I will shortly be installing a new Rachio 3. Is it possible to roughly calculate the area of a zone from the water usage ? Or what other information would I need ?
I have 14 zones with about 10 Fixed Spray Heads per zone. I measured the usage for one zone for 2 minutes and divided it by the number of nozzles, giving me a flow rate of about 10litres/min. We are currently watering Centipede grass for 20 mins every 2 days during summer.