Nature-Based Solutions for Flood Mitigation in Metropolitan Areas
Received: 23 September 2024 | Revised: 27 October 2024 | Accepted: 5 November 2024 | Online: 2 December 2024
Corresponding author: Yureana Wijayanti
Abstract
Flooding is a globally common problem in metropolitan areas including Jakarta, Indonesia. The increased intensity and frequency of rainfall caused by climate change and rapid urbanization have raised the risk of flooding in urban areas. One solution is to implement polders to mitigate flooding in coastal metropolitan areas. Regrettably, the current polder system is inadequate for managing flooding due to rapid land-use changes and regional expansion. This study analyzes flood control in the Jakarta region using the East Sunter Polder System, which experienced flooding in both 1990 and 2020 despite the implementation of the polder system. The polder system, consisting of four catchment areas—Petukangan, KBN 1/Sukapura, KBN 2, and Kebantenan—faces drainage challenges exacerbated by rainfall. To mitigate flood risks, Nature-Based Solutions (NBSs) have been implemented, including retention ponds and long storage systems. Hydrological and hydraulic analyses were conducted using HEC-HMS and HEC-RAS, and ArcGIS was employed for floodplain integration. This study underscores the significance of incorporating NBSs in urban flood management, demonstrating how they enhance resilience and mitigate flood risks. By integrating NBSs into the urban planning framework, the findings suggest that flood risk management can be significantly improved, leading to better preparation and long-term sustainability for managing natural hazards.
Keywords:
flood, HEC-HMS, HEC-RAS, NBSsDownloads
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Copyright (c) 2024 Juliastuti, Yureana Wijayanti, Alexander Agung Santoso Gunawan, Edy Irwansyah, Sri Wulandari
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