List of hospitals in Illinois. This is a list of hospitals in the U.S. state of Illinois, sorted by name: This list is incomplete; you can help by expanding it.
Run your sprinkler and see how long it takes to get a half inch of water in the can â just like a rain gauge. Usually itâs about 30 minutes. So 20 minutes, 3 times per week will get an inch of water on your lawn, and 30 minutes 3 times per week will get 1 Â½â down. Bear in mind that during extreme heat, you will need to water more, due to evaporation and heat stress on the grass. Water deeply 2-3 times per week, rather than daily.
To measure how much water your sprinkler system puts out in a set amount of time, place tuna cans, rain gauges or straight-sided coffee cans around your lawn. Turn on your sprinkler and let it run for 15 minutes. After turning off the sprinkler, use a ruler to measure the depth of the water collected in your cans.If it's 1/4 inch, you need to run the sprinkler twice as long, or 30 minutes, to spread 1/2 inch of water on your lawn.ost lawns need at least 1 inch of water per week, so if you plan to water twice a week, you must know how long it takes to spread 1/2 inch of water over your lawn.