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All Journal Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan
Muhammad Rona
Universitas Almuslim

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Hydrological Analysis of Flash Floods Using FFPI and API in the Krueng Meuh Watershed, Aceh Muhammad Rona; Cut Azizah; Zuraihan
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 11 No 2 (2026): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v11i2.1624

Abstract

Flash floods are highly destructive hydrometeorological disasters that threaten infrastructure integrity and public safety in the Krueng Meuh Sub-watershed, Bireuen District. This study aims to conduct a comprehensive hydrological analysis of flash flood triggers by evaluating physical characteristics and land-use dynamics. The methodology integrates Digital Elevation Model (DEM) analysis for slope mapping, daily rainfall data (2020-2024) to calculate the five-day Antecedent Precipitation Index (API5), and remote sensing to detect land-cover changes. These parameters were synthesized within a Geographic Information System (GIS) using the Flash Flood Potential Index (FFPI) approach to identify spatial vulnerability zones. The results reveal that over 50% of the study area consists of steep to very steep slopes dominated by erodible geological materials. Soil conditions reached high saturation levels prior to flood events, with API5 values ranging from 57.6 to 71.3 mm. Furthermore, the massive conversion of forest into plantations (57.68%) has significantly increased surface runoff coefficients. FFPI analysis classifies the majority of the sub-watershed into moderate to very high vulnerability levels. These findings provide critical scientific evidence for local authorities to formulate spatial-based mitigation strategies and adaptive watershed management.
Co-Authors Cut Azizah Zuraihan