Which characteristic best describes a well-designed drainage system?

A well-designed drainage system is characterized by its ability to efficiently manage water flow and prevent flooding. This involves careful planning and construction to ensure that water is directed away from structures, roads, and other critical areas, minimizing the risk of water accumulation that can lead to flooding, property damage, and other safety hazards.

Effective drainage systems are designed to handle expected rainfall and runoff volumes, incorporating elements like grading, drainage pipes, catch basins, and retention basins. These features work together to control water movement, ensuring that excess water is channeled away quickly and that it does not overwhelm localized areas. This proactive approach not only protects properties but also maintains the integrity of roadways and landscaping.

In contrast, other characteristics such as maximizing flooding, focusing solely on aesthetics, or choosing the cheapest options might overlook the primary functionality of a drainage system. These factors can lead to ineffective drainage solutions that may increase the risk of flooding or water damage over time.