Is an overflow necessary?

FAQs

Is an overflow necessary?

Is an overflow necessary?

If the volume of storage provided in the Flo-Well(s) plus surrounding drain rock is greater than the anticipated runoff in the 100-year storm event, then no, an overflow may not be necessary. However, it is not a bad idea to install an overflow to give the runoff a place to go if the system becomes overloaded. The overflow must be installed at an elevation lower than lowest point where the runoff enters the drainage system.