Sydney Water engaged McGregor Coxall to develop a suite of highly detailed illustrative diagrams to be included within their policy guidelines for connections to Sydney Waters natural stormwater assets. We worked closely with the client and their in house environmental science team to develop 2D and 3D visualisations that are engaging and easy to understand for an audience with a limited technical background. The resulting diagrams are highly effective in distilling and conveying a comprehensive set of technical instructions to a set of coherent and expressive infographics.