Flood Mitigation and Management in Thailand
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Flood Mitigation and Management in Thailand. Topics. Nature and Extent of Flooding Data Collection and Forecasting Flood Forecasting and Warning Communication of Flood-Warning Information Other Relevant Information. Nature and Extent of Flooding. ร้อยเอ็ด.

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Topics
Topics

  • Nature and Extent of Flooding

  • Data Collection and Forecasting

  • Flood Forecasting and Warning

  • Communication of Flood-Warning Information

  • Other Relevant Information



ร้อยเอ็ด

แผนที่แสดงพื้นที่เสี่ยงต่อการเกิดอุทกภัยระดับต่าง ๆ ในลุ่มน้ำชีและลุ่มน้ำมูล

มหาสารคาม

ชัยภูมิ

อุบลราชธานี

Flood Risk Area


Flood from the central mekong basin of thailand northeast
Flood from the Central Mekong Basin of Thailand (Northeast)

  • The Khong Basin (50,000 sq.km.)

    • Large flood is not existing in the tributaries due to their small basin area.

    • The flood season from August to September caused by invasion of high backwater of the Mekong river.

    • A long distance flood protection dike of about 800 km. from the Chaing Khan to the Mun river mouth has been constructed along the Mekong river.

  • The Chi and Mun Basin (119,000 sq.km.)

    • Large flood is frequently occurred in the basin due to the heavy rainfall.

    • The flood season from September to October caused by poor drainage system in the basin.

    • About 22 barrages are constructed crossing the Chi and Mun rivers.

    • There are two large reservoirs in the basin, Ubol Ratana dam and Lam Pao dam.



Data collection and forecasting
Data Collection and Forecasting northeast of Thailand


Available data
Available Data northeast of Thailand

  • Hydrological Data

  • Meteorological Data

  • Dam Operation Data

  • Other Data

Most of the data are manually recorded and stored in digital form in the computer mainframe of agencies.


Agencies
Agencies northeast of Thailand

  • The Royal Irrigation Department (RID)

  • The Meteorological Department (MD)

  • The Electricity Generating Authority of Thailand (EGAT)

  • The Department of Water Resources (DWR)


RID northeast of Thailand

  • Statistical daily data of reservoirs

  • Statistical daily data of barrages

  • Daily or hourly or automatic water level data

  • Daily or hourly or automatic rainfall data

  • Daily evaporation data

Forecasting of flooding condition has been carried out by considering the statistical relationship among data of gauging stations.


MD northeast of Thailand

  • Daily or hourly or automatic rainfall data

  • Daily meteorological data

  • Rainfall data by radar

Forecasting of the rainfall and weather condition has been carried out by super computer.


EGAT northeast of Thailand

  • Statistical daily data of reservoirs

  • Daily or hourly or automatic water level data

  • Daily or hourly or automatic rainfall data

  • Daily evaporation data

Forecasting of runoff into reservoirs has been carried out by considering the statistical relationship among data of gauging stations.


DWR northeast of Thailand

  • Daily or hourly or automatic water level data

  • Daily or hourly or automatic rainfall data

  • Daily evaporation data


Flood forecasting and warning
Flood Forecasting and Warning northeast of Thailand


Data Collection System northeast of Thailand

  • Physical data

  • Land use

  • Soils

  • Topography

  • Transient data from gages

  • Rainfall

  • Stramflow

  • Evaporation

  • Reservoir level

  • Other sources of data

  • Weather forecast

  • Data Communication / Telemetry System

  • Radio

  • UHF/VHF

  • Satellite

  • Data Management System

  • Real-time data acquisition

  • Data validation

  • Data processing

  • Databases

  • Real-time model updating

  • Modeling / Forecasting System

  • Rainfall-runoff model

  • River hydrodynamic model

  • Reservoir operation model

  • River Forecast

  • Streamflow

  • Water level

  • Warning


Software northeast of Thailand


Schematic layout of the ffws
Schematic Layout of the FFWS northeast of Thailand

FTU

CPU

I/O


Forecasting/Flood Management/Warning System northeast of Thailand

Satellite

Field Station

Radar

Forecasting Result

Operator

Disaster Warning Announcement

Level 1 Alertness

(Automatic)

Level 2 Migration

Rainfall Forecasting

Level 3 Urgent Migration

Water Basin Model

Rain

(Automatic)

Water Level

Rain

Water Level

Telemetering System

(Automatic)

Water management/forecasting System

Flood Warning System

Reporting to Flood Warning Committee

Rainfall Forecasting System


Radio northeast of Thailand

Radio

(15-30 Min. Data)

(15-30 Min. Data)

Leased Line

Leased Line

Leased Line

(Hourly Data)

(Hourly Data)

(Hourly Data)

and Internet, Intranet

Leased Line (Hourly Data)

Water Basin Data Center

Remote St.

1. Salawin Basin

Leased Line (Hourly Data)

2. Khong Basin

3. Kok Basin

4. Chi Basin

Remote St.

Regional Data Center

25.

1. Lumpang Province

2. Saraburi Province

3. Udonthani Province

4. Khon Kaen Province

5. Nakhon Ratcha Sri Ma Province

6. Prachinburi Province

7. Ratchaburi Province

Water Operation Center

8. Songkhla Province

or Internet, Intranet

or Internet, Intranet

or Internet, Intranet

Data Center

Data Center

Data Center

Royal Irrigation Dept.

Meteorological Dept.

Other Agencies

Telemetering Communication Network


Jumhuui Canal northeast of Thailand

Wha Canal

Wadd Canal

Tum Canal

Rumyaai Canal

Sadua Reservoir

X.113

X.181

X.44

X.90

X.173

X.112

X.194

Remote Station

Repeat Station

Remote Station

Remote Station

Master Station

Remote Station



Communication
Communication northeast of Thailand

  • RID has an existing VHF/HF single side band (HF-SSB) and two radio system that is used within the districts.

  • EGAT has installed its own microwave communication system from its network of hydropower stations to its central office.

  • Satellite system allowed to be used by the government departments is “THAICOM”


Flood warning information
Flood-Warning Information northeast of Thailand

  • There are existing flood preparedness plans and mitigation measures in the basin.

  • RID or EGAT’s regional office send the flooding information to the provincial officer who has responsibility in performing flood preparedness plan via telephone or radio.

  • The local emergency teams make preparations to carry out works in areas of likely to be inundated by flooding.

  • The organization of the teams and their duties are clearly indicated.


Other relevant information
Other Relevant Information northeast of Thailand


Network System northeast of Thailand

of

the Thailand Integrated Water Resources Management

(TIWRM)


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