XPDrainage 2019.1 includes a full hydraulic SWMM5 simulation engine that can handle sustainable drainage structures. This means you can do both design and analysis, and therefore scenarios and iterations, all within XPDrainage. You can experiment with placing sustainable drainage structures across your site and see what the impact would be – whether they'll reduce flood risk adequately, and in the most cost effective way, so that the developer will be happy to include them in the design.
Adopting the SWMM5 engine brings you reliable and widely accepted hydraulic analysis of pipes, manholes and – unique to XPDrainage – hydraulic LID structures (also known as SuDS and WSUD). The analysis is significantly faster than the previous XPDrainage engine, saving you time and giving you more confidence in your designs.