Nur Qudus, H. Harianingsih, Virgiawan Adi Kristianto, Indra Sakti Pangestu, Muhammad Rizky Fahrizal Putra, Abyasa Aryajati Daniswara, Moh Ari Restian Nugraha
Tidal flooding is a serious issue, one of the causes being land subsidence in coastal areas of Indonesia. This land subsidence is directly proportional to the lowering of the groundwater table, meaning that the greater the groundwater level decline, the worse the flooding conditions in the city will be. Therefore, it is urgent to analyze a solution that addresses the decline of groundwater levels and the issue of excessive surface water in Indonesia. The purpose of this research is to model the effectiveness of the Well and Borehole Recharge method in managing flood runoff in the coastal area of Indonesia with geographical coordinates between 6°50'– 7°10' S and between 109°50'–110°35' E. The method used includes analysis through modeling with remote sensing, data processing using Geographical Information Systems (GIS) software, and flood runoff volume calculation using HEC-HMS software. The research results indicate that Managed Aquifer Recharge (MAR) significantly reduced peak runoff from 250 m³/s to 200 m³/s, despite a cumulative rainfall of 60 mm. Additionally, the maximum flood discharge, initially 256.3 m³/s, was reduced to 206.2 m³/s after MAR implementation. The reduction in maximum flood discharge and the delay in peak discharge time suggest that MAR enhances groundwater infiltration and retention capacity, effectively decreasing surface runoff and delaying runoff timing. Copyright: ©2025 The authors. This article is published by IIETA and is licensed under the CC BY 4.0 license
Civil Engineering Department, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Electrical Engineering Department, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Civil Engineering Department, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Electrical Engineering Department, Universitas Negeri Semarang, Semarang, 50229, Indonesia
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