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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Sinergi Jurnal Rekayasa Konstruksi Mekanika Sipil JURNAL TEKNIK HIDRAULIK JURNAL SUMBER DAYA AIR Journal of the Civil Engineering Forum
Fitriana, Finna
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Investigation of Deoxygenation Rate Determination in Cikakembang River, West Java, Indonesia Fitriana, Finna; Yudianto, Doddi; Polisar, Andrea; Sanjaya, S
Journal of the Civil Engineering Forum Vol. 10 No. 1 (January 2024)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.8377

Abstract

Cikakembang River, a tributary of Citarum River, is situated in the densely populated Majalaya District, renowned for textile production. Direct discharges of domestic and industrial pollutants into the river contribute to substantial pollution, making it crucial to manage pollution levels. This implies that controlling pollution is crucial, as it significantly impacts the condition of Citarum River, already infamous as one of the world most polluted rivers. A key indicator for assessing river water quality is Biological Oxygen Demand (BOD), representing the oxygen required for microorganism-mediated decomposition. This parameter is influenced by deoxygenation rate, denoted as kd. Therefore, this study aimed to analyze the most suitable kd value for Cikakembang River using various empirical methods, including Simple, Fujimoto, Sawyer, Thomas, Fair, and Hydroscience. The result showed that Thomas method provided the most accurate prediction for BOD concentration of the river. In rainy season, Root mean square error (RMSE), mean absolute percentage error (MAPE), and coefficient of determination (R2) values were 0.542, 0.035, and 0.981, respectively, and in dry season, the values were 0.117, 0.009, and 0.999. Additionally, kd value effectively simulated the river water quality using HEC-RAS, yielding satisfactory results. RMSE, MAPE, and R2 values for BOD concentration were 3.551, 0.162, and 0.331 in rainy season and 1.071, 0.100, and 0.812 in dry season. Finally, the modeling result showed that Cikakembang River did not meet the Class 2 Water Quality Standard during both rainy and dry seasons. This finding is critical, as it underscores the severity of the pollution problem in the river and the urgent need for comprehensive and effective management strategies to improve its water quality.
Water Quality Modelling with Industrial and Domestic Point Source Pollution: a Study Case of Cikakembang River, Majalaya District Kent, Steven; Yudianto, Doddi; Gao, Cheng; Fitriana, Finna; Wang, Qian
Journal of the Civil Engineering Forum Vol. 10 No. 2 (May 2024)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.11807

Abstract

Rapid industrial development is one of the leading causes of environmental degradation. The textile industries and the domestic activities in Majalaya District produce wastewater directly discharged into the Cikakembang River. As a result, the Cikakembang River’s water quality has decreased to the point that the water quality cannot be used for daily needs. This study modeled three main parameters in water quality modelling, namely Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). Using MATLAB, the three-water quality governing equations originating from the Advection-Dispersion Equation were solved using the Runge Kutte-4 discretization scheme. The numerical modelling was carried out along 2.36 km of the Cikakembang River. All water quality coefficients, such as the DO Saturation (DOsat), the Reaeration Rate (ka), the Dispersion Coefficient (D), the Deoxygenation Rate (kd), and the Decomposition Rate (kc), for the Cikakembang River were estimated using equations developed by existing studies. The estimation of ka and D coefficients requires hydraulic parameters, which in this study were estimated using the HEC-RAS simulation. Meanwhile, kd and kc values were obtained from the calibration and verification process. The Relative Root Mean Square Error (RRMSE) objective function was used to evaluate the results of water quality modelling at three sampling points. In the calibration process, the resultsof water quality modelling produced RRMSE values for the DO, BOD, and COD parameters of 1.99%, 0.36% and 0.92%, respectively. Meanwhile, for the verification process, the RRMSE values for the DO, BOD, and COD parameters are 1.95%, 1.02% and 1.86%. All water quality parameters produce small RRMSE values in the calibration and verification processes. Hence, the water quality model created has good accuracy and stability.
Cikakembang River Restoration from the Perspective of Numerical Modelling Kent, Steven; Yudianto, Doddi; Gao, Cheng; Fitriana, Finna; Wang, Qian
SINERGI Vol 29, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.2.020

Abstract

The poor condition of the Citarum River demands more significant pollution control. One alternative for controlling pollution can be limiting the amount of wastewater entering one of the tributaries of the Citarum River, namely the Cikakembang River. This study is a follow-up study that will model heavy metal parameters in the Cikakembang River. Data collection was carried out six times, where the heavy metal parameter detected was copper. Numerical modelling for copper parameters was carried out using MATLAB software with the Runge Kutte-4 discretisation scheme. The study location covers 2.36 km upstream of the Cikakembang River, with 12 textile industry wastewater disposal points. Numerical modelling results for copper parameters show a settling rate of heavy metal particles of 40 day-1, with a maximum RRMSE value of 9.97%. Combining the water quality models for organic and heavy metal parameters created, pollution control simulations can be run in both seasons. The pollution control scenario aims to find the maximum amount that enters the Cikakembang River without passing the class four river water quality standards. The selection of the standard is based on the use of Cikakembang River water, namely for irrigation purposes. Based on the results of pollution control simulations, the pollutant carrying capacity for BOD, COD and copper parameters in the Cikakembang River is 199.43 kg/day, 1103.80 kg/day and 4.06 kg/day, respectively.
Studi Pemanfaatan Curah Hujan Bulanan Satelit GPM di Kawasan Bandung Raya dengan Validasi Silang Monte-Carlo Sanjaya, S; Yudianto, Doddi; Adidarma, Wanny; Fitriana, Finna
Jurnal Rekayasa Konstruksi Mekanika Sipil Vol 5 No 1 (2022): Volume 5 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Katolik Santo Thomas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/jrkms.v5i1.1804

Abstract

Keterbatasan sebaran dan jumlah pos penakar hujan dapat diatasi pengukuran hujan berbasis satelit. Seiring perkembangan teknologi, pengukuran hujan berbasis satelit, seperti GPM menunjukkan akurasi dan cakupan yang semakin membaik. Tentunya penggunaan hujan satelit ini juga perlu disertai dengan proses validasi berupa koreksi yang semakin mampu meningkatkan performanya. Banyak studi evaluasi dan koreksi data satelit telah dilakukan, hanya ada studi terbatas yang telah dilakukan di Indonesia. Oleh karena itu, studi ini bermaksud untuk mengevaluasi performa data hujan berbasis satelit (GPM IMERG) dan melakukan koreksi dengan metode validasi silang Monte-Carlo di Bandung Raya. Secara spesifik, studi ini menitikberatkan pada perbandingan antara data GPM dan pos hujan melalui analisis statistik untuk hujan bulanan. Hasil menunjukkan bahwa, data GPM mampu mendeteksi pola hujan bulanan dengan baik. Data bulanan tersebut dikelompokkan berdasarkan musimnya dan menghasilkan korelasi hujan musim kering yang lebih baik pada musim basah. Koreksi dengan MCCV dengan simulasi 1.000 kali berdasarkan musim tersebut menunjukkan peningkatan performa rata-rata sebesar 70% untuk bias relatif, dan 30% untuk RMSE, di kawasan Bandung Raya.
Analysis of Cikakembang River Water Quality Using the Pollution Index, STORET, and CCME-WQI Methods Fitriana, Finna; Yudianto, Doddi; Seo, Yong Chan
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 2 (2025): July 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i2.485-496

Abstract

River pollution is a significant environmental issue driven by urban growth and industrialization. The Cikakembang River, a tributary of the Citarum River in the Majalaya industrial area, receives wastewater from densely populated residential areas and textile manufacturing industries. Accurate assessment and monitoring of surface water quality are crucial to ensure its safe utilization. This study investigates the the Cikakembang River's water quality using the Pollution Index, STORET, and CCME-WQI methods, evaluating 14 water quality parameters across nine sampling locations during both wet and dry seasons to capture seasonal differences. The results reveal that the river fails to meet Class II water quality standards as outlined in Government Regulation No. 22 of 2021. While the Pollution Index classified contamination as mild to moderate, both STORET and CCME-WQI consistently indicated severe pollution across all sites and seasons. These findings suggest that STORET and CCME-WQI provide a more comprehensive assessment of pollution severity than the PI method, which may underestimate cumulative water quality degradation. This study highlights the urgent need for enhanced pollution control measures and stricter regulatory enforcement to mitigate further degradation of the Cikakembang River and improve its long-term sustainability. 
The Evaluation of Water Loss in The Western North Tarum Irrigation Channel Tandiono, Felix; Yudianto, Doddi; Li, Ren; Ginting, Bobby Minola; Wicaksono, Albert; Fitriana, Finna; Fiona, Megan
JURNAL TEKNIK HIDRAULIK Vol 15, No 1 (2024): Jurnal Teknik Hidraulik
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v15i1.790

Abstract

The Western North Tarum Irrigation channel plays a crucial role in supplying water to irrigated agricultural areas. However, it encounters challenges in ensuring adequate water delivery to all channel segments. This research assesses water loss during the distribution process in the Western North Tarum Irrigation channel, focusing on the evaluation of channel capacity and the impact of suboptimal water management on water loss. The study employs the HEC-RAS model, a hydraulic system analysis tool, to evaluate the channel’s capacity and simulates its behavior under various discharge conditions. The evaluation reveals that two channel segments, B.TUB 13 and B.TUB 25, have exceeded their capacity limits, resulting in overflow. Sedimentation downstream, particularly in these segments, exacerbates the issue by altering the channel slope and impeding water flow. This research identifies poor water distribution management as a significant factor contributing to water loss in the irrigation channel. Inadequate scheduling and the absence of proper water measurement tools result in instances of overwatering or underwatering in some areas. The lack of monitoring and control in the irrigation system hampers the detection of uncontrolled flow in the channels, leading to substantial water loss and inefficient water use. This research underscores the importance of evaluating and maintaining irrigation channel capacity to prevent overflow and water loss. Furthermore, it emphasizes the significance of effective water management to achieve more efficient water distribution and irrigation. Addressing these challenges is crucial for ensuring the long-term sustainability of irrigated agriculture in the Western North Tarum Irrigation area.Keywords: HEC-RAS, Irrigation Channel, Water Distribution, Water Loss, Western North Tarum
STUDI PENGELOLAAN AIR HUJAN DALAM RANGKA PENGEMBANGAN TAMAN KONSERVASI DI KOTA SAWAHLUNTO, SUMATERA BARAT Kent, Steven; Yudianto, Doddi; Fitriana, Finna
JURNAL SUMBER DAYA AIR Vol 18, No 2 (2022)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v18i2.820

Abstract

Sawahlunto Conservation Park is an area developed for plant protection and tourism activities. The Sawahlunto city was initially built to support coal mining activities, so the conservation park has several basins that can be used as flood parking ponds. These basins can be used to meet the needs of watering plants. The study is used to examine the water availability and flood analysis at the area to be built.  The conservation park is divided into three areas based on the four reservoirs location: the Kandih Park area, the northern and the southern part of the parking area. In this study, hydrologic and hydraulic analyses will be conducted. In the hydrological analysis, simulations of reservoir capacity are carried out to describe the amount of water that can be used every month. In the hydraulic analysis, SWMM program is used to model rainwater as surface runoff, estimate the planned channel dimensions, and reservoir flood volume. The reservoir simulation results show that the water needs for watering plants can be fully met. However, the available storage ponds have a much smaller volume than the rainfall volume, so the pond will run off throughout the year. The SWMM modeling results show that the channel dimensions from 0.2 m x 0.2 m to 0.5 m x 0.5 m, can drain flood discharge with a two-year return period, with a freeboard five-year return period. This study can be used as a guideline for developing conservation areas in reusing the potential of ex-mining land. Keywords: Conservation Park of Sawahlunto, Drainage Design, Rainfall Management, Reservoir Simulation, SWMM
PREDIKSI DAMPAK PERUBAHAN TATAGUNA LAHAN TERHADAP DEBIT LIMPASAN, STUDI KASUS: GEREJA RANCASARI Wijaya, Obaja Triputera; Yudianto, Doddi; Fitriana, Finna; Sanjaya, Stephen
JURNAL SUMBER DAYA AIR Vol 20, No 2 (2024)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v20i2.900

Abstract

Flooding is one of the most frequent natural disasters in Indonesia. Based on data, as of 2024, there have been 137 cases of flooding incidents. One of the causes of flooding, particularly in urban areas, is due to land use change. This study examines the impact of land use changes on runoff discharge in a Church area in the Bandung City. Additionally, this study investigates the effect of the development of this area on flood water levels in the Riung channel, which serves as an outlet channel. In this study, modeling is conducted using the SWMM model. The study utilizes data from the BMKG Bandung and GPM satellite rainfall data from 2001 to 2022 for rainfall analysis. The results indicate that in the study area, the duration of extreme rainfall producing maximum discharge is rainfall lasting for 7 hours. As a result of the church development, runoff discharge increases by 26.3 – 34.4% across various return periods. For time to peak, there is no significant change in conditions before and after the area is developed. This is due to area is relatively small, resulting in a relatively shorter concentration time. Based on the hydraulic analysis, the Riung channel is still able to accommodate additional runoff generated due to development, leaving a freeboard height of 4.5 cm for a 10-year return period. However, based on observations, special attention is needed regarding the issue of sedimentation and trash, which often causes backflow in several segments of the trenches.Keywords:runoff, land use change, urban drainage, SWMM, Bandung
Co-Authors Adidarma, Wanny Albert Wicaksono Bobby Minola Ginting Doddi Yudianto Fiona, Megan Gao, Cheng Kent, Steven Li, Ren Polisar, Andrea Sanjaya, S Sanjaya, Stephen Seo, Yong Chan Tandiono, Felix Wang, Qian Wijaya, Obaja Triputera