Governance and Financing Models of Green Infrastructure for Flood Mitigation in Sustainable Urban Planning in Indonesia

Abstract

Urban flooding has become an increasingly critical challenge in Indonesian cities, exacerbated by climate change, rapid urbanization, and deteriorating conventional gray infrastructure. Green infrastructure emerges as a transformative approach to urban flood management, offering multifunctional benefits beyond traditional drainage systems. However, successful implementation faces significant governance and financing barriers. This conceptual paper examines governance models and financing mechanisms for green infrastructure deployment in Indonesian urban contexts, with specific focus on flood mitigation. Through synthesis of international best practices and Indonesian policy frameworks, this study proposes an integrated blue-green-gray governance model that combines nature-based solutions with engineered facilities. The analysis reveals that Public-Private Partnership schemes, combined with innovative financing instruments such as green bonds, land value capture, and climate funds, can address the infrastructure financing gap while ensuring long-term sustainability. The paper contributes to urban planning discourse by proposing a strategic framework that integrates fiscal policy, spatial planning, and multi-stakeholder governance for enhanced flood resilience. Findings suggest that decentralized implementation coupled with strong central coordination, clear regulatory frameworks, and community engagement are essential for effective green infrastructure deployment. This research offers actionable insights for policymakers, urban planners, and infrastructure developers in advancing sustainable flood management strategies aligned with Indonesia’s climate adaptation goals and the 2045 vision