WaterProof: A rapid return on investment tool for Nature-based Solutions

IWA NbS, Basins, Water Management

Target Audience

IWA members and non-members, IWA SGs, IWA YWP Community, Utilities, Practitioners, Engineers and Consultants working with NbS.


Nature-based solutions (NbS) have the potential to cost-effectively address growing water security issues in thousands of water basins around the world while providing a variety of co-benefits to nature and people. There is an urgent need to scale these solutions globally, but NbS are still not on the same playing field as grey solutions in terms of knowledge and funding. Progress is, in part, slowed by the complexity and time required to demonstrate an NbS portfolio’s positive return on investment for water security outcomes.

The WaterProof platform was designed to address this hurdle by drastically reducing the time and money needed to conduct a pre-feasibility level ROI (i.e., return on investment) assessment from tens of thousands of dollars, and months of time, to no cost and results within minutes.

This webinar by The Nature Conservancy (TNC) will introduce attendees to the WaterProof platform, walk them through example applications and provide an opportunity for asking questions directly to the platform developers.

Learning Objectives

The presentations and discussion in this webinar will equip participants to:

  • Understand how nature-based solutions can be part of the solution set for sustainable water security;
  • Access and explore the WaterProof platform;
  • Identify how and when WaterProof might be helpful for the development of a holistic water security plan;


Additional Resources

WaterProof platform virtual course: available here.

Q&A report: TBA

Webinar presentation slides: available here.

Past IWA webinars:



The International Water Association & The Nature Conservancy


  • Kari Vigerstol, Director of Water Security Science, The Nature Conservancy, USA
  • Carlos Rogéliz, Integrated Water Resources/Basin Management Leader, The Nature Conservancy, Colombia
  • Brooke Atwell, Associate Director, The Nature Conservancy, USA