how much water is one acre filled one foot
But what is an acre-foot? One acre-foot equals about 326,000 gallons, or enough water to cover an acre of land, about the size of a football field, one foot deep. An average California household uses between one-half and one acre-foot of water per year for indoor and outdoor use. California receives about 193 million acre-feet of water each year as precipitation (rain and snow), but there is great variability between regions.