What range of flow rates do rotating sprinklers apply?

• A. 0.5 - 1.5" per hour
• B. 0.4" - 0.8" per hour
• C. 0.25" - 0.5" per hour
• D. 1.0" - 2.0" per hour

Answer: (B)

Rotating sprinklers typically apply water at a rate that falls within the range of 0.4 to 0.8 inches per hour. This moderate flow rate allows for more efficient watering because it gives the soil enough time to absorb the moisture without saturating the surface, which can lead to runoff and waste. This rate is especially effective for delivering water to plant roots, thereby promoting healthy growth while conserving water.

The flow rate of rotating sprinklers is designed to be appropriate for various landscaping types and conditions, ensuring that water is applied evenly over a given area. This efficiency aligns with best practices in water conservation and effective landscape management, which is a key focus of the Qualified Water Efficient Landscaper (QWEL) training.

In comparison, other ranges provided do not accurately represent the typical flow characteristic of rotating sprinklers, reinforcing why the specified rate of 0.4 to 0.8 inches per hour is recognized as the standard for this irrigation method.