Red Seal Landscape Horticulturist Practice Exam

How can landscape practitioners effectively manage water runoff?

1. By creating large paved areas

2. By implementing rain gardens and permeable paving systems

3. By increasing the use of concrete

4. By disregarding landscape slopes

The correct answer is: By implementing rain gardens and permeable paving systems

Implementing rain gardens and permeable paving systems is an effective way for landscape practitioners to manage water runoff. Rain gardens are designed to absorb rainwater from impervious surfaces like roofs, driveways, and sidewalks, allowing it to infiltrate into the soil rather than running off into storm drains. This not only helps to reduce the volume of runoff but also allows for natural filtration of pollutants, improving water quality. Permeable paving systems, on the other hand, allow water to pass through the surface and seep into the ground beneath. This method helps to mitigate surface runoff by minimizing the amount of water that enters drainage systems, thus reducing the risk of flooding and erosion. Collectively, these approaches align with sustainable landscaping practices, promoting environmental conservation and enhancing local ecosystems by replenishing groundwater and maintaining hydrological balance. In contrast, creating large paved areas and increasing the use of concrete would hinder water absorption and increase runoff, leading to potential flooding and water quality issues. Similarly, disregarding landscape slopes could exacerbate runoff problems by not utilizing natural drainage patterns effectively.