A Pavement Experiment: Pervious Concrete Gutters
Ventura County Government Offices needed to fix some flooding in their parking lot, so they added a pervious concrete retrofit near storm drain inlets and along some gutter areas. It is holding up well, and they are happy with it.
Generally, pervious concrete gutters along side a traditional impervious hardscape area is not a recommended design. Pervious concrete does not have an infiltration rate of a drain or filter, consequently, these applications can become clogged by debris much faster.
Best design practice: impervious area to pervious area ratio is ideal not greater then 2:1.