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All Journal Jurnal Ilmu Lingkungan Aquacoastmarine Jurnal Reka Lingkungan Majalah Geografi Indonesia Informatika Mulawarman: Jurnal Ilmiah Ilmu Komputer SemanTIK : Teknik Informasi IJEBD (International Journal Of Entrepreneurship And Business Development) Elipsoida : Jurnal Geodesi dan Geomatika JAGAT (Jurnal Geografi Aplikasi dan Teknologi) geoedusains: Jurnal Pendidikan Geografi Buletin Poltanesa Jurnal Teknik Sumber Daya Air Sewagati Journal of Geomatics Engineering, Technology, and Science AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences Geoid - Journal of Geodesy and Geomatics
Feri Fadlin
Politeknik Pertanian Negeri Samarinda
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Analisis Karakteristik Morfometri Sub DAS Karang Mumus Menggunakan Aplikasi HEC-HMS Astutik Ariningsih; Feri Fadlin; Dwi Agung Pramono; Shabri Indra Suryalfihra
Journal of Geomatics Engineering, Technology, and Science Vol. 3 No. 2 (2025): March 2025
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v3i2.52

Abstract

The Karang Mumus sub-watershed is located in an urban area, making it vulnerable to development pressures and land use changes. Morphometric analysis of the Karang Mumus sub-watershed plays a crucial role in understanding the physical characteristics of the area and their relationship to water resource management and flood disaster mitigation in Samarinda City and its surrounding regions. This study aims to examine the morphometric characteristics of the Karang Mumus sub-watershed through the processing of DEMNAS data using the HEC-HMS 4.10 application. The results show that the Karang Mumus sub-watershed is divided into 15 sub-sub-watersheds, with a total area of 318.98 km². The sub-sub-watershed with the longest river channel is sub-sub-watershed 1, with a channel length of 18.57 km, while the shortest is sub-sub-watershed 12, with a channel length of 1.05 km. The average slope/gradient of the main river channel in the Karang Mumus sub-watershed is 0.15 m/m. The drainage density index of the Karang Mumus sub-watershed falls into the medium classification (0.25–10 km/km²). In terms of shape, the Karang Mumus sub-watershed is classified as elongated, with a Roundness Coefficient (RC) of 0.03 km. 
Perbandingan Pengamatan Benchmark Menggunakan Alat Spectra SP80 dan Comnav T300 dengan Software Trimble Business Center Yunadi Arham; Dawamul Arifin; Feri Fadlin; Andi Baso Sofyan A. P.
Journal of Geomatics Engineering, Technology, and Science Vol. 3 No. 2 (2025): March 2025
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v3i2.53

Abstract

The GNSS survey method is currently widely used for various purposes, both scientific and practical, due to its advantages in terms of accuracy, speed, simplicity, and lower cost. Today, a wide range of GNSS survey instruments are available for benchmark point observations. Therefore, it is necessary to obtain information regarding the accuracy that these different instruments can provide. This study compares the results of benchmark point observations using the same method, namely the static method, but with two different instruments: Spectra SP80 and Comnav T300. The aim of this research is to determine the accuracy level of benchmark observations using the Spectra SP80 and Comnav T300, processed with the Trimble Business Center application. The comparative analysis shows that the Spectra SP80, when processed using Trimble Business Center, produces a smaller average difference in X and Y coordinates compared to the Comnav T300. However, in the Z coordinate, the Comnav T300 shows a smaller average difference than the Spectra SP80. Data analysis from the processing summary images provides information on the precision levels of both instruments. At benchmark point BM 2, the Comnav T300 demonstrated superior horizontal and vertical precision compared to the Spectra SP80. Conversely, at benchmark point BM 5, the Spectra SP80 showed better horizontal and vertical precision than the Comnav T300.
Identifikasi Kondisi Drainase Berbasis WebGIS di Jalan Pangeran Antasari Kota Samarinda Fernando Dwio Junianto; Shabri Indra Suryalfihra; Feri Fadlin; A. Arifin Itsnani SM
Journal of Geomatics Engineering, Technology, and Science Vol. 4 No. 1 (2025): September 2025
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v4i1.59

Abstract

This study aims to identify the condition of drainage channels located along Jalan Pangeran Antasari in Samarinda City and to present the data interactively through a WebGIS platform. Drainage issues in this area often cause waterlogging and flooding during heavy rainfall. Therefore, accurate and accessible mapping of drainage conditions is crucial. The research method involved physical measurements of drainage dimensions, such as top width, bottom width, channel height, and concrete width. The collected data were processed using ArcGIS Pro software by digitizing the drainage paths in the form of polylines, which were then published through ArcGIS Online in a dashboard format. Field documentation was also supported by geo-tagged photos that were converted into coordinate points on the map. The findings of the study revealed that several drainage segments have inadequate dimensions to accommodate stormwater during heavy rain, indicating the need for improvement or normalization. The developed WebGIS successfully presents spatial and descriptive information about the drainage conditions in an interactive format, making it a valuable reference for technical evaluation and drainage management planning in the area
Evaluasi Pemanfataan Foto Udara untuk Perhitungan Volume StockROM 74 di PT Mitra Indah Lestasi Audi Qhoryaty Salsabillah; Nia Kurniadin; Dwi Agung Pramono; Feri Fadlin
Journal of Geomatics Engineering, Technology, and Science Vol. 4 No. 2 (2026): March 2026
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v4i2.65

Abstract

Survey activities in the mining sector generally use terrestrial methods, total stations are one of the tools used. The use of total stations is considered inefficient because it requires many surveyors and takes a long time. Technological developments in the field of surveying allow the use of photogrammetry methods with drones/UAVs as tools for mapping in the mining sector, including in calculating the volume of stockROM (Run of Mine) using aerial photographs. The advantages of using this method include being able to cover a wider area in a relatively short time, surveyor efficiency, and more affordable costs. However, we still need to assess the quality and accuracy of stockROM volume calculations by comparing them to terrestrial topographic data. StockROM 74 PT Mitra Indah Lestari was taken as a sample in this study. Aerial photo data was processed using Agisoft Metashape to produce DEM data. The DEM was processed to produce contour data. On the other hand, this DEM was also processed to obtain point values using the extract value to point method using ArcGIS. Topographic data from measurements using a total station is used as a comparison. The three data sets—contour data, point data, and topography—were processed using a triangulation method using Minescape to generate StockROM volume values, which were then compared. The difference in volume between contour processing and topographic data is 6%, while between point processing and topographic data is 0.00197%.
Pemetaan Batimetri dan Karakteristik Morfologi Dasar di Sungai Manggar Sekitar Jembatan Dua Manggar Kecamatan Balikpapan Timur Kota Balikpapan sebagai Indikasi Potensi Gerusan Lokal Muhammad Fajar Dharu Kusuma; Radik Khairil Insanu; Feri Fadlin; Nia Kurniadin
Journal of Geomatics Engineering, Technology, and Science Vol. 4 No. 2 (2026): March 2026
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v4i2.66

Abstract

Manggar River is part of the Manggar Kecil watershed in Balikpapan City, covering an area of 24.07 km² and emptying into the Makassar Strait. The river is actively traversed by various types of watercraft near Jembatan Dua Manggar (Manggar Second Bridge), yet no bathymetric data have been available to support navigational safety, and no prior study has examined the riverbed morphology or potential local scour around this bridge. This study aimed to map the underwater topography of the Manggar River around Jembatan Dua Manggar through hydrographic survey, to interpret its morphological characteristics, and to identify potential scour or sedimentation zones that may affect navigational safety and infrastructure. Data collection was conducted on 8–9 March 2024, comprising bathymetric sounding using a Map Sounder at 5-second intervals, 25-hour tidal observation, and riparian topographic measurement using a Comnav T300 geodetic GPS. Survey lines were planned in cross and longitudinal patterns with 30-meter intervals. Depth data were corrected against the Mean Sea Level (MSL) value of 1.320 m derived from tidal observations. Processing yielded 1,036 depth points, ranging from a shallowest depth of -1.1616 m at the downstream section to a deepest of -15.442 m upstream, with an average correction difference of 1.15 m. River bed topography varies from gentle slopes in the downstream reach (average 2–3 m) to a scour-hole (trough) formation upstream reaching a maximum depth of 15.442 m approximately 80 m from the bridge, indicating a potential local-scour zone that warrants periodic monitoring. A bathymetric map with 1-m minor and 5-m major contour intervals was produced using AutoCAD Civil 3D and ArcGIS 10.8 software, and can serve as baseline data for future monitoring of riverbed morphology changes and local-scour evaluation around Jembatan Dua Manggar.
Pemetaan Batimetri di Sungai Karang Mumus Kecamatan Samarinda Ilir Kota Samarinda Toni Surya Prayetno; Feri Fadlin; Suparjo Suparjo; Radik Khairil Insanu
Journal of Geomatics Engineering, Technology, and Science Vol. 5 No. 1 (2026): September 2026
Publisher : Geomatics Technology Study Program, Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/gets.v5i1.71

Abstract

The Karang Mumus River is a tributary of the Mahakam River flowing through Samarinda City, East Kalimantan, and plays an important role in the city's hydrological system as a waterway, a water source, and a floodway during the rainy season. Reliable information on the river's underwater topography is required to support navigation safety and flood-risk mitigation. This study aimed to map the topography and depth of the Karang Mumus riverbed, from Bridge 3 to the river mouth, and to present its longitudinal and cross-sectional profiles. Bathymetric sounding was carried out using a Garmin Map Sounder 585 Plus, arranged in five longitudinal survey lines at 10-m spacing and 66 cross-sectional lines at 25-m intervals, combined with a Comnav T300 geodetic GNSS receiver for riparian topographic measurement. Depth data were corrected against Mean Sea Level derived from 29 days of tidal observation using the Admiralty method, together with instantaneous tidal readings taken every 5 minutes during sounding, then processed in Microsoft Excel, AutoCAD Civil 3D, and ArcGIS. A total of 7,655 depth points were recorded over a survey area of 9.59 ha. The Mean Sea Level from the Admiralty analysis was 0.82 m, with a mixed, predominantly semidiurnal tidal type. Measured riverbed depths below Mean Sea Level ranged from 2.44 m at the shallowest reach (STA 0+150 - STA 0+175) to 32.92 m at the fish-auction port near the estuary, while the interpolated riverbed elevation model ranged from -2.15 m to -31.88 m. The resulting bathymetric, contour, longitudinal-section, and cross-section maps indicate the river remains navigable for small to medium vessels requiring a draft of 1.5-2 m, while highlighting shallow and narrow segments that warrant attention for safe navigation.
Co-Authors A. Arifin Itsnani SM Adha Mashur Sajiah Agus Sugiarto Ahmad Aris Mundir Sutaji Ahmad Aris Mundir Sutaji Ahmad Tarmizi Abdul Karim ALPIAN NUR Andi Baso Sofyan Andi Baso Sofyan A. P. Andi Baso Sofyan A. P. Andi Baso Sofyan A. P. Andi Baso Sofyan A.P Andri Estining Sejati Andriani Nadia Rahmawati Astutik Ariningsih Audi Qhoryaty Salsabillah Dawamul Arifin Dwi Agung Pramono Dwi Agung Pramono Dyah Widyasasi Eny Maria Erna Rositah F. V. Astrolabe Sian Prasetya Fahrudi Ahwan Ikhsan Fernando Dwio Junianto Fevrin Wardani Indrawati Indrawati Joko Triyono Jumadil Nangi La Harudu La Ode Nursalam Liyushiana, Liyushiana Marfai, Muh Aris Maricar, Farouk Masri Ridwan, Masri Maulana S., Fuad Agung Mawaddah, Najma Nur Medi Taruk Miftahul Jannah Muh. Akshar Muhammad Erik Riswan Muhammad Fajar Dharu Kusuma Mukhsan Putra Hatta, Mukhsan Putra Nadira Ayu Herliana Nadira Ayu Herliana Najma Nur Mawaddah Natalis Ransi, Natalis Nia Kurniadin Nurlansi Nurlansi Nuzula Elfa Rahma Radik Khairil Insanu Rio Adiputra Romansah Wumu Shabri Indra Suryalfihra Sofyan A. P., Andi Baso Suparjo Suparjo Suparjo Suparjo Suparjo Suriani, Lili Sutaji, Ahmad Aris Mundir Thaha, Muhammad Arsyad Toni Surya Prayetno Tsalji Dzakira Fasabbih Yulma Yunadi Arham