Certified Storm Water Operator Practice Exam

Bio-retention systems are designed to manage stormwater runoff effectively while providing ecological benefits. The use of native plant species that can tolerate both wet and dry conditions is ideal for these systems. Native plants are adapted to the local climate and soil conditions, making them more resilient and requiring less maintenance once established. They support local wildlife, including pollinators, and contribute to biodiversity, which is crucial in maintaining a balanced ecosystem.

These plants play a significant role in absorbing excess water, filtering pollutants, and improving water quality before it enters waterways. Additionally, their root systems help stabilize soil, reduce erosion, and enhance infiltration, further promoting effective stormwater management. In contrast, invasive species can disrupt local ecosystems, while fast-growing annuals may not provide the long-term stability and benefits associated with perennial native plants. Hybrid species that are selected solely for aesthetics may not thrive in stormwater conditions and could lack ecological functionality.