In the southwest region of this country, an irrigation system is one of the most critical components of a golf course. Of the many components that comprise an irrigation system, the sprinkler head is responsible for applying water to the turfgrass. Many factors impact the performance of a sprinkler and one that has been identified as an issue at Arrowhead Country Club is spacing. We spent several months last season measuring triangulation and relocating the sprinklers that water the green's surface. The Toro 700 series sprinkler present on the course is capable of a 70' throw at 65 psi with correct nozzles. What we discovered was that every green had a minimum of one spacing issue and that most sprinklers did not have the correct nozzles installed to provide specified performance. The head spacing distances ranged from 58' to 96'. The photos below indicate correct and incorrect spacing and how that can impact water application.
Stretched spacing:
Correct spacing:
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