What does the term 'arc' refer to in irrigation systems?

The term 'arc' in irrigation systems refers to the surface area that a sprinkler head covers with water. This concept is significant because it describes the portion of the landscape that receives water from the sprinkler's discharge pattern. Understanding the arc is essential for determining coverage efficiency and ensuring that all areas of a garden or landscape receive adequate watering without overlap or dry spots.

When discussing irrigation, knowing the arc helps in planning the layout of the sprinkler system to optimize water use, prevent waste, and promote healthy plant growth. Each sprinkler head may have a defined arc, influencing how many heads are required in an area to achieve uniform coverage. Therefore, recognizing the role of the arc in efficient irrigation design is crucial for any irrigation technician.