The answer to 'what is drainage system' is a network of pipes, channels, and other structures designed to effectively manage and control the flow of water around a property. A proper drainage system helps prevent flooding, erosion, and other water-related issues by directing rainwater and groundwater away from the home and landscaping.
Drainage systems typically include components like downspouts, gutters, catch basins, underground pipes, and swales or ditches. They are engineered to collect water from roofs, driveways, and other impervious surfaces, and then transport it to a suitable discharge point like a storm sewer or retention pond. Proper drainage is essential for maintaining a healthy, well-functioning landscape and protecting a home's foundation.