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All Journal Teknik Sipil dan Arsitektur Media Ilmiah Teknik Sipil Portal: Jurnal Teknik Sipil Indonesian Journal of Community Services Environmental Science and Engineering Conference Proceeding Technema: Journal of Intelligent Engineering and Computing
Slamet Imam Wahyudi
Universitas Islam Sultan Agung
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Industrial & Manufacturing Engineering Public Health Social Sciences

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Journal : technema journal of intelligent engineering and computing

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Analysis of Clean Water Needs and Reservoir Storage Capacity in Jepara District (A Case Study of the Kalimati Reservoir, Jepara Regency) Muhammad Aditya Rizky Ananto; Muhammad Nanda Desfianto; Slamet Imam Wahyudi; Moh. Faiqun Ni’am
Technema: Journal of Intelligent Engineering and Computing Vol. 1 No. 3 (2026): Technema: Journal of Intelligent Engineering and Computing
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

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Abstract

Clean-water availability is essential for community activities, while population growth and socioeconomic development increase pressure on water-supply infrastructure. The Kalimati Reservoir in Jepara District has potential as a raw-water source, but its utilization remains constrained by inadequate storage planning and seasonal fluctuations in water availability. This study aims to determine projected clean-water demand and the reservoir storage capacity required to support reliable supply over a ten-year planning period. An empirical quantitative approach was applied using population data from 2020–2024, domestic and non-domestic water-consumption data, and Kaliwiso River discharge data. Population growth was projected using the geometric method, while water demand was calculated based on domestic, public-tap, non-domestic, and distribution-loss components, followed by maximum daily, peak-hour, and Q80% dependable-flow analyses. The projected population in 2034 reaches 109,714 inhabitants, generating a clean-water requirement of 125.60 L/s, maximum daily demand of 150.72 L/s, and peak-hour demand of 200.96 L/s. A reservoir capacity of 2,604.40 m³ with a planned depth of 3 m requires a footprint of 868.13 m². The available 15,893.22 m² site area is adequate for the reservoir and supporting facilities, with an estimated construction cost of IDR 2,492,850,400. The results indicate that the proposed storage capacity can provide a preliminary buffer against seasonal reductions in raw-water availability and support continuity of the planned supply system. These findings provide an engineering basis for integrated and sustainable clean-water development using the Kalimati Reservoir.
Co-Authors Agusman Agusman Henny Pratiwi Adi Henny Pratiwi Adi M. Faiqun Niam M. Faiqun Niám Moh. Faiqun Ni’am Muhamad Hendrie Soesanto Muhammad Aditya Rizky Ananto Muhammad Nanda Desfianto Mutamimah Mutamimah Nahdatunnisa, Nahdatunnisa Pradana Hadi Sanjaya Tahir, M. Arzal Tessa Kusumaningsih Wati Asriningsih Pranoto