Step-pool rain garden work

Quick answer：

A step-pool rain garden is a type of landscape design that incorporates a series of stepped depressions to capture and manage stormwater runoff. These gardens are designed to mimic the natural processes of a meandering stream, allowing rainwater to slowly infiltrate the ground, reducing runoff and promoting groundwater recharge. They often feature plants that are adapted to wet conditions and can filter pollutants from the water.