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KOMBINASI PREDIKSI VOLUME SEDIMEN MENGGUNAKAN METODE HECRAS-USLE UNTUK MENDUKUNG KONSERVASI DAS LAMBIDARO PALEMBANG, SUMATERA SELATAN Masri nur Sultan; Mohammad Farid; Adi Prasetyo; Muhammad Syahril Badri Kusuma; Dantje Kardana Natakusumah
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
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.v19i2.851

Abstract

ABSTRACT Over the past ten years, flooding has been the most frequent problem in South Sumatra Province, Indonesia. As the capital of South Sumatra Province, Palembang City faces similar problems, where Lambidaro Watershed is the watershed with the highest 25-year potential flood discharge in Palembang City. One of the causes of flooding is the lack of river channel capacity related to land erosion in the watershed. This study aims to learn the prediction of sediment volume and efforts to reduce it in the Lambidaro watershed, Palembang City. This study uses two types of modeling, namely numerical models and empirical models. The numerical model uses the HEC-RAS 6.3.1 application, while the empirical model uses the USLE and SDR equations. The input parameters of the numerical model use some data derived from field measurements. The sediment concentration and observation discharge parameters were measured three times in September 2022. The grain size distribution parameters were sampled at three locations each once in August 2022, and the cohesive parameter was sampled at one location twice in August 2022. The result of the prediction of sediment volume by the numerical model is 1,421.86 m3/year. In contrast, the result of the prediction by the empirical model is 476,941.25 m3/year. Efforts to reduce the prediction of sediment volume USLE method are in the form of applying the intercropping method. The results of the conservation study show that the efforts made can reduce the volume of sediment by 17%.Keywords:       sediment, flood, conservation, intercropping, Lambidaro,  ABSTRAKSelama sepuluh tahun terakhir, banjir telah menjadi masalah yang paling sering terjadi di Provinsi Sumatera Selatan Indonesia. Sebagai ibu kota provinsi Sumatera Selatan, kota Palembang menghadapi masalah serupa. dimana DAS Lambidaro adalah DAS dengan potensi debit banjir kala ulang 25 tahun tertinggi di kota Palembang. Salah satu penyebab banjir adalah penurunan kapasitas alur sungai yang berkaitan dengan erosi lahan di DAS. Penelitian ini bertujuan untuk melakukan kajian prediksi volume sedimen serta upaya pengurangannya di DAS Lambidaro. Penelitian ini menggunakan dua jenis pemodelan yaitu model numerik dan model empirik. Model numerik menggunakan aplikasi HEC-RAS 6.3.1 sedangkan model empirik menggunakan persamaan USLE dan SDR. Parameter input dari model numerik menggunakan beberapa data yang berasal dari pengukuran lapangan. Parameter konsentrasi sedimen dan debit sesaat diukur sebanyak tiga kali pada bulan September tahun 2022. Parameter gradasi butiran diambil sampelnya masing – masing pada tiga lokasi sebanyak satu kali, dan parameter kohesif diambil sampelnya pada satu lokasi sebanyak dua kali pada bulan Agustus tahun 2022. Hasil prediksi sedimentasi dasar sungai model numerik adalah 1.421,86 m3/tahun sedangkan hasil prediksi volume sedimen model empirik adalah 476.941,25 m3/tahun. Upaya mengurangi prediksi volume sedimen metode USLE berupa penerapan metode tumpang-sari. Hasil kajian konservasi menunjukkan upaya yang dilakukan dapat mengurangi volume sedimen sebesar 17%.Kata Kunci:             sedimen, banjir, konservasi, tumpang-sari, Lambidaro
Kondisi Hidrodinamika dan Transpor Sedimen di Perairan Muara Sungai Ayung dengan Simulasi Delft 3D Putu Indah Dianti Putri; Muhammad Syahril Badri Kusuma
Jurnal Aplikasi Teknik Sipil Vol 21, No 4 (2023)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v21i4.17148

Abstract

The morphology of river mouths is influenced by several factors, including waves, river discharge, tides, currents, and those caused by human intervention. This study explores the dynamics of erosion and sedimentation processes in the estuary of the Ayung River caused by lithology, wind, tides, currents, and waves. This study aimed to determine the effect of river discharge, tides, currents, and waves on erosion and sedimentation in the waters of the Ayung River Estuary. Hydrodynamics and sediment transport modeling using Delft 3D software. As a validation of the modeling results, a calibration was performed on the results of hydrodynamic parameter measurements that had been carried out previously. The review conditions are divided into the rainy season (December – March) and the dry season (April – November). River discharge, tides, currents, and waves affect littoral processes on the shoreline around the waters of the Ayung River. This influence causes erosion and sedimentation around the coastal area and affects sediment transport both in the rainy and dry seasons.
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.
The Assessment of Peak Discharge Increment Due to Land Use Change in the Serang Welahan Drainage 1 (SWD 1) River, Central Java Province, Semarang : English Elisabeth Sitorus, Jessica; Wisanggeni, Dimas Harya; Salsabila, Aulia Aisyah; Nugroho, Eka Oktariyanto; Badri Kusuma, Muhammad Syahril
Jurnal Teknik Sipil dan Lingkungan Vol. 9 No. 2: Oktober 2024
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.9.2.293-302

Abstract

SWD1 River is located in one of those flood-prone areas in Central Java that generates flood hazards causing high risk to the surrounding rice fields and communities. However, a comprehensive study of flood hazards in SWD1 River has never been conducted. Nowadays, previous comprehensive flood studies in Indonesia only available for several very developed areas, such as the Jakarta Flood [1] – [5], Bandung Flood and Solo Flood , or new iconic area for mangrove conservation such as Langsa City . Most previous studies conclude that flood hazards in Indonesia are commonly generated by rain runoff, tides, and dam break flows, or a combination of these generators . Existing conditions show that SWD 1 is unable to accommodate runoff from the Wulan River, causing flooding. Based on rainfall data from BMKG, the maximum rainfall per month for a year reaches 323 mm. This study is an effort to analyze the impact of land use change.The research method used analysis of the influence of changes in CN (Curve Number) due to changes in land use on flood discharge as shown through changes in the Soil Conservation Service (SCS-CN) hydrograph on discharge and runoff volume. The selection of the SCS-CN method is due to its widespread adoption in various regions, its extensive use in numerous analytical studies, and its suitability for the characteristics of the watershed under review.The analysis results show that there has been a change in flood discharge from 2019 and 2022 with values of 366.920 and 371.154 m3/second. The discharge values did not change significantly because the CN values were as follows, 83.25 and 83.36. Through analysis, it can be seen that an increase in discharge of 1.14% from 2011 to 2022.The several alternatives are needed to reduce flooding, such as watershed conservation upstream, minimizing land use changes and building flood mitigation infrastructure downstream.
KOMBINASI PREDIKSI VOLUME SEDIMEN MENGGUNAKAN METODE HECRAS-USLE UNTUK MENDUKUNG KONSERVASI DAS LAMBIDARO PALEMBANG, SUMATERA SELATAN Sultan, Masri nur; Farid, Mohammad; Prasetyo, Adi; Kusuma, Muhammad Syahril Badri; Natakusumah, Dantje Kardana
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
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.v19i2.851

Abstract

 Over the past ten years, flooding has been the most frequent problem in South Sumatra Province, Indonesia. As the capital of South Sumatra Province, Palembang City faces similar problems, where Lambidaro Watershed is the watershed with the highest 25-year potential flood discharge in Palembang City. One of the causes of flooding is the lack of river channel capacity related to land erosion in the watershed. This study aims to learn the prediction of sediment volume and efforts to reduce it in the Lambidaro watershed, Palembang City. This study uses two types of modeling, namely numerical models and empirical models. The numerical model uses the HEC-RAS 6.3.1 application, while the empirical model uses the USLE and SDR equations. The input parameters of the numerical model use some data derived from field measurements. The sediment concentration and observation discharge parameters were measured three times in September 2022. The grain size distribution parameters were sampled at three locations each once in August 2022, and the cohesive parameter was sampled at one location twice in August 2022. The result of the prediction of sediment volume by the numerical model is 1,421.86 m3/year. In contrast, the result of the prediction by the empirical model is 476,941.25 m3/year. Efforts to reduce the prediction of sediment volume USLE method are in the form of applying the intercropping method. The results of the conservation study show that the efforts made can reduce the volume of sediment by 17%.Keywords:       sediment, flood, conservation, intercropping, Lambidaro 
PENILAIAN TINGKAT LAJU EROSI di DAS CISANGGARUNG HULU MENGGUNAKAN METODE USLE Tri Wahyudin Ahmad; Muhammad Syahril Badri Kusuma; Faizal Immaduddin Wira Rohmat; Arief Yudho Wicaksono; Vika Febriyani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.346-360

Abstract

Soil erosion is one of the major environmental degradation processes that directly contribute to land quality deterioration, increased river sedimentation, and disruption of hydrological functions within a watershed. This study aims to spatially model erosion rates in the Upstream Cisanggarung Watershed using the Universal Soil Loss Equation (USLE) integrated with a GIS-based Model Builder to develop an automated, efficient, and reproduceble workflow. The analysis was conducted by incorporating all USLE components (R, K, LS, and CP). Rainfall data, soil type maps, 30 m resolution FABDEM, and land cover maps were employed as the main inputs in the modeling process. The results indicate that erosion rates range from 20.66 to 67.60 ton/ha/years, with a Sediment Delivery Ratio (SDR) of 6.58%. Consequently, the sediment yield reaching the watershed outlet was estimated to range from 60.517,5 to 198.034,6 ton/years. Spatially, erosion hotspots were identified in areas with steep slopes dominated by dryland agriculture and plantation land use. The integration of Model Builder improve data processing consistency, reduce manual errors, and enable rapid data updates for subsequent analyses. These findings underscore the need for implementing conservation strategies such as terracing, contour farming, and vegetative rehabilitation to reduce erosion rates and support sustainable watershed management.
POTENSI RAINWATER HARVESTING DALAM MENGURANGI RISIKO KEKERINGAN DI KABUPATEN KARAWANG Dian Afifah Rahmawati; Eka Oktariyanto Nugroho; Muhammad Syahril Badri Kusuma; M. Cahyono; Imroatul C. Juliana; Taufik Ari Gunawan
Jurnal Riset Rekayasa Sipil Vol 7, No 1 (2023): September 2023
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v7i1.79198

Abstract

Drought occurs quite often in Indonesia, closely related to water availability for community needs. One of the districts in West Java Province experiencing drought problems is Karawang district, where the RWH (Rainwater Harvesting) concept will be applied. This study aimed to analyze the risk of drought-related to applying the potential RWH in reducing drought risk. This study only focuses on meteorological drought, determined by SPI (Standardized Precipitation Index). Identification of potential areas for the application of RWH is carried out using the Weighted Method Overlay approach in the Geographic Information System (GIS), which was modified by adding a parameter of potential drought hazard. The potential reliability of RWH, as seen from Volumetric Reliability (VR) for supplying the average water requirement of MCK (Bath Washing Toilet) per year, indicates that most of the Karawang district area is potential for applying RWH. The results of adding the potential drought hazard parameters on applying the RWH concept show the decreasing area of very potential and potential category areas into 5,38%, the increase of drought resistance capacity is 17.5%, and the risk-reducing to 8.3%. Those results are due to the changes in the area of drought in the risk analysis. The assumptions of 60 rainy days on the average rainy day in a year and all households making RWH storage systems were used in the analysis. The results of this study can be used as a first step to see the potential of RWH in Karawang Regency both in terms of area and reliability.