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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil
Muhammad Syahrizal Muslimin
Teknik Sipil; Universitas Diponegoro; Jl. Prof. Soedarto, Semarang, Indonesia
Civil Engineering, Building, Construction & Architecture Transportation

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Implementation of Rainwater Harvesting for Urban Flood Control in the Karang Asam Kecil Watershed Muhammad Syahrizal Muslimin; Suharyanto; Dyah Ari Wulandari
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 2 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (July 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i2.11036

Abstract

95 masl and is often flooded. This study aims to evaluate the effectiveness of the implementation of Low Impact Development with rainwater harvesting as the main method in reducing surface runoff in the Karang Asam Kecil watershed. Rainwater harvesting modeling is applied to 9 subcatchments with an application of 100 m2/unit. Simulation using the Storm Water Management Model (SWMM) with a 10-year return period rainfall shows that surface runoff in existing conditions is 45.632 mm. Meanwhile, after the implementation of rainwater harvesting, it decreased to 18.814 mm, or decreased by 58.77%. These results indicate that rainwater harvesting is effective in reducing surface runoff and can be a solution to flood mitigation in the Karang Asam Kecil watershed.
Co-Authors Dyah Ari Wulandari Suharyanto