http://www.potsaa.com/prairie-green/

How many inches of water per week should take a lawn in a hot prairie to stay healthy, thick and green?
2-3 inches a week and it is best to water early in the morning (between 6 and 7 hours) even if the middle of summer, your lawn is a little shabby not fertilize. fertilizing your lawn will dry even more. if your having trouble with your lawn try to fertilize with a high phosphorus spring and autumn (the middle number in lawn fertilizer) it contributes to the growth of roots, the rule of thumb the deepest roots of the better. Finally and most importantly make sure not to cut the lawn too short to keep at least 2 1 / 2 inches long
“Prairie Green Golf Course (Prairie Green)” Flyover Tour