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All Journal Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Jurnal Suara Pengabdian 45 Journal of Civil Engineering and Technology Sciences Perigel: Jurnal Penyuluhan Masyarakat Indonesia Jurnal Geosains West Science Svarga Pena: Jurnal Pengabdian Kepada Masyarakat
Thomasonan Lutfie Prananto
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Social Sciences

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Hydrological Discharge and Hydropower Capacity Assessment for Sustainable Watershed Management Saputri, Utamy Sukmayu; Niar Armayanti; Thomasonan Lutfie Prananto
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 11 No 1 (2026): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v11i1.1583

Abstract

The fluctuation of Cicatih River discharge presents a significant challenge in maintaining the operational performance of the Ubrug Hydropower Plant (HPP) in Sukabumi. Dependence on seasonal variations directly influences turbine efficiency and the continuity of electricity generation. This study aims to analyze the existing discharge of the Cicatih River, determine the efficiency of Ubrug HPP turbines, and evaluate the optimal discharge based on seasonal conditions. A quantitative approach was applied using the F.J. Mock hydrological simulation method to estimate discharge from rainfall data, potential evapotranspiration (PET), and watershed characteristics. Turbine efficiency was assessed through comparison of theoretical and actual power output during 2015–2024. Findings indicate that annual discharge varied from 12.13 m³/s to 17.65 m³/s, with turbine efficiency ranging between 83% and 86%, averaging 85.1%. The optimal discharge for maximum generation (≥15 m³/s) occurred mainly during the rainy season, whereas in the dry season discharge averaged about 12 m³/s, falling below the optimal threshold and reducing electricity output. Overall, the Ubrug HPP demonstrates stable and relatively high turbine efficiency, but maximum capacity is limited by seasonal discharge availability. Hence, integrated water management strategies are required to secure sustainable power supply and enhance operational efficiency of the plant.
Co-Authors Agustinus Sungsang Nana Patria Amrita Winaya Shita Dewi Astari Wulandari Hetyorini Judijanto, Loso Niar Armayanti Nofirman, Nofirman Pramesta Armanisag Pangestuti Saputri, Utamy Sukmayu