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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur JMTS: Jurnal Mitra Teknik Sipil LIMNOTEK
Sapan, Elenora Gita Alamanda
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science

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Assessment of Flash Flood Vulnerability Index in a tropical watershed region: a case study in Ciliwung Hulu watershed, Indonesia Novianti, Relita; Wardhani, Fitriany Amalia; Prihatinningtyas, Eka; Sapan, Elenora Gita Alamanda
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 29 No. 1 (2023)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2023.1105

Abstract

Flash floods, an unpredicted swift climatological disaster, frequently occur in Indonesia. However, there are limited vulnerability assessments, especially in urban and vital regions such as Bogor District. The study aims to assess the vulnerability index of Ciliwung Hulu Watersheds as one of the most susceptible areas in the district. Flash flood vulnerability index (FFVI) is selected to be calculated as the indicator. Data were obtained from the official government offices and processed using the FFVI formula referring to the work of Nasiri et al., (2019) and Perka BNPB No. 2/ 2012 and then mapped using ArcGIS 10.3. The results and the maps show that the study area is categorized as highly to very highly vulnerable to flash flood disasters. The attained results help facilitate the governance interplay processes in building a more disaster-ready management plan and to construct a more resilient society.
Integrated Field Theoretical Evaluation of Sediment Pond Efficiency in a Tropical Mining Catchment Cantik, Bella Koes Paulina; Sapan, Elenora Gita Alamanda; Putra, Ramon; Martin, Belly; Kevin, Josh
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 31 No. 2 (2025)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2025.13506

Abstract

Sediment ponds in coal mining operations serve as critical infrastructure for wastewater management. A major challenge in their operation is excessive sediment accumulation, which is often difficult to anticipate accurately, especially when relying solely on theoretical calculations. Such circumstances highlight the importance of an approach that is not solely theoretical, but also considers the actual dynamics observed in the field. The coal mining sediment pond examined in this study was initially constructed to accommodate a catchment area of 205 Ha, with a useful life of 10 years. However, the pond has reached full capacity in less than five years, 53% earlier than expected, indicating the need for re-evaluation, especially as the catchment area is planned to expand to 885 Ha. This study aims to evaluate, compare, and recalculate the sediment pond’s capacity under expanded catchment conditions (885 Ha), by integrating field-based measurements and theoretical sediment yield methods to produce a more representative design. The methods employed include the Revised Universal Soil Loss Equation (RUSLE), Lane & Kalinske’s Approach, Einstein’s Approach, Brook’s Approach, and Chang, Simons, and Richardson’s Approach. RUSLE utilizes secondary data, while the other methods incorporate both primary and secondary data. The results show a wide range of sediment transport estimates, from 20,184 m3 using Einstein’sto 507,075 m3 using Chang’s. Among the evaluated methods, Lane and Kalinske, as well as Brook, produced sediment volume estimates that closely matched field-based measurements, making them suitable for field conditions. RUSLE produced a lower-bound estimate, while Einstein and Chang’s method deviated significantly from the observed range. These findings underscore the importance of integrating field measurements with theoretical models to enhance the reliability of sediment-yield estimation and support informed decision-making in sediment pond.
Co-Authors Aziz, Muhammad Luthfi Bandur, Hillaryana Epriscamayeni Cantik, Bella Koes Paulina Eka Prihatinningtyas Ghiffari, Muhammad Razzaaq Al Kevin, Josh Louisa, Cindy Martin, Belly Novianti, Relita Putra, Ramon Shofwatul Fadilah, Shofwatul Wardhani, Fitriany Amalia Yuvhendmindo, Muhammad Ravi