MATEC Web of Conferences 147, 03010 (2018) https://doi.org/10.1051/matecconf/201814703010 SIBE 2017

Study on Water Resources Allocation for Kertajati, Jatitujuh, and Ligung Sub-Districts to Support the Development of West International Airport (BIJB) and Kertajati Aerocity Area

Yadi Suryadi2,3,*, Asrini Chrysanti1, Febya Nurnadiati1, Mohammad Bagus Adityawan2,3, and Arno Adi Kuntoro2

1Graduate School of Civil Engineering, Institut Teknologi , Jalan Ganesha 10, Bandung 40132,

2Water Resources Engineering Research Group, Institut teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia

3Water Resources Development Center, Institut teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia

Abstract. The Bandarudara Internasional Jawa Barat (BIJB) and Kertajati Aerocity are under construction and expected to be a center of economic activity supported by potential of natural resources and agriculture. They later will act as a driver of economic growth in , especially for surrounding area such as Kertajati, Jatitujuh and Ligung Sub-districts. As an affect of the the development of BIJB and Kertajati Aerocity, the water demand of surrounding area will increase. Therefore an analysis of water demand and availability is needed. This research supports by analyzing the water balance, water demand, and also water allocation using WEAP (Water Evaluation and Planing) software tool. Water balance of Cimanuk-Tomo, Cimanuk-Monjot, and Cilutung-Dam Kamun river are analyzed, water demand of the three sub-districts are also projected and become the inputs of the water allocation model. The result of WEAP model simulation shows that the Cimanuk River can meet the water demand of the three sub-districts until 2040.

1 Background and Kertajati Aerocity. Especially in the regions service areas in Kertajati Subdistrict (outside Region Aerocity), PT Bandarudara Internasional Jawa Barat (PT BJIB) Jatitujuh, and Ligung. Therefore it is necessary to analyze responsible for operating West Jawa Internasional Airport the water demand and identify the water resources to meet and developing Aerocity. In order to encourage the the total water demand, as well as the planning of water development of the Ciayumajakuning (- resources management in 3 (three) sub districts to support Indramayu--Kuningan) region as well as the the development and growth of BIJB and Kertajati increase of economic growth and public service especially Aerocity. With well managed water resources, water in the field of transportation, set in 2010 the development demand (domestic needs) can be fulfilled and sustainable and growth of the international airport of West Java and water resources management can support infrastructure Kertajati Aerocity. BJIB’s accessibility is guaranted by development and growth. This research using Water having both highway and railway connected Bandung, Evaluation and Planning (WEAP) system for water Kertajati, dan Cirebon. BJIB plans to ensure sufficient resources allocation, which is suitable for incorporates a capacity to meet future demand in air travel wich can demand priority and supply preference approach to drive handle 5 million passanger per year. the allocation of water from water supply. WEAP model Development and growth of BIJB and Kertajati using linear program algorithm, iterated to optimize Aerocity is implemented by developing Kertajati Urban demand and supply priorities. WEAP model has been Area which is integrated with the development and used in several water related researches across the world, growth of airport. The development of Kertajati Urban for example to determine the impact of a number of Area certainly affect Kertajati Area itself and also around. possible Development scenarios in Lake Tana Catchment, Among them is the Center for Local Activities Kertajati Ethiopia (Alemayehu et al. 2010) [7]. It is also used in with service functions as a commercial area and services, Western Africa to study the impacts of hydropower an integrated industrial area BIJB, the development of production due to land use and land cover changer under maritime Aerocity, Central Services Area Jatitujuh with climate changes (Obahoundje et al. 2017) [9]. service functions as housing development, services, industry, and agriculture Serving sub-district or village- level activities, and Central Services Area Ligung with 2 Location of the study area service function as security area, industrial development, The BJIB and Kertajati Aerocity is located in Majalengka social service, and agriculture serving sub district or some district, while the focus of this research are Kertajati, village. Therefore it is necessary to plan development and Jatitujuh and Ligung districts as shown in Figure 1. growth of three sub districts to support development and Majalengka is among the big districts such as Indramayu, growth of BIJB and Kertajati Aerocity Regions. Cirebon, Kuningan, Ciamis and . In urban Water demand increases along with population growth in and will continue to increase in line with the development and growth of BIJB

* Corresponding author: [email protected]

© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). MATEC Web of Conferences 147, 03010 (2018) https://doi.org/10.1051/matecconf/201814703010 SIBE 2017

areas te ater deand as been ulilled ro te ajalenga egency in te ort and out. or te ianu ier. out ajalenga egency generally do not ace robles in te ulillent o teir ater suly because te ater source is aailable by utiliing te ater srings. oeer te ulillent o ater deanddeands in te nortern region o ajalenga egency is still deried ro ground ater. e uantity o ground ater is not suicient and te uality o ater is also not good because it contains lie. ere are any ater sources utilied by unicial aterors ajalenga district. ater source utilied by unicial aterors ajalenga district are ilongrang rings isurian rings iadung rings ianeut rings ibulaan ring itaba rings igoong rings olo rings ilutung ier ianu ier and Jatigede eseroir. Based on Busines lan unicial aterors ajalenga istrict ro ubdistricts in ajalenga ne district ub districts tat ae been sered it te nuber o illages. In addition ajalenga district as soe oter otential surace ater in te or o lae located in iadung brella angiang and alagaerang illages. roundater based on eisting otential conditions in general te ortern and entral erritories Fig. 1. ocation o study area o ajalenga district ae te otential o good uality ground ater. 2.1 Hydroclimatology 2.3 Previous Study ajalenga and Kuningan districts are classiied as etlands it aerage annual rainall ranges beteen eeral studies ae been done to analye te ater . e ettest area o te region it balance in te study area. e total ater deand as been annual aerage rainall o is in te calculated in te reious study te total ater nortest. Aerage annual rainall in ajalenga regency reuireent is te aount o doestic ater deand ranges ro er year it an coering te needs o airort and residential actiities and aerage rainy day o days er ont. In industrial ater reuireents rojected as an integrated ajalenga regency rained eery ont it te igest industrial location. e estiated total annual rainall occurred in arc ic reaced . reuireent is resented in te Table 1. uring te eriod o te annual rainall in yes o rojected ater deand s ajalenga as te loest at er year in o. and te igest at er year in it an eeds aerage o years in year o er year. ere oestic . . . . . are to big rier ic becoe eart o big enoug Industry . . . . . ater reuireent to be utilied esecially or irrigation aintenance . . . . . tat is ianu ier and ilutung ier. In te air Irigation . . . . . teerature in ajalenga egency ranged ro . to otal . . . . . . degrees celcius. aiu air teerature occurred Table 1. otal ater deand ro reious study in ctober o . ile te iniu air teerature ource inal eort o easibility tudy o ianasaat occurred in August it a teerature o .. Aerage eseroir onstruction . arana Buana aya ind seeds ranged ro to nots er our it a to e result sos te aiu ontly aerage seed in arc o nots er our aing te discarge occurs in January it . s and te ajalenga egency nicnaed te ity o ind. iniu in eteber it . s it te aerage er year is . s. e ater aailability can be deterined as te deendable lo . aiu 2.2 Supply sources deendable lo occurs in ebruary it alue o . e ater suly syste in ajalenga egency consists s and te iniu is in ctober it alue o . o iing systes and nonied systes. iing systes s. ater Balance in te ianasaat atersed is are anaged by unicial aterors ile nonied reieed or local ydrological conditions it resect to systes are anaged by te counity. e areas tat te inlo o eac tributary and ater reuireents along ae been sered by ater ied systes are urban areas te rier cannel ater balance diagra or ater ostly located in ajalenga entral istrict ile non aailibility and ater deand ro to son ied areas counityanaged are located in in Figure 2. Based on te ater aailability analysis te

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ontly deendable lo is range beteen .. Baenas . e oc etod reers to te ater s it te aiu occurring in January and te balance in ic te total ater olue in te eart is iniu occurring in ctober. ile te ater ied only its circulation and distribution aries. oc reuireent o te ubatersed currently in is taes into account te olue o incoing rain out and . s sort ter in is . s ediu ter stored ater in te soil iniltration ercolation and in is . s and long ter in is . s. eaotransiration. e results o te ater deeloent analysis so tat ater resources netor o Kertajati Aerocity ill or te ater suly ro ianasaat ier in te ediu use iing syste so analysis o caacity and ater and long ter ill eerience deiciency esecially in te allocation is reuired to suort te lan. dry season. e sotare tat suorts te analysis is ater aluation and lanning yste A. e A algorit is ileented as a series o linear 3 Methodology rograing robles iterated oer deand and oncet o aerocity deeloent is an area in ic tere suly riorities. e algorit is docuented in ates are arious actiities suort eac oter it te actiities ieber et al. . A as been used in seeral ater related researces across te orld or eale to deterine te iact o a nuber o ossible eeloent scenarios in ae ana atcent tioia Aleayeu et al. . It as also used to evaluate Ethiopia’s policy of large dam construction in the Blue ile ier basin by siulating te iact o cliate cange scenario on te erorance o eisting and lanned ydrooer and irrigation scees cartney and ira . A oerates it te basic rincile o ater balance and can be alied to unicial and agricultural systes single rier basins or cole atersed systes. A siulates arious natural and engineering coonents o tis syste including rainall Fig. 2. ater balance runo relatie steady streas and groundater ource inal eort o easibility tudy o ianasaat iniltration ro rainall ectoral deand analysis ater eseroir onstruction . arana Buana aya conseration ater olicies and allocation riorities o te airort. ere are tree ain actiities on aerocity reseroir oerations eneration o ydrooer racing design naely core aeronautical actiities airort related ollution and ater uality Kerentana assessent And actiities and airort oriented actiities. Based on tis ecosyste reuireents. concet Kertajati aerocity as to scees o airort actiity tye o airort tere are actiities itin te aerocity and outside te aerocity. ereore te analysis 4 Results and discussion in tis study as conducted on bot areas itin te aerocity and outside. o allo ater allocation e need to calculate te 4.1 Projected water demand ater deand and suly on te location study. is e tree sub districts o te study area ae unction as study only tae into account te uantitatie actors Kertajati ocal Actiity enter it serice unction as tereore it is assued tat all te ater resources ro coercial and serice area integrated industrial area tree riers ae te sae uality dan able to use as a BIJB area urban deeloent aerocity and agriculture. ater resource. In tis researc te total ater deand o tose tree sub ere are tree stages o analysis used in tis districts is analyed includes ater deand o doestic researc rojection o ater deand ater reuireent acilities education acilities ealt acilities oice and ater distribution. rojected ater deand are acilities touris acilities trade and serice acilities intended to sere doestic acilities educational and industrial estates. acilities ealt oices touris andling and industry. rojection o ater is done based on ocal o eet te ater deand o eac actiity calculated egulation and atial lanning o ajalenga district. based on redictions eery year until . otal ater ater deand is calculated by considering te oulation deand is te aount o doestic ater deand ic grot rate o and ater reuireent coering te needs o airort and residential actiities and dayerson. e ratio o te oulation o Kertajadi industrial ater deand rojected as an integrated district and te nuber o orer in eac acilities and industrial location. ater reuireent or eac acilities son in Table 2. ater aailability ill be analyed using .J oc etod. .J. oc roosed a ontly ater balance siulation odel or te drainage region in Indonesia non as te oc lo siulation. is odel is seciically used or riers in Indonesia

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Table 2. ater demand for each facilities District Kertajati Jatitujuh Ligung Facilities Water Needs Water Needs Water Needs Ratio/Area Ratio/Area Ratio/Area (L/d/p) (L/d/p) (L/d/p) Education 10.09% 10 25.23% 10 22.93% 10 Health 7.94% 200 7.94% 200 10.64% 200 Office 6.17% 10 13.20% 10 17.80% 10 Industry 20% 60 20% 60 20% 60 Tourism 74.46 Ha 0.3 770.61 Ha 0.3 428.3 Ha 0.3 Trade and 1504.1 Ha 12,000 381.82 Ha 12,000 177.41 Ha 12,000 Service ource nalysis esult he total demand of three district can e seen from recent years untill proected years in in

Figure 3 t total ater demand ill reach s

Fig. 3. otal ater demand ource nalysis esult c Fig. 4. ater avaiility 4.2 Water avaibility ource nalysis esult

rom the survey results ieureum ae yesel ae nggrarahan ae arisi ae eli ae aura ae imaneuh ae itamiang ae icae ae eli 4.3 Water allocation ae can only e used during the rainy season ecause the n this study ater alance analysis of ertaati ater source are from rain ater o the analysis of ater atituuh and igung districts is conducted ased availaility is only done in points namely imanu data in the form of river netors lae points and ater omo iver imanuonot iver and ilitungam use allocation can e seen in the Figure 5 he ater amun iver ater availiility for each river shon in allocation for each district is classified into seven in Figure 4 accordance ith the previous analysis ater collection

for each class has een set previously Each allocation is given the value of percentage amount of ater consumed nconsumed ater ill e returned to the river he classification of ater allocation and percentage of ater consumed and ater retrieval can e seen in the Table 3 he ater source used in this ater allocation model is surface ater taen from the imanuonot iver his is done ith the folloing considerations  he location of ilutung iver is on the different side ith the study location and the river empties into imanu iver so it ill e more efficient if ater retrieval done in main river imanu iver a compared to maing channel from ilutung iver to study location  he result of ater availaility analysis in imanu omo iver is greater than the availaility of ater in the imanuonot iver hereas the imanu onot iver is located donstream of the imanu iver and ilutung iver catchments o it is assumed there are ater retrieval in the imanu omo iver range and imanuonot iver

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Table 3 ater calssification and percentage of ater consumed

 oever the availaility of imanu iver ater river is on the different side of the three districts and must e rectified after the atigede eservoir operates empties into imanu iver oever the river can ecause the availaility of imanu iver ater ill e an option ut the ater availaility record in the depend on the ater that the reservoir estimates river must e validated ecause the eisting data is  n addition although the location of the imanu not in accordance ith the conditions in the field onot iver more donstream ut closer to the  ater sources that can e used to meet ater location of the study demand in ertaati atiutuh and igung district are imanu iver imanuonot oever ater demand proection from to can e the availaility of ater in imanu iver must e seen in Figure 6 ased on the results of analysis using corrected after the atigede eservoir operates E imanu iver can meet the ater demand in ecause the availaility of ater in the river ill e these three sudistricts until greatly influenced y the flo of ater that floed reservoir  here is no ater source in ertaati atituuh and 5 Conclusions igung sudistricts that can meet the ater demand rom the results of studies it can e taen some of the three sudistricts conclusions as follos  n this study has identified potential ater resources  ater retrieval from ilutung iver to meet the in other areas that can e used to meet ater demand ater demand in ertaati atiutuh and igung in ertaati atituuh and igung districts district is less effective ecause the location of the

Fig. 5. E cheme

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Figure 6 roected ater demand  ased on the data otained the ater demand in the mpacts on ydropoer roduction in estern these three sudistricts can still e met up to frica MDPI y relying on the eisting river flo andarudara nternational aa arat out  euired data clarification especially river flo httpicoidensearah uly measurement data and other ater source potentials to support the results of studies that have een done

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