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

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The Use of Drop-Structures to Increase the Dissolved Oxygen Level along the Cibarani Channel Jonathan Wijaya; Doddi Yudianto; Finna Fitriana
Journal of the Civil Engineering Forum Vol. 8 No. 1 (January 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (802.974 KB) | DOI: 10.22146/jcef.3603

Abstract

The Cikapundung river basin community uses the Cibarani channel as a drainage system and water source for fishing. However, the test result released on 9th November 2020 revealed that the channel’s water quality failed to reach the class II raw water standards due to various domestic waste discharges. This led to the performance of various studies to identify pollution control techniques by limiting the wastewater discharge and quality, controlling the intake discharge, and using baffles. The Cibarani channel has a drop-structure that can improve the water quality, though the effect has not been previously detailed. Therefore, this study was intended to comprehensively examine the effect of the drop-structure along the Cibarani channel to improve water quality conditions, specifically the Dissolved Oxygen (DO) parameter. This study employed the one-dimensional HEC-RAS software to simulate the hydrodynamic and water quality conditions along the Cibarani channel, and the drop-structure was modelled using two alternatives consisting of a vertical wall and a steep riverbed. Subsequently, the drop-structure fitted with a vertical wall gave a more plausible reaeration rate of 125 day-1 and Root Mean Square Error (RMSE) value of 0.50. The placement of a similar configuration before the first housing of the channel increased the DO concentrations by an average of 4.37 mg/L. This was followed by the modelling of another drop-structure after the first housing to increase the DO levels at the downstream part. Eventually, the combination of the two new drop-structures succeeded in increasing the DO concentrations along the Cibarani channel to 3.3 - 6.9 mg/L.
STUDI PENGELOLAAN AIR HUJAN DALAM RANGKA PENGEMBANGAN TAMAN KONSERVASI DI KOTA SAWAHLUNTO, SUMATERA BARAT Steven Kent; Doddi Yudianto; Finna Fitriana
JURNAL SUMBER DAYA AIR Vol 18, No 2 (2022)
Publisher : 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

Taman Konservasi Kota Sawahlunto merupakan area yang dikembangkan untuk kegiatan perlindungan tanaman serta aktivitas pariwisata. Kota Sawahlunto awalnya dibangun sebagai kota pendukung kegiatan pertambangan batu bara, sehingga taman konservasi mempunyai beberapa cekungan yang dapat digunakan sebagai kolam parkir banjir. Cekungan-cekungan tersebut dapat digunakan sebagai sarana dalam memenuhi kebutuhan penyiraman tanaman. Penelitian ini bertujuan untuk mengkaji ketersediaan air serta analisis banjir pada kawasan yang hendak dibangun. Area taman konservasi dibagi menjadi tiga kawasan berdasarkan ke-empat lokasi kolam tampungan, yaitu kawasan Taman Kandih, kawasan taman bagian utara, dan kawasan taman bagian selatan. Dalam studi ini, akan dilakukan analisis hidrologi serta analisis hidraulik. Pada analisis hidrologi, simulasi kapasitas tampungan dilakukan untuk menggambarkan jumlah air yang dapat dipakai setiap bulannya. Pada analisis hidraulik, program SWMM digunakan untuk memodelkan air hujan sebagai limpasan permukaan, mengestimasi dimensi saluran rencana, dan volume banjir tampungan. Hasil simulasi kapasitas tampungan menunjukan kebutuhan air penyiraman tanaman dapat terpenuhi seluruhnya. Namun, volume kolam yang tersedia jauh lebih kecil dibandingkan volume air, sehingga kolam akan limpas sepanjang tahun. Hasil pemodelan SWMM menunjukan dimensi saluran rencana dari 0,2 m x 0,2 m hingga 0,5 m x 0,5 m, mampu mengalirkan debit banjir dengan periode ulang 2 tahun, dengan tinggi jagaan sebesar periode ulang lima tahun. Studi ini dapat digunakan sebagai pedoman dalam pengembangan kawasan konservasi dalam rangka pemanfaatan kembali potensi lahan bekas pertambangan. Kata Kunci: Perencanaan Drainase, Konservasi Air, Simulasi Tampungan, SWMM, Taman Konservasi Sawahlunto
THE ASSESSMENT OF CITARUM RIVER WATER QUALITY IN MAJALAYA DISTRICT, BANDUNG REGENCY Finna Fitriana; Doddi Yudianto; S Sanjaya; Andreas F V Roy; Yong Chan Seo
Rekayasa Sipil Vol. 17 No. 1 (2023): Rekayasa Sipil Vol. 17 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.01.6

Abstract

Citarum River is one of the biggest rivers in Java Island and the primary source of Jakarta's water supply. Named the dirtiest river globally in 2013, the Indonesian government is committed to improving the Citarum River's water quality by 2025. However, the Majalaya District, the center of the textile industry area in the upstream part of the Citarum River, is indicated to have significantly contributed to the river pollution. Hence, it is essential to conduct a study to evaluate the water quality in the Citarum River, especially in the Majalaya District. The results showed a considerable decrease in water quality from upstream to downstream of the Citarum River in 2013-2021. Concurrently, it was also found that the factory effluent far exceeded the permissible limit.
OPTIMASI PERENCANAAN SISTEM DRAINASE KAWASAN INDUSTRI DI CIKARANG, KABUPATEN BEKASI, JAWA BARAT Angela Grace; Doddi Yudianto; Finna Fitriana
JURNAL TEKNIK HIDRAULIK Vol 13, No 2 (2022): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v13i2.712

Abstract

Pembangunan kawasan industri sebagai pusat kegiatan industri harus dilengkapi dengan sarana dan prasarana yang mendukung. Salah satunya adalah pembangunan kawasan industri di Cikarang, Kabupaten Bekasi, Jawa Barat. Studi ini bertujuan untuk merancang sistem drainase dan pengendalian banjir untuk menekan hidrograf banjir setelah pembangunan agar menyerupai kondisi eksisting saat sebelum dibangun. Studi ini dilakukan dengan menggunakan data hujan dari pos hujan Cikarang dan data hujan satelit GPM. Selanjutnya, analisis dilakukan dengan menggunakan dua metode, yaitu metode rasional dan pemodelan menggunakan program SWMM. Pada perencanaannya, sistem drainase kawasan dibagi menjadi dua saluran, yaitu saluran kiri dan kanan, yang keduanya dialirkan menuju saluran utama. Dimensi saluran direncanakan untuk dapat menampung curah hujan rencana periode ulang 2 tahun, dengan tinggi jagaan periode ulang 10 tahun. Berdasarkan hasil perhitungan dengan menggunakan metode rasional, dimensi yang diperoleh berkisar antara 0,2 x 0,2 m hingga 0,3 x 0,4 m untuk talang, 0,3 x 0,4 m hingga 1 x 1 m untuk saluran. Selanjutnya, dilakukan pemodelan menggunakan SWMM, di mana dimensi saluran dapat dioptimalisasi menjadi 0,3 x 0,3 m hingga 1 x 0,8 m. Hasil analisis menunjukkan bahwa perencanaan sistem drainase menggunakan pemodelan SWMM menghasilkan dimensi saluran yang lebih kecil dibandingkan dengan metode rasional. Disamping itu, terjadi peningkatan debit puncak dan volume limpasan, dengan angka peningkatan terbesar mencapai lebih dari 300% untuk curah hujan rencana periode ulang 2 tahun, karena adanya perubahan tata guna lahan akibat pembangunan kawasan. Untuk menanggulangi peningkatan tersebut, direncanakan dua kolam tampungan dengan luas 88 x 10 m yang dilengkapi dengan pompa.Kata Kunci:     Alih fungsi lahan, metode rasional, pengendalian banjir perkotaan, sistem drainase, SWMM
STUDY ON FLOOD CONTROL OF THE CILEUWIBANGKE RIVER DUE TO RESIDENTIAL AREA DEVELOPMENT IN BOGOR CITY, WEST JAVA Doddi Yudianto; Finna Fitriana; Albert Wicaksono; Theo Senjaya
JURNAL TEKNIK HIDRAULIK Vol 14, No 2 (2023): 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.v14i2.741

Abstract

ABSTRACTBogor City, renowned for its high rainfall value, has experienced rapid economic growth, leading to a substantial surge in population. This, in turn, has prompted extensive development, disrupting land use in the urban area. Consequently, effective area planning incorporating an adequate drainage system is imperative to mitigate flooding. The Cileuwibangke River, located south of Bogor City, traverses a residential area earmarked for conversion into commercial and industrial zones. Therefore, evaluating the floodwater level of the Cileuwibangke River is crucial, both in its existing state and post-construction. This study utilized daily data from the Gadog Rainfall Station and hourly data from the GPM satellite spanning from 2001 to 2020 for rainfall analysis. It revealed that several rain events exceeded the 2, 5, and 10-year return periods. Rainfall-runoff analysis showed that changes in land use resulted in a 35-36% increase in peak flood discharge and a 22-28% increase in runoff volume compared to the existing condition. The findings indicated that the normalization of the river section on the residential area side did not significantly lower the floodwater level, attributed to three broad-dimension culverts. Moreover, strengthening the river's bottom and banks is essential due to the observed hydraulic jump indication. Upstream riverbed protection can be achieved with a 35 m stretch of rock material. Keywords:       Bogor City, Cileuwibangke River, HEC-HMS, HEC-RAS, and Urban Flood ABSTRAKKota Bogor, dikenal dengan curah hujannya yang tinggi, mengalami pertumbuhan ekonomi yang tinggi sehingga menyebabkan peningkatan jumlah penduduk yang cukup pesat. Hal ini memicu pembangunan besar-besaran yang mengubah fungsi lahan di kawasan perkotaan. Oleh karena itu, perencanaan kawasan dengan sistem drainase yang memadai diperlukan untuk mencegah terjadinya banjir. Sungai Cileuwibangke, yang terletak di selatan Kota Bogor, mengalir melalui kawasan pemukiman yang akan dikembangkan menjadi kawasan komersial dan industri. Sehingga, perlu dilakukan evaluasi tinggi muka air banjir Sungai Cileuwibangke baik pada kondisi eksisting maupun setelah konstruksi. Studi ini menggunakan data harian Pos Hujan Gadog dan data jam-jaman satelit GPM dari tahun 2001 hingga 2020 untuk melakukan analisis curah hujan. Ditemukan bahwa beberapa kejadian hujan memiliki nilai lebih besar dari hujan rencana periode ulang 2, 5, dan 10 tahun. Berdasarkan analisis curah hujan-limpasan yang dilakukan, diketahui bahwa alih fungsi lahan mengakibatkan peningkatan debit banjir puncak dan volume limpasan masing-masing sebesar 35-36% dan 22-28% dibandingkan dengan kondisi eksisting. Hasil penelitian menunjukkan bahwa normalisasi ruas sungai di sisi pemukiman tidak menurunkan debit banjir secara signifikan, dikarenakan adanya tiga gorong-gorong berdimensi lebar pada kawasan tersebut. Selain itu, perlu dilakukan perkuatan dasar sungai dan bantaran sungai dikarenakan adanya indikasi loncatan hidraulik. Perlindungan dasar sungai dapat dilakukan di hulu dengan menggunakan material batuan sepanjang 35 m.Keywords:            Banjir Perkotaan, HEC-HMS, HEC-RAS, Kota Bogor, dan Sungai Cileuwibangke
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. 
Co-Authors Adidarma, Wanny Albert Wicaksono Andreas F. V. Roy Angela Grace Bobby Minola Ginting Doddi Yudianto Fiona, Megan Gao, Cheng Jonathan Wijaya Kent, Steven Li, Ren Muhammad Raul Zahran Wiryawardhana Polisar, Andrea S Sanjaya Sanjaya, S Sanjaya, Stephen Seo, Yong Chan Steven Kent Tandiono, Felix Theo Senjaya Wang, Qian Wijaya, Obaja Triputera Yong Chan Seo Yudha Primus Kristianto