What defines an "impervious surface"?

What defines an "impervious surface"?

• A. Surfaces that allow water to infiltrate
• B. Surfaces that trap moisture
• C. Surfaces that do not allow water to infiltrate
• D. Surfaces that slow down water flow

Answer: (C)

An impervious surface is defined as a surface that does not allow water to infiltrate, meaning that water cannot seep through it to the underlying soil or groundwater. These surfaces are typically solid and engineered materials such as concrete, asphalt, and certain types of roofing. Because impervious surfaces do not permit water infiltration, they contribute to increased runoff during rainfall events, leading to potential issues such as flooding and water quality degradation in nearby bodies of water. This characteristic is crucial in hydrology, especially in urban planning and stormwater management, as it helps determine how water moves across landscapes and its impact on the environment. The other choices describe surfaces that either promote moisture retention or allow infiltration, which are not applicable to the definition of an impervious surface.

An impervious surface is defined as a surface that does not allow water to infiltrate, meaning that water cannot seep through it to the underlying soil or groundwater. These surfaces are typically solid and engineered materials such as concrete, asphalt, and certain types of roofing. Because impervious surfaces do not permit water infiltration, they contribute to increased runoff during rainfall events, leading to potential issues such as flooding and water quality degradation in nearby bodies of water. This characteristic is crucial in hydrology, especially in urban planning and stormwater management, as it helps determine how water moves across landscapes and its impact on the environment. The other choices describe surfaces that either promote moisture retention or allow infiltration, which are not applicable to the definition of an impervious surface.