A catchment basin, also known as a retention basin or detention basin, is a large water storage facility designed to collect and hold stormwater runoff. There are different types of catchment basins, each with distinct characteristics and features. Other terms commonly used to refer to catchment basins include infiltration basin, bioretention basin, and rain garden. Infiltration basins are designed to allow water to percolate through the soil, while bioretention basins are planted with vegetation. Rain gardens are smaller-scale catchment basins designed to capture and absorb rainwater for plant growth. Whatever the terminology used, catchment basins play a crucial role in managing stormwater runoff and reducing the risk of flooding and erosion.