Certified Storm Water Operator Practice Exam

Implementing green roofs and permeable pavements is a highly effective method for reducing impervious surfaces in urban areas. These solutions allow for better water infiltration and absorption, which helps to mitigate stormwater runoff. Green roofs involve covering building roofs with vegetation, which not only reduces the amount of impervious surface but also improves air quality and provides insulation. Permeable pavements, on the other hand, are designed to allow water to pass through the surface, enabling it to infiltrate the ground rather than running off into drainage systems. This approach helps replenish groundwater and reduces the burden on storm sewer systems, effectively managing stormwater in urban environments.

In contrast, increasing concrete surfaces would only exacerbate the problem of runoff, as it contributes to a larger area of impermeable material. Developing underground drainage systems may help manage runoff but does not actually reduce impervious surfaces. Similarly, removing vegetation from urban sites can create more impervious surfaces and negatively affect the local ecosystem and water balance. Thus, focusing on green roofs and permeable pavements is key to sustainable urban development and effective stormwater management.