hydrological model for short-term flood
forecasting for Huong river.
-Rainfall-runoff models;-Method of corresponding stage ;- Multivariable regression ;- In recent years, different models like TANK,
NAM, MARINE.
- Forecasting accuracy is 75-80% for shortterm forecasts respectively

Hydrometeorologicalstation network

3 meteorologicalstations;
4 hydrological stations
in upstream;
2 hydrological stations
in downstream• 3 meteorological stations with long history areHue (1915 up to now), Nam Dong (1973 up tonow). Aluoi (1976 up to now).
• 4 hydrological stations in upstream, measuring
rainfall (X), water stage (H) and water discharge(Q) are Thuong Nhat on Ta Trach River (1979up to now) with the drainage area of 208 km2,Binh Dien on Huu Trach River with the drainage
area of 570 km2 and Co Bi on Bo River with thedrainage area of 720 km2 (1979-1985), Duong
Hoa with the drainage area of 686 km2 (19861987).
• 2 hydrological stations in downstream, observing
X, H are Kim Long (Hue) on Huong Rives andPhu Oc on Bo River (1979 up to now).
• Some hydrological investigation and rainfall
points in dowmstream.

• 4 - 8th, April, 2007, Working group of Prof. Dr. Toshio
Koike, Dr. Saavedra Valertbiano Oliver Cristian, Mr.
Kengo Aizawa, Mr. Ben Burford come to visit HMS,
vietnam;Some activities of Working group- Introducing to GEO, GEOSS and AWCI, floodforecasting, river management system, satellite
observations to Huong River; introduce the sytem
and available satellite data.
- Working group visited the Trung Trung Bo CentralRegional Hydro-meteorological Forecasting Center
at Da Nang city;- Working at Hydro-meteorological Forecasting Center of Hue city of Thua
Thien Hue Province (Trung Trung Bo Central Regional Hydrometeorological Forecasting Center)- Visited some hydro-meteorological stations in the Huong river basin:
Hydrological stations: Thuong Nhat, Phu Oc, Binh Dien, Kim Longstation.
Meteorological stations: Nam Dong, Hue station.

Discuss about the capabilitiesof Observation, transmission
data of hydro-meteorologicalstations in the Huong river
basin, capability of hydrometeorological of Hue Center.

Thuong Nhat Hydrological station-Vietnam have supplied the data of Huong river basin for
AWCI:- Rainfall data, water level, discharge data of Thượng Nhat,Kim Long;- Rainfall data of some other local point in flood in November,1999;- GIS data.

Chó thÝch> 2000 mm

Qu

¶ng

B×nh

1700

- 2000 mm

1400- 1700 mm

1200- 1400 mm

1000- 1200 mm

800

Qu¶ng TrÞ- 1000 mm

600- 800 mm

500

- 600 mm

400

- 500 mm300- 400 mm

200- 300 mm

100- 200 mm

50- 100 mm

Thõa Thiªn - HuÕ§µ N½ng

Qu¶ngNamQu¶ng Ng·i

B×nh §ÞnhRainfall and flood occur in the Huong
River basin in 11/1999
Flood trace on flood happen November,1999 at Kim Long Hydrological Station•••••Dr. Oliver have applied the Distributed Hydrological Model (DHM) forHuong river basin
Location:
107.5-107.75E 16.0-16.5 N
Simulated area:
1500 km2 down to Kim Long
Computing Grid:
500 m
Target event:22-26 Nov 2004
Input Rainfall:–Observed• Rain gauge network (daily)• Global Satellite TRRM, 3hr, 0.25°–Forecast• Meso- scale HRM: at hydro-met. stations (24 hr lead time)• Global JMA/GPV, 24 hr lead time issued every 12 hours• NWPO: UKMO, NCEP
–Assimilated• Clouds microphysics ARPS, IMDASFrom 22nd – 27th, May, 2007, Dr. Oliver had Arrived to Hanoi for shorttraining courses to introduce about the Distributed Hydrological Model(DHM) and introduce about the results for application DHM for Huong
river basin;

The result of Distributed HydrologicalModel (DHM) applied for Huong riverbasinRainfall data input model
Daily rainfall comparison
at Thuong Nhat

Hourly rainfall comparison
at Binh Dien

400
350

6030' ARPS at Binh Dien
50

Raingauge Thuong Nhat

300

6-h HRM Thuong Nhat

250

1-h HRM at Binh Dien

TRRM Thuong Nhat

200

40

150
30

100
50

200

100
24, 1:00

9/1
24, 8:00

24, 15:00

24, 22:00

25, 5:00

25, 12:00

9/11

9/21

10/1

10/11 10/21

10/31

10/11 10/21

10/31

11/10 11/20

11/30

25, 19:00

600

Raingauge Binh Dien500

6-h HRM Binh Dien

400

Daily rainfall comparison
at Binh Dien

TRRM Binh Dien

300
200
100
0
9/1

9/11

9/21

10/1

11/10

11/20

11/30

Spatial distribution of JMA/GPV

Spatial distribution ofTRRM

August to November
Simulation

November Simulation
Daily simulation at Kim Long

Daily simulation at Kim Long
7000
6000

Sim gauge

5000

Obs f(WL)7000

Sim gauge

6000

Obs f(WL)5000

Sim JMA/GPV

4000

Sim HRM 6-h

3000

Sim UKMO

4000

2000

3000

1000

2000

0
1

1000

61116

2126

2004 Nov

0
8/1

8/16

8/31

9/15

9/30

10/15

10/30

11/14

11/29

2004

Daily simulation at Kim Long

Sim gauge
Obs f(WL)

7000Sim JMA/GPV

6000

Sim HRM 6-h5000

Sim UKMO

4000

24-30 November , 2006 Simulation

3000
2000
1000
024252627
2004 Nov282930

Schedule activity
Year 2008:- Vietnam will provide seriously, fully all data of Hydrometeorological data of Huong river basin from 2007 to 2010;- Vietnam will strongthen the capacity of station network(quality, quantity equipments, data tranmission system,computer software in processing and conservation of data for
Huong river also for Hue Hydro-meterological Forecasting
Center;- Need AWCI to Organize GBHM training course in Vietnam or
In Japan for Establishment of flood and flash flood warningand forecasting system on the Huong river system;
improvement the skill, Knowledge in building the input data formodeling:
The content of the training course: skill, Knowledge in application of DHM
for Huong river basin (DEM, land use, soil type, geological maps, delineate
the watershed, divide the basin to sub-basins, set-up spatial distribution of
study area, prepare time series data: rain gauge and interpreted radar
products).

–Need to modify, simplify and build the menu of GBHM formodel application easily;- Need to training for analyses of High resolution satellite data
for apply in disaster management, estimate rainfall and floodinundation in implementation of flood forecasting and warning
system in ungauged or poorly-gauged river basins.
- To share the skill and know ledges in combination of the datafrom the rain gauges with radar information in order to increase
the accuracy of rainfall estimates for flood forecasting.
- Assistance, provide of software, sophisticated hydrologicalmodels to compute and forecast flood for Huong river basins(these models can get input data from the sources: satellitebased rainfall product, rada products, numerical weather
prediction model products and hydro-meteorological data);

2009 year:• Need AWCI to Improve the Capacity buildingof forecasting and management of Drought andWater Quality. Specielly, in using satellite data,
the skill in making the drought mapping andWater Quality. Mapping;• Vietnam will pilot running the DHM inforecasting hydrology for Huong river after AWCItransfer the skill and technique and also theprovided satelitte data for Huong river;2010 year:• Need AWCI to help Vietnam to perform theproject” build the risk map of inundation andflood for Huong river basin” (provide thespecialist, skill, technique, method to perform).

In Vietnam during 2007 have beenvery complicated with several
extreme weather events occurred
all over our country, especially in
the Central part of Vietnam
together with 2 tropical storms and1 tropical depression that exerted
their direct impacts on our territory.
•Flood was very serious with successive andvery high peaks, rather high flood risingintensity, flood water was concentrated very
The points with flood peaks higher quickly and all these circumstances led toserious prolonged inundation in 12 provinces
than III alert in 2007of Vietnam.

• Flood was very serious with successive and very high peaks,
rather high flood rising intensity, flood water was concentrated
very quickly and all these circumstances led to serious
prolonged inundation in 12 provinces of Vietnam.
• In the central of Vietnam: ( from 1st October to the end
November 2007) in most rivers in Thua Thien Hue, Quang Nam,
Quang Ngai, Binh Dinh, Phu Yen provinces, occurred 6
extremely big, historical floods such as:
9 The Flood, inundation No-1 in early August 2007

9 Flood, inundation No-2 in early October 2007
9 Flood, inundation No 3 in early November 2007
The common total rainfall for 4 days varied from 500
to 700 mm; in some places, the value was higher 800 mm,
such as Nam Dong: 1773mm, Thuong Nhat: 1248mm, ALuoi: 834mm.
The loss of human and property was very big.

Socio-economic Assessment• Due to TS No. 2 (NONAME):77 people werereported dead, 123 injured, 6 missing people; 1 473
houses were collapsed and damaged; 51 ships
were sank; 67 132 ha of rice field were flooded.
• Due to TYP No. 5 (LEKIMA): 88 people died, 180
injured and 8 missing people; 1 853 houses werecollapsed and damaged; 46 ships were sank; 8 849
ha of rice fields were flooded.
• Although Tropical Depression No. 6: 07 people
died, 01 missing and 92 injured people; 886 houses
were damaged; 9416 ha of rice were flooded anddamaged.
•Thank you very much foryour attention