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All Journal Jurnal Teknik Sipil JURNAL TEKNIK HIDRAULIK Jurnal Litbang Kota Pekalongan Bulletin of Geology
Nurmaulia, Sella Lestari
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Engineering Public Health

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Strategi Pemetaan Genangan Banjir Sungai di Kota Pekalongan Menggunakan Model SCS-CN Az Zahra, Talitha; Abdulharis, Rizqi; Nurmaulia, Sella Lestari; Julian, Miga Magenika
JURNAL LITBANG KOTA PEKALONGAN Vol. 21 No. 2 (2023)
Publisher : Badan Perencanaan Pembangunan, Penelitian dan Pengembangan Daerah (Bappeda) Kota Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54911/litbang.v21i2.251

Abstract

Pekalongan City consistently experiences annual floods. In this research, we aimed to map the distribution of potential flood inundation in Pekalongan City under two scenarios: the existing land cover and urban planning (Rencana Tata Ruang Wilayah/RTRW). We utilized hydrological modeling to assess the suitability of the RTRW for future implementation. The Soil Conservation Service – Curve Number (SCS-CN) method was employed, incorporating Digital Elevation Model (DEM) data, soil data, precipitation data, and two sets of land cover data (existing and urban planning). The findings indicate that under the existing land cover, approximately 13.97% of the area is susceptible to flooding, while the remaining 86.03% is not at risk. Conversely, the model using the urban planning (RTRW) scenario suggests that 14.06% of the area has the potential to flood, while 85.94% is not susceptible to flooding. The increase in potential flooding in the urban planning scenario may be attributed to the expansion of residential areas and the reduction of plantation and dry land cover. Furthermore, in assessing monthly modeling results, we observed that the area with flood potential is highest in December 2022 and lowest in June 2022. Considering topographical conditions (DEM), we found that the potential for flood inundation is fairly and evenly distributed in flat areas, mostly with elevations of less than 11 meters. Areas at higher elevations are predominantly free from flood potential, but it is noteworthy that certain areas in the Pekalongan Selatan District, with elevations higher than 11 meters, still have the potential for flooding.  Keywords: Flood, hydrology model, SCS-CN, existing land cover, urban planning
ANALISIS PERBANDINGAN METODE GEOREFERENSI LANGSUNG DAN TIDAK LANGSUNG PADA DATA AWAN TITIK Nurmaulia, Sella Lestari
Bulletin of Geology Vol 7 No 1 (2023): Bulletin of Geology
Publisher : Fakultas Ilmu dan Teknologi Kebumian (FITB), Institut Teknologi Bandung (ITB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/bull.geol.2023.7.1.1

Abstract

Teknologi Terrestrial Laser Scanning (TLS) dapat menghasilkan pemodelan 3-Dimensi dengan geometri yang baik. Namun, untuk dapat menghasilkan ketelitian geometri yang baik diperlukan teknik registrasi dan proses georeferensi yang tepat. Teknik registrasi yang banyak digunakan adalah menggunakan algoritma Iterative Closest Point (ICP). Keberhasilan teknik registrasi ini dipengaruhi oleh presentase overlap, besarnya sudut dan jarak antar dua data point clouds. Pada teknik georeferensi tidak langsung, data point clouds yang dihasilkan belum semuanya memiliki koordinat global sehingga untuk menyatukan semua hasil pemindaian, maka metode registrasi dilakukan dengan menggunakan registrasi target-to-target atau registrasi cloud-to-cloud perlu dilakukan sebelum menggunakan algoritma ICP. Pada teknik georeferensi langsung, data point clouds untuk seluruh hasil pemindaian sudah memiliki hasil koordinat global sehingga teknik registrasi yang digunakan bisa langsung menggunakan algoritma ICP. Hasil yang diperoleh adalah nilai Root Mean Square Error (RMS) adalah sama untuk kedua metode georeferensi langsung maupun georeferensi tidak langsung. Kata kunci: target-to-target, cloud-to-cloud, Iterative Closest Point (ICP)
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
Strategi Pengendalian Banjir Sungai Banger Kota Pekalongan terhadap Penurunan Muka Tanah dan Kenaikan Muka Laut Alfajar, Gilang; Kuntoro, Arno Adi; Yasinta, Nur Laili; Rahman, Irfie Lutfiah Aulia; Nugroho, Eka Oktariyanto; Rosyidi, Imron; Nurmaulia, Sella Lestari; Huseiny, Mohammad Iqbal
JURNAL TEKNIK HIDRAULIK Vol 16, No 2 (2025): 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.v16i2.847

Abstract

Pekalongan City, located on the northern coast of Central Java, is vulnerable to flooding due to high rainfall, low land elevation, land subsidence, sea level rise, and uncontrolled human activities. The Banger River, originally constructed as an artificial river to reduce flooding from the Loji River, has now become a source of flooding. This study aims to identify technical flood control solutions for the Banger River using spatial, hydrological, tidal, and hydraulic analyses supported by hydraulic flow modeling software. Twenty years of rainfall data, spatial data, river geometry, and tidal information were used to simulate existing and projected long-term conditions. The design flood discharge with a 20-year return period was calculated at 281,9 cubic meters per second, resulting in an average inundation of 0,27 meters, which may rise to 0,85 meters within the next ten years due to land and sea level changes. Three alternatives were evaluated: normalization with earth embankment, a combination of normalization and parapet, and parapet-only implementation. Results indicate that using parapets, or combining them with river normalization and embankments, offers the most technically effective flood control solution in both short and long terms. Overall, the study emphasizes the need for adaptive flood management strategies in coastal urban areas. It is recommended that local governments integrate structural measures with nonstructural policies, such as land use regulation and public awareness, to ensure sustainable flood risk reduction.
Co-Authors Alfajar, Gilang Arno Adi Kuntoro, Arno Adi Az Zahra, Talitha Eka Oktariyanto Nugroho Huseiny, Mohammad Iqbal Imron Rosyidi, Imron Julian, Miga Magenika Mohammad Farid Rahman, Irfie Lutfiah Aulia Rizqi Abdulharis, Rizqi Yasinta, Nur Laili