Which of the following is true about impervious surfaces?

Impervious surfaces are defined as materials that do not allow water to pass through them. This includes surfaces like concrete, asphalt, and other built materials that effectively block water infiltration into the ground. When it rains, these surfaces prevent rainwater from percolating into the soil, often leading to increased surface runoff. This runoff can contribute to flooding and water pollution as it carries contaminants from the impervious surfaces into storm drains and natural water bodies.

The understanding of impervious surfaces is crucial in site planning and landscape architecture because they significantly influence water management in urban and suburban environments. Managing impervious surfaces and designing areas to mitigate their impact, such as through the incorporation of permeable materials or green infrastructure solutions, can be vital in promoting effective stormwater management and environmental sustainability.