ADHD begins in childhood and often lasts into adulthood. As many as 2 out of every 3 children with ADHD continue to have symptoms as adults. Symptoms of ADHD can differ from person to person, but there are three basic types of ADHD. Each one is identified by the symptoms of hyperactivity, impulsivity, and inattention.
Convert acre-feet to other major units of volume. A unit used to measure volumes of water, typically for use in irrigation. One acre-foot is the amount of water that would cover an acre of land to a depth of 1 foot, = 43,560 cubic feet, approximately 325,851 U.S. gallons (approximately 1233.48 cubic meters).
How do I convert between gallons and acre-feet? One acre-foot is equivalent to one-acre of water that is one-foot deep. An acre is a measure of surface area that totals 43,560 square feet. An acre can be of any shapeâa rectangle, a triangle, a circle, or even a starâso long as its area is exactly 43,560 square feet.