the average rainfall is likely close to 0 inches in LA of which almost none is usable for landscape purposes The average rainfall is Los Angeles is 15 inches p

the average rainfall is likely close to 0 inches in LA of which almost none is usable for landscape purposes The average rainfall is Los Angeles is 15 inches per year. Why do you say this is "close to 0"? I would not be surprised if this much water is needed for a 2 acre or smaller sized lawn. 1300 gallons/hour * 24 hours * 365 days/year = 35 acre feet / year. https://www.google.com/search?&q=1300+*+24+*+365+gallons+in+acre+feet https://www.google.com/search?&q=1300+*+24+*+365+gallons+in+... I would be surprised if someone was putting 15 feet of water per year on a lawn! For comparison, the average Southern California golf courses about 3 acre-feet per year: http://www.kcet.org/news/redefine/rewater/drought/drought-fact-check-teed-off-about-golf-courses.html http://www.kcet.org/news/redefine/rewater/drought/drought-fa...