Asian Water Cycle Initiative
AWCIBeppu, Japan, 02-04 December,2007

Demonstration Projectfor Stung Sangker River
Basin forFlood and Water Resources Management
SO IM MONICHOTH
Department of Hydrology and river Works (DHRW), Cambodia

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1. INTRODUCTION
2. OBJECTIVE
3. DATA AVAILABILITY
4. MODEL APLICATION•One river contributes
flow into Great Lake.

•Located Battambang
Province at southwest ofCambodia•The basin area 2960.955
km2•

Average annual rainfall
about 1,500 mm•Population 800,000, year1998•Estimated people
effected by the flood isabout 142,000, 60 village
24 communes in floodyear 2000

LANDUSE AND SOIL
Landuse
1. MEDM
2.
EMLD
3.
BAMB
4.
WSDR
5.
WSEV
6.
AGRI
7.
DECDSOIL
1. ACg
2.
CMd
3.
CMe
4. LVg5. LPd
6. LPe7.
CMe/LPe(C):
Floating Rice,
Flood from the TONLE SAP,
duration time flood is 6
month
(Low land)Protected area Gov.

% area
30.86
20.14
0.00
9.02
3.93
15.79
20.26
11.05
1.25
15.37
7.79
16.54
12.67
35.32

(A):

(B):

Height land, Low
developed, the Gov. Plan
to developed Hydropower
two location

Agriculture
Mix, Urban area
flash floods
heights density
developed(Meddle land)Topography and GIS data Min. Elevation: 9 m
 Max. Elevation: 1362 m
 Mean. Elevation: 225.981 m
 DEM with 50 m grid resolution
 River networks, roads, catchments,
administrative boundaries

 To studies theimpact of flash
flood in caseheavy raining
 To manage thewater resources

Spill or overflow, X

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

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Flow
Water levels
RainfallHumidity
Temperatures
Wind Speeds
Solar Radiation

Irrigation data
Potential Area (ha) forwet and dry seasons
Wet:42,000 haDry :1,400 ha
Two hydropower havebeen planted with theirrigation areas 37,000ha

Rainfall Station

HydrologicalHydrologicalModel
Model

SWAT
SWAT

Basin
BasinSimulation
SimulationModel
Model
IQQM
IQQM

Hydrodynamic
HydrodynamicModel
Model
ISIS
ISIS

ImpactImpactAnalysis
AnalysisTools
Tools

4.MODEL APLICATION
30/07/2005

05/04/2005

10/12/2004

16/08/2004

22/04/2004

28/12/2003

03/09/2003

10/05/2003

14/01/2003

20/09/2002

27/05/2002

31/01/2002

07/10/2001

13/06/2001

17/02/2001

24/10/2000

30/06/2000

06/03/2000

11/11/1999

18/07/1999

24/03/1999

28/11/1998

04/08/1998

10/04/1998

15/12/1997

21/08/1997

86

4

20

18/08/2005

03/04/2005

17/11/2004

03/07/2004

17/02/2004

03/10/2003

19/05/2003

02/01/2003

18/08/2002

03/04/2002

17/11/2001

03/07/2001

16/02/2001

02/10/2000

18/05/2000

02/01/2000

18/08/1999

03/04/1999

17/11/1998

03/07/1998

16/02/1998

02/10/1997

18/05/1997

01/01/1997

Flow and water levels data at
Battambong Hydrological station in
Stungsangker river

27/04/1997

01/01/1997

Cont.
1000
900

800

700

600

500

400

300

200

100
0

16

14

12

10
HH

flood_stage

schemescheme ofof Model
Model

Rainfall - Runoff

Changes

ChangesSWAT
Climate change

Water abstractions
Dams in basin
In-stream demands
IQQM

Hydrological
Resources
Catchment
Model land cover

Basin Simulation
ModelImpacts
Environmental
Impact Analysis
Tools

Prediction Water

Nutrients & phosphorous

Changes•canal levels•sediment
iSIS •Flooding•River works
Hydrodynamic
Models•In-stream
demands andothers

Socio-economic

Hydrodynamic model

Scope
Scope ofof Scheme
Scheme model
model
Hydrologicalmodel

Simulation
model

Sungker River Sub-basin
Table 4.1:

CodeSub-basin nameSurfacearea (km²)

SS01

Stung Sungker

230.7100

SS02

Stung Sungker

377.6650

SS03

Stung Sungker

250.4250

SS04

Stung Sungker

281.6600

SS05

Stung Sungker

1699.4851

SS06

Stung Sungker

121.0100

Hydrodynamic Model Scheme

SCENARIO
Data use

Interventi
onModels
Application

Base line

Scenario 1:
Climate Change

Scenario 2:
Development

Scenario 3:
DiversionCanal

19851985-2000

19851985-2000

19851985-2000

19851985-2000

Using SWAT model
to calculate the( Increased rain fall20 %)Add 2 newdams,
Increase
irrigatedarea upup-to 80000
haSWAT, ISIS

IQQM, ISIS

Existing

SWAT,
IQQM,iSISClimate Change

Thank You.

dd new canal
to diver flowfor protecting
flood inmiddle partand d/s
ISIS