Also known as a rain garden, is a type of green infrastructure that is designed to manage stormwater runoff from developed areas. It is a shallow depression filled with soil and vegetation that collects, filters, and treats stormwater runoff. The garden is constructed with an underdrain system to prevent the soil from becoming waterlogged and to facilitate excess water to percolate into the ground. The underdrain system is connected to the stormwater system, ensuring that the garden does not become a breeding ground for mosquitoes.

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