What is the objective of diverting harmful sheet flow runoff?

Diverting harmful sheet flow runoff aims to direct it to stormwater systems. Stormwater systems are designed to manage and treat runoff in a way that minimizes its negative impacts on the environment and public health. When sheet flow runoff is uncontrolled, it can carry pollutants such as sediment, nutrients, and toxins into natural water bodies, leading to degradation of water quality and harm to aquatic ecosystems. By channeling this runoff into stormwater management systems, it can be treated or managed appropriately, reducing pollution and helping to recharge groundwater or prevent surface flooding.

The other choices, while they may have relevance in the broader context of stormwater management, do not specifically address the primary objective of diverting sheet flow runoff. Enhancing soil quality, decreasing flooding risks, and improving aesthetic values are important aspects of stormwater management, but they come as secondary benefits when runoff is effectively managed and directed through established systems. The immediate objective remains to channel harmful runoff appropriately for effective treatment and management.