GoodFlow · Precast Stormwater Systems

Turn your project requirements into a GoodFlow parts specification.

Enter what your project needs and get back the exact StormArc parts and quantities to build it, sized straight from GoodFlow's engineering logic.

What you get

The parts list (chambers, arches, risers, closure walls), storage volume achieved, system dimensions, a general-arrangement drawing, and liner & geotextile options when a liner is required.

Save & get advice

Create an account to save projects, and request a review from a GoodFlow engineer directly on any saved design.