Grow in concert with nature : green water defense for flood risk management in East Asia

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Courtesy of IWA Publishing

This summary note presents the key concept and approach of Green Water Defense for flood risk management in East Asia. East Asia is home to more than a quarter of the world's population. It saw impressive economic growth in the past decade, accompanied by rapid population growth and urbanization. As a result, land and water resources in this region are under increasing pressure leading to over-exploitation, use conflicts, and other water insecurity issues. The purpose of the 'green water defense in East Asia' study is to take stock of advances in management practices, institutional and technological innovations for managing water resources under changing climate. The focus of this note is on green water defense for flood risk management in deltas and other areas vulnerable to flooding. Green Water Defense is an adaptive management philosophy and approach which seeks to spatially integrate natural forces and artificial interventions, and to balance incentive based and supply-driven measures, with minimum footprints and externalities in sustainably providing water services and managing related climate risks. It is enlightened by the green growth thinking and builds on a number of other concepts and approaches, including: a) live with nature and build with nature; b) green adaptation and low impact development; c) Integrated river basin and coastal zone management; d) productivity-based agricultural water management (produce more with less); and e) water-sensitive urban design and eco-dynamic design.

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