1 WATER RESOURCES MANAGEMENT SERVICES WEST JAVA PROVINCE Indonesia WATER RESOURCES MANAGEMENT FOR SUSTAINING WATER USE PURPOSES IN West Java province Presented.

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WATER RESOURCES MANAGEMENT SERVICES WEST JAVA PROVINCEWATER RESOURCES MANAGEMENT SERVICES WEST JAVA PROVINCE

IndonesiaIndonesia

WATER RESOURCES MANAGEMENTFOR SUSTAINING WATER USE PURPOSES

IN West Java province

Presented in Workshop Urban Management, ITB

Bandung, 3 March 2011By :

Dr. Ir. Suardi Natasaputra

TopicsTopics

General Information of West Java Province Problems and related with climate changeDevelopment StrategiesConclusion and Recommendation for Research

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INDONESIAINDONESIA

JAWA BARATJAWA BARAT

PROPINSIBANTEN

PROPINSIJAWA TENGAH

DKIJAKARTA

BEKASI

SUBANG

KARAWANG

INDRAMAYU

PURWAKARTA

MAJALENGKA

SUMEDANG

KUNINGAN

CIANJUR

CIAMIS

TASIKMALAYA

GARUT

BOGOR

CIREBON

SUKABUMI BANDUNG

PROPINSI JAWA BARAT

N

EW

S

WEST JAVA PROVINCE

Area : 37,060.4 km2

Adm regions:17 regencies, and 9 municipalities

Population (2007):± 41.5 million peoples

Land UseLand Use

4

WS. Citarum

WS. Cimanuk Cisanggarung

WS. Cisadea Cibareno

WS. Citanduy

WS. Ciwulan Cilaki

WS. Ciliwung Cisadane

River Basin

Water Resources Development and Management based on the River Basin

6

Potential of Surface Water Available and Catchment Area

in 6 River Basins

River BasinArea(Km2)

Water Potential (million m3/year)

Province Regency Total

Cisadane-Ciliwung

3,675.4 5,376.27 162.36 5,538.63

Cisadea-Cibareno

6,693.6 4,908.71 6,078.76 10,987.47

Citarum 11,436.9 10,990.79 1,933.63 12,924.43

Cimanuk-Cisanggarung

7,157.5 7,572.64 305.43 7,878.07

Citanduy 2,682.0 2,341.65 1,200.94 3,542.59

Ciwulan-Cilaki 5,415.0 4,727.83 2,424.73 7,152.60

SUM 37,060.4 35,917.91 12,105.86 48,023.77

Water Resources System And Infrastructures

Water Resources System And Infrastructures

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WRS & Infrastructures

Unit Total

River Numbers 3,277

Lake Numbers 619

Large Dam Numbers 3

Medium & Small Dams

Numbers 25

Coastal length Km 723.65

Irrigation Schemes Number 6,951

Irrigation Area In West Java Province

Irrigation Area In West Java Province

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NumberUnder

AuthorityNo of

SchemesArea (Ha)

1Central Goverment 20 405,864

2West Jawa Province 87 87,034

3

Local Government (Regencies & Municipalities)

398 97,339

4Village Irrigation 6,449 382,691

5 Rainfed Area 113,980

SUM 6,952 1.060.928

9

Irrigation Area in West Java

9

Irrigation area

Rural irrigation(small schemes)

Large schemes

10

Infrastructure

Distribution Demand

• Agriculture• Domestic• Municipal• Industry

Groundwater pump

Irrigation & marshland

Supply

Lake

Head Works

River

Catchment Area

sea

Irrigation Land

Municipal

Low land

10

11

Water Availability and Water Used Comparisons(MCM)/year

No

River BasinWater

Availability

Water Used (million) m3/year Total Water Used

Surplus

Irrigation DMI (SIPPA )

1Ciliwung-Cisadane

5.538,63 1.252,32 202,94

1.455,26

4.083,37

2 Cisadea-Cimandiri

10.987,47 3.139,20 473,74

3.612,94

7.374,53

3 Citarum

12.924,43 7.411,78 930

8.341,78

4.582,65

4Cimanuk-Cisanggarung

7.878,07 5.072,67 42,43

5.115,1

2.762,97

5 Citanduy-Ciwulan

10.695,19 3.395,26 46,45

3.441,71

7.253,48

Jumlah

48.023,79 20.271,23 1.694,56

21.966,79 26.057

Problems and Related with Climate Change

Problems and Related with Climate Change

Existing Problems

Flood & drought, due to:Hydrology Environmental Degradation of the basins, Higher rainfall intensityLonger rainfall periodLead to increase runoff, less infiltration rate.

Groundwater degradation:Uncontrolled water dischargeLess infiltration rate Reduce groundwater level, lead to reduce base flow

Impact of Climate Change(source: Ludwig. F, and Marcus

Moench) On flood & drought:

Higher variability of rainfall,Extreme rainfall occur more often,Less rainfall and increase evaporation, reduced stream flow.

Very little research on the impacts of climate change on groundwater, uncertain impact. Variability of rainfall will affect recharge rates. 12

Problems and Related with Climate Change

Existing Problems

Water quality degradation:

Waste water pollutant from domestic & industries Garbage High sediment contentLead to high cost of WTP

Coastal erosion (abrasion):

Environmental degradation destroying mangrove treeHigh ocean waveLack of treatment structures

Impact of Climate Change(source: Ludwig. F, and Marcus

Moench) Water quality and health:

Higher temperature of surface water will increase algal blooms, microbial activity and bacterial population.Lack of proper sanitation, warmer climate will increase the risks of water-borne diseases.

Global warming will cause significant melting of glaciers, which will increase sea levels.

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14

FLOOD POTENTIAL AREAS IN WEST JAVA

Kab.Bekasi 7.226 Ha

Kab.Karawang 11.060

Ha

Kab.Subang2.710 Ha

Kab.Indramayu

16.119 Ha

Kab.Bandung

2.701 Ha

Kota Tasikmalaya

10 Ha

Kab.Tasikmalaya70,50 Ha

Future problemFuture problem

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2000: 6.178.955 Jiwa2005: 6.923.900 Jiwa2009: 7.073.527 Jiwa*2010: 7.867.006 Jiwa2015: 9.107.259 Jiwa2020: 10.190.304 Jiwa2025: 11.382.200 Jiwa

*Data Jawa Barat Dalam Angka 2009, BPS

Land-use change due to urbanization needs more water supply

Source: Brinkman J.J, Deltares 2011

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Climate Change - Trend analysis annual rainfall in Bandung basin, Period 1879-2007

Estimate of annual rainfall in Bandung basin, Period 1879-2007

0

500

1000

1500

2000

2500

3000

3500

1860 1880 1900 1920 1940 1960 1980 2000 2020

An

nu

al r

ain

fall

(mm

)

Annual basin rainfall

Period average

Source: Brinkman J.J, Deltares 2011

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Climate Change - Trend analysis average seasonal discharge in Nanjung Citarum

basin, Period 1997-2010

1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 20100

50

100

150

200

250

300

350

Dry SeasonTrend (Dry Season)Wet SeasonTrend (Wet Season)

YEAR

DIS

CH

AR

GE (

m3/s

)

Impact of climate change ?

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Climate Change - Trend analysis average seasonal dischage in Tomo Cimanuk basin,

Period 1999-2010

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 20100

50

100

150

200

250

Dry SeasonTrend (Dry Season)Wet SeasonTrend (Wet Season)

YEAR

DIS

CH

AR

GE (

m3/s

)

Impact of climate change ?

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Climate Change - Trend analysis average seasonal discharge in Tegal Datar Cimandiri

basin, Period 1999-2010

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 20100

5

10

15

20

25

30

35

40

Dry SeasonTrend (Dry Season)Wet SeasonTrend (Wet Season)

YEAR

DIS

CH

AR

GE (

m3/s

)

Impact of climate change ?

Water Resources Management Water Resources Management

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VISION: Optimal services, equitable and sustainable.

Irrigation service development, in order to support the national food production.

Raw water capacity development for domestic, municipal and industries, in order to support the health of community and regional economic development.

Water conservation and flood management, in order to increase the environmental quality and productive territory development.

Information system development, in order to increase the empowerment and community participation in the water resources management.

Grand Strategies:

2121

Improvement of Irrigation Management Performance

Improve efficiency:At the farm level: improve cropping pattern, crop type, water allocation procedure, and System of Rice Intensification (SRI).At the networks level reduce losses by: Rehabilitation, canal lining, flow control system.At the basin level, concept of reuse water.

Deliver water to the farmers on right quantity and right time improve service agreement, and water allocation system.Ease operation and reduced cost of O&M

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Measure Strategies of the Raw Water Capacity Development

Measure Strategies of the Raw Water Capacity Development

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Rehabilitation of the existing small lake (total identified is about 620)

Construction of Jatigede Reservoir (On going project)

The development of small reservoirs in the upstream of the river basin.

The development of field reservoir or canal storage in the downstream of the river basin.

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Water Conservation and Flood Control Management

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Watershed Management, to increase base flow and to reduce peak flood and erosion rate.

Land-use Regulation, to ensure that communities are not allowed to develop on flood plain

Flood control structure Mitigation, to reduce the effect of flood disaster on

communities: warning system, Strengthening buildings to be more resistant against

flood Changing crop cycle and cropping patent Economic diversification Food storage programs

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WS Citanduy

WS Ciwulan-Cilaki

WS Cisadea-Cibareno

WS Cimanuk-Cisanggarung

WS Cidanau-Ciujung-Cidurian-Cisadane-Ciliwung-Citarum

RESERVOIRS (DAMS) LOCATION PLAN

CIWIDEY Dam

1. Volume : 1,18 Juta M32. Inundation area : 10,16 Ha.3. Water Use : DMI for Kab/ Kota Bandung,-Cimahi, Irrigation, and Flood Retention4. Status : DED 20055. Cost of Const. : Rp. 72 Billion

SADAWARNA Dam

1. Volume : 13,5 Juta M32. Inundation area : 230 Ha.3. Water Use : DMI for Kab. Subang Flood Retention and Irrigation,4. Status : Sertifikasi (2009)5. Cost of Const. Rp. 225 Billion

PROPOSED OF KERTAJATI

INTERNATIONAL AIRPORT LOCATION

CIPANAS SAAT Dam

CIMETA Dam

1. Volume : 970.000 M32. Inundation area : 10,80 Ha.3. Water Use : DMI for Kab Bandung,, Flood Retention, and Irrigation4. Status : DED 20065. Cost of Const. : Rp. 147,5 Billion

1. Volume : 350.000 M32. Inundation area : 31 Ha.3. Water Use : DMI for Kab. Bandung, Flood Retention and Irrigation,4. Status : DED 20045. Cost of Const. : Rp. 25,5 Billion

CIKAPUNDUNG Dam

CITEPUS Dam

1. Volume : 696.000M32. Inundation area : 6,74 Ha.3. Water Use : DMI for Pelabuhan Ratu Sub District, Flood Retention and Irrigation4. Status : Sertifikasi (2009)5. Cost of Const. : Rp. 60 Billion

1. Volume : 2.037.025 M32. Inundation area : 13,82 ha.3. Water Use : DMI for Kec..Pangandaran,,Flood Retention and Irrigation,4. Status : DED (2007)5. Cost of Const. : Rp. 113,5 Billion.

1. Volume : 719.000 M32. Inundation area : 16,08 Ha.3. Water Use : DMI for Bandung / Cimahi, Flood Retention and Irrigation,4. Status : DED (2004)5. Cost of Const. : Rp. 113,5 Billion

SUKAWANA Dam

SUKAHURIP Dam

1. Volume : 1,4 Juta M32. Inundation area : 48,24 Ha.3. Water Use : DMI for Kertajati Aerocity., Flood Retention and Irrigation.4. Status : DED (2007)5. Cost of Const. : Rp. 50 Billion.

1. Volume : 340.000 M32. Inundation area : 11,19 Ha.3. Water Use : DMI for Kab./Kota Bandung, Flood Retention and Irrigation,4. Status : DED (2004)5. Cost of Const. : Rp. 61,71 Billion

CITARIK Dam

SENTOSA Dam

1. Volume : 10.000.000 M32. Inundation area : 42,5 ha.3. Water Use : DMI for Kab./Kota Bandung,Flood Retention and Irrigation,4. Status : DED (2007), Re-DED 2009 by BBWS5. Cost of Const. : Rp. 750 Billion.

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THE WATER SOURCES POTENTIAL SCHEME FOR BANDUNG AREA THE WATER SOURCES POTENTIAL SCHEME FOR BANDUNG AREA

EASTERN OF BANDUNG

WESTERN OF BANDUNG

S. Ciw

idey

S. C

isan

gkuy

S. C

itar

ik

S. C

ikap

undu

ngS. C

imah

i

S. C

imet

a

River

Plan of Dam

Existing Dam

DMI service’s area

Interbasin

S. C

ibat

arua

InterbasinWater TransferQ = 0,8 m3/det

Plan of Ciwidey DamVolume = 743.000 m3

Inundation = 7,53 HaStatus = DED 2005Const. Cost = Rp. 95.678.000.000,-

BANDUNG CITY

SOUTHERN OF BANDUNG

Plan of Cimeta DamVolume = 970.288 m3

Inundation = 10,80 HaStatus = DED 2006Const. Cost = Rp. 178.393.567.000,-

Plan of Sukawana DamVolume = 718.770 m3

Inundation = 40,70 HaStatus = DED 2004Const. Cost = Rp. 105.932.680.000,-

Plan of Cibatarua Dam Volume = 1 Juta m3

Inundation = 7 HaStatus = DED 2005 (APBN)Const. Cost = Rp. 750.000.000,000,-

(included Santosa Dam)

Plan of Cibatarua Dam Volume = 1 Juta m3

Inundation = 7 HaStatus = DED 2005 (APBN)Const. Cost = Rp. 750.000.000,000,-

(included Santosa Dam)

S. C

ilaki

Rencana 5 Wdk Kecil► Plan of Cikapundung Dam

Volume = 319.000 m3

Inundation = 15,29 HaStatus = DED 2004Const. Cost = Rp. 37.204.245.000,-

► Wdk CiawirukaStatus = Identifikasi

► Cipanengah 1, 2 dan 3.Status = Identifikasi

S. Citarum Plan of Citarik DamVolume = 307.468 m3

Inundation = 37,63 HaStatus = DED 2004 Const. Cost = Rp.90.346.303.000,-

Plan of Santosa DamVolume = 10.000.000 m3

Inundation = 42,5 HaStatus = DED 2007/Re DED 2009

Plan of Santosa DamVolume = 10.000.000 m3

Inundation = 42,5 HaStatus = DED 2007/Re DED 2009

SAMUDRA INDONESIA

S. Sagulin

gS. C

irata

S. Juanda

Skema Potensi SDA di Wil Cekungan Bandung-3

THE WATER SOURCES POTENTIAL SCHEME FOR WESTJAVA INTERNASIONAL AIRPORT TERITORY

( LOCATION AT KERTAJATI SUB DISTRICT OF MAJALENGKA DISTRICT)

S. Cipanas paeh

S. Cilebakjero

S. Ciba

rengk

ok

S. C

iman

uk

S. Cikujang

S. Cibalida

S. Cideres

S. Cikasarung

S. Cimurutud

S. CilutungS. Cipeles

S. Cigaruguy

Bd. Cariang = 600 Ha

PROPOSED OF WESTJAVA

INTERNATIONAL AIRPORT

Rencana Trase Air Baku

S. Cicacaban

S. C

iand

ana

S. Cipelang

Laut JawaLaut Jawa

S. C

ipan

assa

at

S. C

ipan

as

•

•

•

•

Bd. Rentang = 89.000 Ha

Sal. Rambatan

L = 5,25 km

Cipanas DamVolume = 120 Juta m3Genangan = 795 HaStatus = DD 2006Biaya Pemb. = Rp. 115 Milyar

Cipanas DamVolume = 120 Juta m3Genangan = 795 HaStatus = DD 2006Biaya Pemb. = Rp. 115 Milyar

Rencana Wdk CipelangVolume = 4,79 Juta m3Genangan = 189 HaStatus = Identifikasi 2005Biaya Pemb. = pm

Rencana Wdk CipelangVolume = 4,79 Juta m3Genangan = 189 HaStatus = Identifikasi 2005Biaya Pemb. = pm

Plan of Cipanassaat DamVolume = 1,59 Juta m3 Inundation = 53,37 HaStatus = DED 2007Const. Cost = Rp. 64,8 Billion

Plan of Jatigede DamVolume = 979,5 Juta m3Inundated area = 3.953 HaStatus = Constructed in 2007Const. Cost = Rp. 3.585 Billion

Plan of Jatigede DamVolume = 979,5 Juta m3Inundated area = 3.953 HaStatus = Constructed in 2007Const. Cost = Rp. 3.585 Billion

S. Cipelang

Situ Citamiang Luas = 14,3 Ha ; Luas baku = 31 Ha Areal diairi = 31 Ha ; Vol = 123.350 m3.Rehab & penataan = Rp. 2,5 Milyar

Rawa CimaneuhLuas = 27,9 Ha;Areal diairi = 20 Ha; Vol = 418.500 m3Rehab & penataan = Rp. 3 Milyar

Rawa Jawura Luas = 55 Ha ; Luas baku = 58 HaAreal diairi = 38 Ha ; Vol = 640.500 m3Rehab & Penataan = Rp. 4 Milyar

ConclusionConclusion

The existing problems mostly because of environmental degradation, compare with the climate change.Watershed management is the priority of the conservation activities.Increasing efficiency and water storage are good strategies for water resources development program.The impacts of climate change on water in West Java, still uncertainly, needs more research

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RecommendationsRecommendations

Subject of research:Climate change impacts on environmental and natural ecosystemsClimate change impacts on water quality and healthGroundwater potential and rechargeAutomatic flow control structures to increase efficiency of irrigation systemOptimal cropping patent and optimal water use for irrigation, based on the predictable seasonal river discharge as the impact of climate change. Conservation measures to increase infiltration rate by artificial recharge

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Thank YouThank You

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Juanda Dam Located in Citarum River

Juanda Dam Located in Citarum River

Salient Features :

Cathment Area : 4.500 Km2

Average Discharge : 175 m3/detSurface Area : 83 Km2

Storage Capacity : 3,6 x 109 m3

Effektive Storage : 2,5 x 109 m3

Type of Dam : Rockfill DamHigh of Dam : 105 mLength of Dam : 1.220 m

DAM PURPOSESPower Capacity : 215 MWService Irrigation Area : 296.000 HaWater Supply : 20 m3/detTourism

Cirata Dam Located in Citarum River

Cirata Dam Located in Citarum River

Salient Features :

Cathment Area : 4.119 Km2

Surface Area : 62 Km2

Storage Capacity : 2.162 x 109 m3

Effektive Storage : 7.96 x 106 m3

Type of Dam : Rockfill DamHigh of Dam : 125 mLength of Dam : 456.5 m

DAM PURPOSESPower Capacity : 500 MWTourism

Saguling DamLocated in Citarum River

Saguling DamLocated in Citarum River

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Salient Features :

Surface Area : 56 Km2

Storage Capacity : 9,82 x 106 m3

Effektive Storage : 6,9 x 106 m3

Type of Dam : Rockfill DamHigh of Dam : 97,5 mLength of Dam : 301,5 m

DAM PURPOSESPower Capacity : 700 MWTourism