Handy Water Figure to Know

I'm harvesting rain water and found this that lets me figure how much
water to put on my beds this summer.

# "If we take 1 square foot of ground, 12" X 12" and have 1 inch of
rain, we end up with .623 gallons of water. There are 43,560 square
feet in each acre of ground. With a one inch rain that gives 27,137.88
gallons per acre."

Charlie