Further developing guidance for NbS design and implementation, and tools to facilitate the inclusion of NbS in planning and policy frameworks, for example using web-based decision support approaches, combining real-time monitoring and control systems, scenarios with NbS and grey infrastructure or different levels of implementation to help understand investment needs, or at the metropolitan level with, e.g., user-friendly valuation tools for the evaluation of risk reduction and guidance on measures to spur demand for NbS. Such tools should reflect on the working realities of planners and decision-makers. Another focus should also be on expanding existing planning and design tools, which are already accepted and applied by, e.g., adding a component or module of NbS.
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