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Applying Hydro-Informatics to Introduce

IWRM in Asian River Basins15-18 October 2008, Zhengzhou, People’s Republic of China

The Case of the Bangpakong River Basinin Thailand

Nirut KoonpholDirector of Water Resources Information Technology CenterDepartment of Water Resources, MNRE, Thailand

The views expressed in this paper are the views of the authors and do not necessarily reflect the views or policies of the Asian

Development Bank (ADB), or its Board of Directors, or the governments they represent. ADB does not guarantee the accuracy

of the data included in this paper and accepts no responsibility for any consequences of their use. Terminology used may not

necessarily be consistent with ADB official terms.



VISION

To achieve the integrated

water resources managementwith efficiency and sustainability

on the basis of good governance.MISSION

• To recommend the water policy, plan andmeasure for management, development,conservation, rehabilitation, and solving

problems related to water resources.

Department of Water Resources, MNRE



PrajinburiBasinBangpakongBasin

Bangpakong-Prajinburi River Basin is one of Thailand’s most important regions for its vast fertile

arable area. Locating just next to Bangkok, its location, facilitating transportation to Bangkok and

ports in the eastern seaboard, establishes the basin as a major commercial and industrial center.

Bangkok



BangpakongBasin

10,707 sq.km

PrajinburiBasin

9,651sq.km



Residential

Fish/animalfarm

Sarapifloodplain

Qualityproblem

PhraAjarn

pond

Inundation

Flashflood

Industries

Salineintrusion

Problems/Sources



2. Hydrological-

Water qualitymonitoringstation network

1.Early warning

station network

4. Project website,presentingmeasured/

forecasting dataand warningannouncement

3. Mathematicmodels anddatabase

IWRM ProjectBangpakongRiver Basin

Projectfeatures



Early warning stationis, practically, a

telemetry system,featuring a rain gauge ,

Communication/Control

RainGauge

Alarm

Siren



Alarm will be automatically

raised when rain intensity isup to the preset levels

EW station is installed at flashflood or landslide-risk area

Mitigation measures can beimplemented before the incident



With this network, water level and rainfall atevery crucial stream is continuously monitored.Major water quality parameters, i.e. DO, pH, ORP,Salinity and turbidity, are also monitored atcertain stations, depending on water qualityproblem at such location.

Water level

sensor

Water

RainGuage

Communication/Control

U



River mouthWL,R,Sal,TMonitor Sea level/ Salinty.D/S boundary of model

Lower

BangpakongWL,R,Sal,T,DO,ORPMonitor salinity,

WL and WQ atChachengsaoprovince

Upper

BangpakongWL,R,Sal,T,DO,ORP,pHMonitor WL,WQ

at theconfluence forinter-basin floodwater diversion

planning

LowerNakonnayok WL,R,Sal,T,DO,ORP

Monitor WL, WQfromNakonnayok river and water

from Rungsit.

UpperNakonnayok WL,R,TurbidRepresent waterfrom Khun Dandam, an U/Sboundary of model. Evaluatecheck damefficiency viaturbidity.

LowerPrajinburi

WL,R,Sal,T,DO,ORP,pHRepresentlower

prajinburi riverand monitorWQ fromSarapi

floodplain.

UpperPrajinburiWL,R,Sal,T,DO,ORPRepresentwater fromPhra Prong andHanuman river,monitor WQfrom Kabinburi

SamongWL,R RepresentSamong river,an U/Sboundary.Kabinburi Floodwarning

HanumanWL,R,TurbidRepresentHunuman river,an U/Sboundary.Evaluate check dams efficiencyvia turbidity

PhraProngWL,R,TurbidRepresent Phra

Prong river, anU/S boundary.Evaluate check dams efficiency

via turbidity

PhraSathueng

WL,R Represent PhraSatung river,an U/S

boundary.

Sra KaewWL,R. Torepresent Phra

Prong canal, anU/S boundary.

Sri YadWL,R Represent Sri Yad

Canal, an U/S boundary.

Khlong LuangWL,R RepresentKhlong Luang canal,Flood warning atPanus

Banna canalWL,R Represent Bannacanal, U/S boundary.

Flood warning atBanna

Sarapi

canalWL,R, DO,ORPMonitor WLand WQ in

Sarapi floodplain

Early WarningStationTo monitorrainfall in flash-

flood andlandslide-risk area. WaterResourceProblemsydro-WQ Stationarly Warning StationRainGaugeStation



“Math model is a set of equations that representscharacters of the basin, such as hydrodynam ic,water quality, etc. With real t ime data from

telemetry, they can be used to forecast watersituation w ithin the basin

Result

- Forecastedwaterlevels

- Estimationofwaterdeficiency

- Forecastedsalinityandwaterqualityparameters

- Theresults/warningarepresentedinwebsite

- Themodelscanbeusedoff-lineaswatermanagementtoolsforplanning.

Realtimedata Mathmodel

software



“Measured data, as well as, forecasting results and warningmessages are presented on the project website, which can beeasily accessed via internet by virtually everyone, to encourage

people to use the data to gain understanding on thecharacteristic of the basin, aware of their changes, and helpconserving their water resources.”

Internet

Water level/ Rain

Water Quality data

Forecasting result

Warning

http://tele.dwr.go.th/bpk

presentation tha koonphol

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