Certified Landscape Irrigation Auditor

What aspect of wind is critical to consider for irrigation systems?

1. Color and sound

2. Velocity and impact

3. Direction and velocity

4. Height and breadth

The correct answer is: Direction and velocity

When evaluating the impact of wind on irrigation systems, understanding both direction and velocity is paramount. The direction of the wind influences where the water from irrigation is dispersed, potentially leading to uneven watering or water drifting away from the intended area, thereby reducing efficiency and effectiveness. For instance, if the wind is blowing towards a neighbor's property, it can cause water to be wasted or lead to water not reaching the desired plants. Velocity, or the speed of the wind, is equally critical. High wind speeds can create significant evaporation losses, meaning that water intended for the landscape may evaporate before it even reaches the soil. Moreover, strong winds can alter the spray pattern of irrigation systems, particularly those that use sprinklers, which can lead to uneven distribution of water and inadequate coverage. Together, considering both the direction and velocity of wind helps in designing and managing irrigation systems more effectively, ensuring that water is applied where it's needed most and minimizing waste.