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natural infrastructure


The Natural Infrastructure for Aquifer Recharge Financial Calculator, is an excel based tool with a flexible financial model that estimates the private costs and benefits, including the return on investment (ROI), of natural infrastructure interventions designed to enhance aquifer recharge. The technical note explains the methods, data and assumptions used to produce the tool.

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Green infrastructure like forests, wetlands and coral reefs can help traditional “gray infrastructure” perform better. Yet, green-gray infrastructure projects remain relatively niche, mainly because of persistent myths about their costs and feasibility.


Incorporating natural infrastructure into water management plans can cost-effectively improve infrastructure system performance and resilience.


This guide was developed for technical advisors to government officials, business people, investors, and others who need to draw on ecosystem assessments to inform decision-making. It assesses several types of ecosystem service modeling tool, discusses issues involved in modeling ecosystem services, and provides guidance on how to choose the right model to address a specific policy question. The guide outlined five steps to help decide which model to use in a particular decision-making context. It especially targets advisors and decision-makers in developing countries who are not experts in ecosystem service modeling and who have limited information and technical resources but must make decisions about natural resource management in relation to ecosystem services.


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