New NASA satellite images show that the underground water table in the San Joaquin Valley of California is depleting at a faster rate than it is being refilled, reports the Fresno Bee.
Between October 2003 and March 2009, the underground water supply was depleted by more than 30 cubic kilometers of water. One cubic kilometer is about 264.2 billion gallons. According to the Fresno Bee that is enough to meet the residential water needs of about 7.2 million people for a year.
Source: Fresno Bee