What is one effect of soils on stormwater runoff?

Soils play a crucial role in managing stormwater runoff, particularly in how they can significantly reduce water quality issues. When stormwater infiltrates soil, several beneficial processes occur. The soil acts as a natural filter, capturing pollutants such as sediments, nutrients, and heavy metals. This filtration reduces the concentration of contaminants that would otherwise be carried directly into nearby water bodies, helping to improve overall water quality.

Additionally, soils can enhance water retention through their structure and texture. This capacity for infiltration allows for more water to be absorbed rather than surface-runoff, which further diminishes the potential for flooding and erosion, contributing to healthier local ecosystems.

Other options do not accurately reflect the nature of soils and their interaction with stormwater. For instance, soils do not prevent any runoff entirely; rather, they manage it. They also do not inherently add chemicals to runoff but may interact with pollutants. Finally, while urban developments can increase impervious surfaces, which exacerbates runoff, this is not a characteristic of soils themselves. Instead, healthy soil contributes positively to stormwater management.