Study on Water Resources Allocation for Kertajati, Jatitujuh, and Ligung
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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 Java 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 Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia 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 West Java, 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 (Cirebon- resources management in 3 (three) sub districts to support Indramayu-Majalengka-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 Tasikmalaya. In urban Water demand increases along with population growth in Majalengka Regency 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 water demand as been fulfilled rom te ajalengka Regency in te ort and outh. or the Cimanu ier. outh ajalengka Regency generally do not face probles in the ulfillment of teir ater supply because te water source is aailable by utiliing te water springs. owever, te fulfillment of ater deanddemands in the nortern region of ajalengka Regency is still derived from ground ater. The quantity of ground ater is not sufficient and te quality of water is also not good because it contains lime. There are many ater sources utilied by unicial waterworks ajalengka district. ater source utilied by municial waterworks ajalengka district are Cilongkrang rings, isurian rings, iadung Springs, ihaneut Springs, ibulaan ring, itamba Springs, igowong prings, olom prings, ilutung Rier, Cimanuk River, and Jatigede Reservoir. Based on Busines lan municial waterworks ajalengka istrict rom 6 ubdistricts in ajalengka new district 11 ub- districts that have been served with the number of 7 villages. In addition, ajalengka district has some oter potential surface water in the form of lake located in Ciadung, mbrella angiang, and alagaerang villages. roundwater, based on eisting otential conditions, in general te ortern and entral Territories Fig. 1. Location of study area of ajalengka district have the otential of good quality ground ater. 2.1 Hydroclimatology 2.3 Previous Study ajalengka and Kuningan districts are classified as wetlands wit average annual rainfall ranges between eeral studies have been done to analye te water 2000 - 4000 m. he wettest area of te region with balance in te study area. he total water demand as been annual average rainfall of 3500 - 400 m is in te calculated in the preious study, the total water nortwest. Average annual rainfall in ajalengka regency reuirement is te amount of domestic water demand ranges rom 400 m-3, m er year with an covering te needs of airport and residential activities and average rainy day o days er month. In industrial water reuirements projected as an integrated ajalengka regency rained eery month with the highest industrial location. he estimated total annual rainfall occurred in arc 010 whic reached mm. reuirement is resented in the Table 1. During the eriod o -2012, te annual rainfall in Types of Projected ater demand m3s) ajalengka was te lowest at 1,953 m er year in 009 o. and the igest at 3, mm er year in with an eeds 2007 2010 2025 2030 2040 aerage of years in year of 2,723 m er year. here 1 omestic .1038 .0855 .3306 .3950 .7831 are 2 to) big rier which become heart of big enough 2 Industry .0000 .0213 .1150 .1400 .3211 water reuirement to be utilied esecially or irrigation 3 aintenance .0052 .0150 .0223 .0268 .0552 tat is Cimanuk iver and ilutung iver. In 011 te air 4 Irigation .0747 .1024 .2516 .3660 .4210 temperature in ajalengka Regency ranged rom 6.8 to Total .1837 .2242 .7195 .9278 .5804 29.3 degrees celcius. aximum air temperature occurred Table 1. Total ater demand rom revious study in ctober of 5.3°C, hile the minimum air temperature Source: inal eport of easibility tudy of ianasaat occurred in August wit a temperature of 2.7°C. Average eseroir onstruction PT. Sarana Buana aya, 006) wind seeds ranged rom to nots er our with a to The result shows the maximum montly average seed in arch o nots er our, making the discarge occurs in January with .021 3s and te ajalengka Regency nicknamed te City o ind. minimu in etember with .144 3/s, with te aerage er year is . 3s. he water availability can be determined as te deendable flow 80. aximum 2.2 Supply sources deendable flow occurs in ebruary wit alue of .505 3 The water supply system in ajalengka Regency consists m s and te minimum is in ctober ith alue of .106 3 of iping systems and non-pied systems. iing systems m s. ater Balance in te ianasaat watershed is are managed by unicial aterworks hile non-pied reiewed for local ydrological conditions with resect to systems are managed by te community. he areas tat te inflow of eac tributary and water reuirements along ave been sered by water ied systems are urban areas te river cannel water balance diagram for water mostly located in ajalengka Central istrict hile non- aailibility and water demand rom 007 to 040 shown pied areas community-managed) are located in in Figure 2. Based on the water aailability analysis, the 2 MATEC Web of Conferences 147, 03010 (2018) https://doi.org/10.1051/matecconf/201814703010 SIBE 2017 monthly deendable flow is range between .106-3.3 (Bapenas 2006).