A campus rain garden design case refers to a specific example or project where a rain garden has been implemented on a university or school campus. Rain gardens are designed to capture and filter stormwater runoff, helping to reduce pollution in nearby water bodies. These gardens typically incorporate native plants that can withstand wet and dry conditions, and are strategically placed to maximize the collection of rainwater. The design may include elements such as rainwater harvesting systems, permeable pavements, and educational signage to promote water conservation and stormwater management practices.