COMING SOON
Swale / catchment sizer
A planned free tool to estimate catchment runoff and swale storage from area and rainfall.
This calculator is not available yet. The planned estimate starts with catchment area and rainfall. Swale design also needs site checks for slope, soil infiltration, safe overflow and nearby structures. A volume estimate cannot replace those checks or professional earthworks advice.
Coming soon. This tool is not available yet. No launch date is set.
Use the live climate check ↗Source
Innovative Water Solutions: catchment volume reference, not swale design ↗Research checked 2 November 2026. Product specifications and availability can change.