I have a 5,450 sf lot, but not on a corner. The sticker in the irrigation controller says to water twice a week and the recommended time for each zone. I think 3 times a week is better, so I took the times, multiplied by 2, and divided by 3 and reset my system to 3 times a week at the resulting reduced time. I use 8,000 to 9,000 gallons per month and everything looks great. However, in June, 2019 we had a lightning strike nearby that screwed up my system and used about 87,000 gallons that month! They replaced the meter and I reset the controller.
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