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Flood Hazard Assessment Due to Changes in Land Use and Cover Supratman, Maman; Kusuma, Muhammad S. B.; Cahyono, Muhammad; Kuntoro, Arno Adi
Civil Engineering Journal Vol 10, No 12 (2024): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-12-04

Abstract

This study aimed to investigate the influence of land use changes on the occurrence of flood hazards in the Pondok Karya area, Jakarta, Indonesia. Landsat OLI 8 and 7 from 2002 to 2023 were analyzed with a supervised classification tool using Envi and ArcGIS to investigate land use changes over the period. Additionally, the HEC-HMS and HEC-RAS tools were utilized for hydrological and hydraulic assessments under 25 discharge return periods (Q25), using a daily rainfall dataset from 2004 to 2021. The flood hazard index was produced using statistical and GIS methodologies and was based on Neighbourhood Associations (NAs) after qualified hydraulic model performance, indicating a Nash 0.65–Nash-Sutcliffe model efficiency (NSE) value. The analysis revealed considerable alterations in land use and cover within the Pondok Karya watershed. Consequently, the percentage of urban areas surged 30%, whereas vegetative cover declined 24%. Additionally, bare land decreased 9%, and water bodies marginally increased 3%. This indicates a 10% increase in the peak flood river flow of Mampang, from approximately 90 m³/s to 100 m³/s within this period. Subsequently, the percentage of high-risk areas increased from 42.85% (six NAs) to 57.14% (eight NAs), whereas the percentage of low-risk areas decreased from 14.29% (two NAs) to 7.14% (one NAs). Moderate-risk areas also decreased from 42.85% (six NAs) to 35.71% (five NAs). The study found that despite vegetative cover exceeding 30%, the capacity of the Mampang River remained inadequate, and the risk of flooding increased with the impact of its conversion. Additionally, the soil properties and social intervention factors contributed to the performance of the inundation model. Our study underscores the need for further research to mitigate flood risks and advocate interventions such as reservoir construction or river normalization in the upper Mampang catchment area. This study is useful for both local and central governments, which act as decision-makers to reduce the risk of flooding. Doi: 10.28991/CEJ-2024-010-12-04 Full Text: PDF
The Effectiveness of Structural Mitigation to Flood Disaster Reduction in Tebet, Matraman, and Jatinegara Sub-District of Jakarta City Kesuma, Tri Nugraha Adi; Kusuma, Muhammad Syahril Badri; Farid, Mohammad; Kuntoro, Arno Adi; Rahayu, Harkunti Pertiwi
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 1 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i1.17486

Abstract

Floods are the dominant color of the interaction of human activities and natural mechanisms that occur every year in the city of Jakarta. Various efforts have been made to reduce flooding in Jakarta, but flooding is still the dominant color, especially on the banks of the Ciliwung River. On the banks of the Ciliwung River, Tebet, Matraman and Jatinegara sub-districts are the three areas that experienced the most severe overflows of the Ciliwung River. Flood mitigation efforts in these three areas have been carried out in the form of increasing the drainage capacity of the Manggarai Gate and normalizing the river in the form of dredging and construction of embankments. However, this effort is not optimal because the implementation of normalization is hampered by social conflicts. This paper discusses mitigation efforts in the form of normalization and combination with retention ponds which are carried out by simulating flooded areas. Completion of the normalization of the Ciliwung River is not the best solution to deal with flooding in Jakarta. The flood volume which usually occupies the flood area flows quickly due to changes in the geometry of the river and causes changes in the hydrograph peak and causes flooding in the downstream part of the study area causing an increase in inundation area in Manggarai up to 200%. On the other hand, the use of retention/storage ponds on limited land has been able to reduce flood inundation by 10%. Therefore, staging in the planning and construction of flood mitigation infrastructure needs to be considered and planned thoroughly.
Flood Modelling of Premulung River, Bengawan Solo Pangestu, Ferdi; Kuntoro, Arno Adi; Irianto, Eko Winar
Journal of Applied Agricultural Science and Technology Vol. 8 No. 1 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i1.183

Abstract

Premulung River or commonly known as Kali Premulung is one of many branches of Bengawan Solo River in its upstream area. This river pass through one of the most historical cities in Central Java, Surakarta. The overcapacity of this river leads to flood event that has a negative impact on humans. The purpose of this research is to analyze the Premulung River capacity and simulate the flood caused by rainfall design. The hydrological matter was analyzed using Hydrognomon and HEC-HMS while flood modelling was analyzed using HEC-RAS software one- and two-dimension (1D & 2D) simulation. Model calibrations were carried out based on historical flood events (depth, duration, and area of inundation) and local interview due to data limitation. Based on the simulation, the flood modelling shows that the current capacity of Premulung River cannot accommodate its peak discharge for two (Q2) and twenty years (Q20) return period flood. There are two main spots identified flooded due to Q2 flood with depth varies from 40 to 80 cm and duration from 4 hour to 7 hour. For Q20 flood, there are also two same spots identified flooded with depth varies from 1.2 m to 1.8 m and duration from 6 hour to 9 hour. The result of this study can be a reference for flood dike design in the future which still require further detailed investigation.
Analisis Program Preservasi Jalan Terdampak Banjir Menggunakan Model Markov Chain aulia, yoga bimo; Frazila, Russ Bona; Kuntoro, Arno Adi
Jurnal Teknik Sipil Vol 30 No 2 (2023): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2023.30.2.14

Abstract

Abstrak Dalam beberapa tahun terakhir, banjir telah menyebabkan gangguan pada sistem pengelolaan jalan dengan meningkatkan biaya rehabilitasi secara signifikan. Pada penelitian ini dilakukan analisis pengaruh banjir, lalu lintas dan riwayat penanganan terhadap deteriorasi kondisi perkerasan jalan dimasa akan datang. Analisis dilakukan pada semua ruas jalan nasional di provinsi Bengkulu. Berdasarkan MPT yang dihasilkan, kondisi kategori lalu lintas mempengaruhi tingkat penurunan maupun kenaikan kondisi perkerasan dimana lalu lintas tinggi memiliki tingkat penurunan kondisi perkerasan lebih tinggi daripada lalu lintas sedang maupun lalu lintas rendah. Kondisi antara segmen banjir dan tidak banjir juga berbeda dalam perubahan kondisi perkerasan dimana segmen banjir tingkat penurunan kondisi perkerasan lebih cepat dari segmen tidak banjir. Pada analisis perubahan kondisi perkerasan di masa akan datang, perbandingan jumlah keputusan penanganan yang diberikan pada Markov Chain probabilitas tertinggi dibandingkan dengan IRMS V.3 menunjukan hasil yang berbeda, dimana pada Markov Chain penurunan kondisi perkerasan baik IRI maupun PCI lebih cepat sehingga lebih sering dilakukan penanganan rehabilitasi daripada menggunakan IRMS V.3 yang penurunan kondisi jalan cendrung lebih lambat. Kata-kata Kunci: Banjir, deteriorasi, IRI, IRMS V.3, markov chain, PCI. Abstract In recent years, floods have disrupted the road management system by significantly increasing rehabilitation costs. In this study, an analysis of the flooding’s effect, traffic and maintenance history on the deterioration of pavement conditions in the future was carried out. The analysis was carried out on all national road sections in Bengkulu province. Based on the resulting MPT, traffic category conditions affect the level of decrease or increase in pavement conditions where high traffic has a higher rate of decline in pavement conditions than medium traffic and low traffic. The conditions between the flooded and non-flooded segments are also different in terms of changes in pavement conditions where the flooded segment has a faster rate of decline than the non-flooded segment. In the analysis of future deterioration of pavement conditions, a comparison of the number of treatment decisions given to Markov Chain has the highest probability compared to IRMS V.3 showing different results, where on Markov Chain the deterioration of pavement conditions, both IRI and PCI, is faster so that rehabilitation is carried out more frequently. rather than using IRMS V.3 which tends to decrease road conditions more slowly. Keywords: Deterioration, flooding, IRI, IRMS V.3, markov hain, PCI  
Study of Flood Risk Assessment on Banyumas and Cilacap District in Downstream Serayu River Basin, Indonesia Kirana, Pratita Hana; Farid, Mohammad; Bagus Adityawan , Mohammad; Kuntoro, Arno Adi; Widyaningtyas, Widyaningtyas
Jurnal Teknik Sipil Vol 30 No 2 (2023): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2023.30.2.2

Abstract

Abstract. Floods due to the Downstream Serayu River overflow inundate agricultural land and houses in parts of Banyumasand Cilacap district every year. Based on the classification of flood hazard level referring to Chief of BNPBRegulation Number 2 the Year 2012 on General Guidelines for Assessment of Disaster Risk, some location pointsexperienced a high level of flood hazard (>1.5 m). The objective of this study is to develop a flood risk map by usingGIS. Flood hazard assessment uses the HEC-RAS 5.0.6 two-dimensional model, verified with field observation data.The river discharge is obtained from hydrological calculations, while the tidal component is obtained usingMATLAB-LP Tides BIG. River geometry uses river cross-section from field measurement data for hydraulicmodeling combined with MERIT DEM as its banks. The capacity level also refers to the BNPB Number 2 the Year2012. In this study, BNPB and PUPR parameters are used. The vulnerability component refers to a 2014 study fromthe Ministry of Public Work and Housing (PUPR) Indonesia. The 50-year flood return period shows that the totalarea of risk flooded areas in the Downstream Serayu River Basin is 6.22 km2, while high-risk flooded areas are 2.2 km2. Keywords: Flood risk, HEC-RAS 2D, GIS, MATLAB–LP Tides BIG, MERIT DEM Abstrak. Banjir akibat luapan Sungai Serayu Hilir setiap tahun menggenangi lahan pertanian dan perumahan di sebagianwilayah Kabupaten Banyumas dan Cilacap. Berdasarkan klasifikasi tingkat bahaya banjir mengacu padaPeraturan Kepala BNPB Nomor 2 Tahun 2012 tentang Pedoman Umum Pengkajian Risiko Bencana, beberapa titiklokasi mengalami tingkat bahaya banjir tinggi (>1,5 m). Tujuan dari penelitian ini yaitu mengembangkan petarisiko banjir dengan menggunakan SIG. Pemodelan banjir menggunakan model dua dimensi HECRAS 5.0.6, yangdiverifikasi dengan data observasi lapangan. Debit sungai diperoleh dari perhitungan hidrologi, sedangkankomponen pasang surut diperoleh dari perhitungan menggunakan MATLAB-LP Tides BIG. Geometri sungaimenggunakan penampang sungai dari data pengukuran lapangan untuk pemodelan hidrolik yang dikombinasikandengan MERIT DEM sebagai bantarannya. Tingkat kapasitas juga mengacu pada Peraturan Kepala BNPB Nomor2 Tahun 2012. Dalam penelitian ini digunakan parameter BNPB dan PUPR. Komponen kerentanan mengacu padastudi tahun 2014 dari Kementerian Pekerjaan Umum dan Perumahan Rakyat (PUPR) Indonesia. Periode ulangbanjir 50 tahun menunjukkan bahwa total luas area yang berisiko banjir di DAS Serayu Hilir sebesar 6,22 km2,sedangkan area dengan tingkat risiko banjir tinggi sebesar 2,2 km2. Kata-kata Kunci: Risiko banjir, HEC-RAS 2D, SIG, MATLAB–LP Tides BIG, MERIT DEM
Analisis Ancaman Banjir pada Sistem Drainase Banger Lama, Kota Pekalongan: Pengaruh Faktor Hujan, Kenaikan Muka Laut, dan Penurunan Tanah Huseiny, Mohammad Iqbal; Kuntoro, Arno Adi; Nugroho, Eka Oktariyanto; Farid, Mohammad; Nurmaulia, Sella Lestari
Jurnal Teknik Sipil Vol 31 No 3 (2024): Jurnal Teknik Sipil - Edisi Desember
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2024.31.3.8

Abstract

Abstract The coastal areas of Pekalongan City face a significant threat due to flooding and tidal surges. The low, flat topography complicates the management of drainage systems, given the relatively gentle land slope. Flooding incidents frequently occur in various parts of Pekalongan City. Furthermore, the global rise in sea levels and land subsidence in the region exacerbate this issue. This study aims to model the drainage system, considering factors such as rainfall, sea level rise, and land subsidence in Pekalongan City. The modeling is conducted by integrating 2D and 1D models using the Personal Computer Storm Water Management Model (PCSWMM) software. The modeling results encompass three parameters: flood depth, flood velocity, and flood duration. Subsequently, a flood hazard map is developed based on the Flood Hazard Index, incorporating these three parameters. Recommendations to address this issue include constructing embankments and flap gates upstream in flood-affected areas, as well as modifying the drainage system to enable gravity-driven water flow downstream without the use of pumps. However, it is essential to note that these recommendations may not be effective in scenarios involving significant land subsidence. This research is anticipated to assist stakeholders in making informed decisions regarding the management of the drainage system in Pekalongan City. Keywords: Drainage, PCSWMM, flood, sea level rise, land subsidence
Kajian Pengendalian Banjir Kali Bekasi, Kecamatan Babelan, Kabupaten Bekasi, Provinsi Jawa Barat Yasinta, Nur Laili; Kuntoro, Arno Adi; Alfajar, Gilang; Rahman, Irfie Lutfiah Aulia
Innovative: Journal Of Social Science Research Vol. 5 No. 3 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i3.18867

Abstract

Kecamatan Babelan merupakan salah satu wilayah di Kabupaten Bekasi yang sedang berkembang dalam sektor industri dan properti. Namun, terdapat berbagai macam permasalahan yang salah satunya adalah banjir yang diakibatkan oleh meluapnya Kali Bekasi. Tinggi banjir yang terjadi berkisar antara 20-100 cm. Banjir tersebut sering kali menghambat aktivitas masyarakat setempat dan dapat menyebabkan kerugian fisik dan material. Oleh karena itu, diperlukan solusi yang dapat mereduksi banjir yang terjadi karena luapan Kali Bekasi. Pemodelan banjir dan analisis hidraulika dalam tugas akhir ini dilakukan dengan dan bantuan perangkat lunak HEC-RAS 6.5 dan menggunakan debit rencana periode ulang 20 tahunan sebesar 559.79 m3/s. Terdapat tiga skenario alternatif solusi yang dimodelkan yaitu normalisasi, tanggul, dan normalisasi + tanggul. Dengan mempertimbangkan efektivitasnya, dipilih alternatif solusi berupa normalisasi + tanggul. Normalisasi yang dilakukan adalah dengan melebarkan alur Kali Bekasi selebar 40 meter dan tanggul yang digunakan adalah jenis sheet pile. Kombinasi dari normalisasi dan pembangunan tanggul diharapkan dapat menjadi solusi dari permasalahan banjir di Kabupaten Babelan akibat luapan Kali Bekasi.
THE PERSPECTIVE OF FLOOD MITIGATION USING ROLE-PLAYING AND ORGANIZATIONAL BEHAVIOUR (OB) FROM INTEGRATED WATER RESOURCE MANAGEMENT CLASS: HOW IS OUR GOVERNMENT ROLE? GEDEBAGE STUDY CASE Soeharno, Agung Wiyono Hadi; Nugroho, Eka Oktariyanto; Syakira, Hana; Putri, Shasha; Layaliya, Hannah; Pradoto, Rani; Yuherdha, Angga; Kuntoro, Arno Adi; Nurkhaerani, Fatma; Roesbianto, Azman Syah Barran
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 3 (2024): Volume 7 No 3 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i3.30753

Abstract

Indonesia rentan terhadap banjir, diperburuk oleh perubahan iklim. Mitigasi banjir menjadi fokus utama pemerintah, namun implementasinya menghadapi tantangan. Penelitian ini menganalisis pengaruh organizational behavior (OB) terhadap peran satuan kerja pemerintah dalam mitigasi banjir di Gedebage, Bandung. Penelitian menggunakan simulasi role-playing dengan mahasiswa magister sebagai responden yang berperan sebagai pejabat di BBWS Citarum dan Bappenas/Bappeda. Hasil analisis korelasi menunjukkan hubungan positif signifikan antara variabel-variabel OB dengan kepuasan kerja, dan antara kepuasan kerja dengan kapasitas organisasi dalam mengurangi risiko banjir. Kepemimpinan memiliki korelasi terkuat dengan kepuasan kerja. Konflik menjadi aspek OB dengan persentase terendah, mengindikasikan perlunya perhatian lebih dalam manajemen konflik. Peningkatan kepuasan kerja melalui penerapan prinsip OB dapat berkontribusi pada peningkatan kapasitas organisasi dalam mitigasi banjir. Penelitian lanjutan disarankan untuk melibatkan pengumpulan data lapangan dan memperluas lingkup penelitian.
KAJIAN LAJU INFILTRASI PADA LERENG YANG TERTUTUP ABU VULKANIK BERDASARKAN EKSPERIMEN SKALA LABORATORIUM Nugroho, Joko; Soekarno, Indratmo; Yunita, F Tata; Kuntoro, Arno Adi
JURNAL SUMBER DAYA AIR Vol 18, No 1 (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.v18i1.744

Abstract

Indonesia has 129 active volcanoes; therefore, the volcanic-related disasters risk is relatively high. Lahar flood is a secondary post-eruption disaster, which is triggered by the rainfall due to the movement of volcanic material by the runoff. After the eruption, there will be some significant changes in the watershed characteristics, especially the land cover, slope, and eruption material. This condition increases the possibility of the lahar flood events. Several studies have indicated an increase in runoff due to volcanic ash deposits on slopes. In this regard, the aim of this research is to understand the effects of volcanic ash layer on the slope on the infiltration rate. The physical model laboratory in the form of a laboratory-scale demonstration plot (demplot) were used, where the parameters reviewed include the slope, the volcanic ash thickness, and the rainfall intensity. The results indicate that the infiltration rate on the slopes covered with volcanic ash decreases with the average decrease in the ratio of infiltration to total rainfall about 1.6% per 1 cm thickness of the volcanic ash layer. In addition, the decrease in infiltration rate per 1 cm thickness of volcanic ash on a slope with a slope of 80 was higher (2.3%), compared to a slope of 150 (0.7%). The Philip's infiltration model fits better with the actual measurement data than the Green-Ampt one. The significant parameter in influencing the infiltration rate of the volcanic ash layer with Philip's model based on sensitivity analysis is sorptivity.Keywords: Infiltration rate, Philip, Green-Ampt, volcanic ash, physical model test