Here are five questions to help you decide how big your rain barrel should be. If you can collect rain water from 1000 square feet of roof and a typical rainfall is one inch then a 623 gallon barrel will capture most of the typical rainfall. (1000SF x 1/12 feet = 83.3 cubic feet or 623 gallons). Here are five questions you should ask before installing a rain barrel.
Best Time to Water. The best time of day to water your lawn is in the early morning, from 6:00 to 8:00 a.m. Watering in the morning gives wet blades of grass time to dry out over the course of the day, reducing the possibility of fungal problems. Morning is also the coolest and least windy time of day, which means that the water you apply is less likely to be lost to evaporation.
Diagnose Your Lawn. Not all lawns need the same amount of water. It's important to know that your lawn's health depends as much on soil conditions as on the kind of seed you use. In worst-case water-shortage scenarios, Centipede grass, Bermuda grass, and Bahia and St. Augustine grasses have relatively modest needs.