Over the last couple of days, we have been performing an irrigation audit on our system. An irrigation audit is the procedure of collecting and analyzing information concerning the uniformity of application, precipitation rate, and general condition of an irrigation system and its components. This data is then used to determine a plan for maximum irrigation efficiency.
How is the audit performed?
First, twenty-four containers are set an equal distance apart on the green. Then, the irrigation system is run for a designated time. Next, the water collected in the containers is measured and the data is then put into a spreadsheet. Finally, a series of formulas determine the precipitation rates and distribution uniformity, which indicate how efficiently the irrigation heads are functioning.
Why is this information helpful?
Knowing the precipitation rates of the irrigation heads allows me to set the proper run time for the nighttime watering schedule. During the summer months it is not uncommon to have some high evapotranspiration days. This typically occurs on sunny, low humidity days when the plants are losing a significant amount of water through evaporation and transpiration. If the plant loses .15" of water throughout the day, I want to replace that exact amount of water that night. In order to do this, I need to know precipitation rates of the irrigation heads. I can then calculate the proper run time and water just enough to keep the plants healthy and to keep conditions as firm as possible.
How is the audit performed?
First, twenty-four containers are set an equal distance apart on the green. Then, the irrigation system is run for a designated time. Next, the water collected in the containers is measured and the data is then put into a spreadsheet. Finally, a series of formulas determine the precipitation rates and distribution uniformity, which indicate how efficiently the irrigation heads are functioning.
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| Mike measuring the amount of water collected on #1 green |
Knowing the precipitation rates of the irrigation heads allows me to set the proper run time for the nighttime watering schedule. During the summer months it is not uncommon to have some high evapotranspiration days. This typically occurs on sunny, low humidity days when the plants are losing a significant amount of water through evaporation and transpiration. If the plant loses .15" of water throughout the day, I want to replace that exact amount of water that night. In order to do this, I need to know precipitation rates of the irrigation heads. I can then calculate the proper run time and water just enough to keep the plants healthy and to keep conditions as firm as possible.