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Cup Depths and Characteristics
Depth Values (from Catch Cup)
Distribution uniformity describes how evenly irrigation water is applied to your landscape and is expressed as a percentage with 100% representing perfectly even application. Of course, nothing is perfect and we would not ever expect to measure a distribution uniformity of 100% in an actual landscape. However, distribution uniformities of 75% for spray heads and 80% for rotors are achievable and would be considered excellent. If measured distribution uniformities are less than 50% for spray heads and 55% for rotors, scheduling irrigation becomes inefficient and repairs should be made to improve uniformity.
Precipitation Rate/Distribution Uniformity
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