Precipitation Evaluation of Round- and Square-patterned Impact Sprinklers

In the fall of 1999, two types of impact sprinklers were evaluated to determine the distribution of precipitation under normal operating conditions. The sprinkler types included a traditional round-patterned design (Rain Bird Maxi-Bird) and a recently developed sprinkler delivering water in a square pattern, called Square Shooter. The squarepatterned sprinkler was more precise in delivering a uniform distribution of water. It accomplished this uniformity using half as many sprinklers as those with the round-patterned design.