U-Taphao Water Management

Regional Office 16The Royal Irrigation Dept., MOAC

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Background- Big flood in 2000, lots of casualties and damages.- Government decides to install telemetry system in the basin.- Also to construct Drainage canals connecting U-Taphao river and Sea.- Before completing the U-Taphaotelemetry system in 2004, the conventional flood warning was carried out.- But retrieving the observed data is difficult and not in time

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UU--TaphaoTaphaoBasin Basin

KlongHoiKong

NaMome

BangKlum

HatYai

Sadao

Prig

PadungBesar

PungLa

PaTong

BanPru

Ground Elevation

ranges -0.10to +4.00

m.MSL+300

+290

+349

+22+43

+67+8

3

+68

+104

+622

+4.7 +7

.4+11

+59

+36

+24

+932

+46

+0.7

+1.03+3

.2

Ground Slopes from South to

North and from East and West to CenterDA. = 2,400

sq.km.FOR ITW

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X.111

X.173

X.90

X.44

X.181

Long Profile of U-Taphao

From X.111 to Songkhla Lake

Sw =1/8,000L= 69 km. / S0=1/2,300

L= 25 km./S0=1/10,0

Son

gkh

l

HatYai

BanPru

PungLa

PaTong

Prig

Flood level in 2000

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1. Khlong Sadao 256 sq.km.

12

3

4

7

9

11

10

12

1615

14

13

8

56

17

17

17

17

U-Taphao Sub-Basins2. Khlong Lum 183 sq.km.3. Khlong Prig63.9 sq.km.4. PungLa76.9 sq.km.5. LumYai 286.8 sq.km.6. Khlong Ngae45.1 sq.km.7. KhlongPaToo

62.7 sq.km.8. KhlongJunRai255.1 sq.km.9. KhlongTong

92.3 sq.km.10. K.LekHinFai22.9 sq.km.11. K.WangYang36.8 sq.km.12. K.Wa 125.7 sq.km.13. K.Tum 169 sq.km.14. K.Wad

195.2 sq.km.

Total DA. = 2,400

15. K.BangKlum118.7 sq.km.16. K.Kud 101.1

sq.km.17. The rest 309

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BangKBangKlumlum

KhlongHoiKhlongHoiKhongKhong

NaMoNaMomeme

KuanNiKuanNiengeng

MuaMuangng

HatYaHatYaii

SadSadaoao

X.71 (220 cms.)

X.90 (413 cms.)

X.173A (507 cms.)

X.112 (31 cms.)

X.111 (195 cms.)X.113 (10.3 cms.)

Channel Channel Capacity Capacity

of Uof U--TaphaoTaphao

riverriver

X.44 (461 cms.)

From : Hydrology Div RID

About500 cms.

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Flooding Areas in

200021-23 November 2000

Rainfall Upstream383 mm.Rainfall Downstream 483mm.Average Rainfall431 mm.

HatYai

BangPru

PaTong

PungLa

Prig

Sadao

PaDundBesar

BangKlum

K.HoiKhong

NaMome

KuanNieng

Muang

HatYai

Sadao

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All Measures employed in U-Taphao River Basin

in the area

Non-structural Measures

Install telemetryFlood defenceFlood Allevation

Retention pondsDredging swamps

Green belts

Structural Measures

Diverge water through constructed canals

Reshape drainage canalsDike, polders

Basin ManagementOrganization Management

Making policy

Budget supportDisaster prevention

Flood Insurance

And monitoring

Dredging drainage canals Land-use managementRe-enforce all measures

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Flood forecasting and warning system

Model Result

RainWater level

Rainfall Forecast system

RadarSatelite

Rainfall Forecast

(Aut

omat

ic)

(Automatic)

Inform to concern staff

Warning IssueLevel 1 Be

ReadyLevel 2 EvcuationLevel 3 Emergency Evcuation

(Automatic)

Operators

Remote Stations

Rain

Water Level

Telemetry system Warning/mana

gementWater Level

Warning

Math-model

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Telemetry system in UTelemetry system in U--TaphaoTaphao river basinriver basin

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Components

Topographic survey

HatYai

Khlong Hoi Khong

NaMome

Sadao

Bang Kome

Songkhla

Khlong Ram Yai

Khlong JumRai

Khlong Tum

Khlong WatKhlong Wa

X.181

X.194 Feasibility study and Installation

AmphorTelemetry

Legends

Mathematical modeling to forecast and warning

Training

X.173A

X.112

X.90

SadaoReservoir

X.113

X.44

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X.194

X.181

X.44

X.90

X.173A

X.112

X.113

SadaoRes.

K. RamYai

K.JumRai

K.Tum

K.Wat

K.Wa

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Remote station at K.WatFOR IT

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Remote station at X.194FOR IT

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Remote station at K.TumFOR IT

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Remote station at K.WatFOR IT

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Remote station at X.113FOR IT

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Forecasting and Warning tasks

Forecast flood due to rainfall in the basin and Forecasted rainfall

Forecast water level changes due to gate opening, pumping, etc.

Warning if necessaryFOR IT

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Forecasting and Warning system

Telemetry system

SCADA Server

FloodWorksViews

FloodWorksServer

Telemetry system overview

Rain, water level data

RTUHUB

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Location of 8-stations

X.90

X.112

X.44

X.181

X.194

Patong

PungLa

X.173A

Forecast water level and discharges

X112 (Prig)

PungLa

X173A

PaTong

X90 (Ban Pru)

X44 (HatYai)

X181

X194 (SongKhla Lake)

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Report from Telemetry

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Report from Telemetry

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Report from Telemetry

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Rain-Report from Telemetry

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Rainfall data at station X.44

Telemetry Output

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Water Level data at station X.44

Telemetry Output

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Flood Simulation

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Data SharingGovernor Office

RID, Bangkok ชลประทานจังหวัดสงขลา

Main ServerRegional office

16Web Site Reports

Network

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Project benefitsProject benefits

Continuous data retrieval and archive

Able to issue warning at least 6 hours aheadFOR IT

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