What is the purpose of an interceptor drain?

The purpose of an interceptor drain is to divert seasonal groundwater away from absorption areas, making this choice the correct one. Interceptor drains are designed to manage subsurface water that could saturate or flood certain areas, thereby protecting structures, landscapes, or facilities. By redirecting this groundwater, they help maintain the integrity of soils and prevent excessive moisture from overwhelming septic systems or other drainage methods that rely on infiltration.

In contrast, while enhancing aesthetic appeal is important for property value, it does not pertain to the primary function of an interceptor drain. Similarly, providing drainage for surface runoff is more related to traditional stormwater management systems rather than the specific role of interceptor drains in managing groundwater. Finally, while preventing floodwaters from entering urban areas is a critical function of urban drainage systems, interceptor drains specifically address groundwater issues rather than surface floodwaters, distinguishing their purpose further.