If sprinklers are not delivering even coverage, what is an appropriate corrective action?

• A. Reposition and retest to ensure even coverage
• B. Increase run time
• C. Decrease irrigation frequency
• D. Use higher water pressure

Answer: (A)

When coverage is not even, the most effective fix is to reposition the sprinkler heads and retest to confirm uniform distribution. Adjusting where and how each head sprays helps create the necessary overlap so every area receives water rather than just increasing overall water output. After moving heads, run a test (like a catch-can test) to verify that the distribution is even across the zone. If issues persist, inspect for obstructions, misaligned arcs, or damaged heads, and adjust accordingly. Increasing run time or water pressure doesn’t address the spatial layout of water delivery and can lead to runoff or overspray, while changing frequency doesn’t fix uneven dispersion.