Water Equivalents Volume and weight One inch of rain falling on 1 acre of ground is equal to about 27,154 gallons and weighs about 113 tons. 1 acre = 43,560 sq ft Thus, (27,154/43,560) = 0.623 gallons per sq ft or 79 ounces per sq ft So the area of 1,000 sq feet is equal to 624 gallons of rain per inch of rainfall.

Lets Look at AquaGreen

A 2 inch layer of AquaGreen can retain up to 25% of an inch of rain or absorbed irrigation water. Thus, over 1,000 sq feet, there is 156 gallons of water being held in the AquaGreen ready to give back to the plant roots.