Definition of FEN. : low land that is covered wholly or partly with water unless artificially drained and that usually has peaty alkaline soil and characteristic flora (as of sedges and reeds).
The average American family uses more than 300 gallons of. water per day at home. Roughly 70 percent of this use occurs. indoors. In addition, there are other miscellaneous uses of water in the house which may be very significant, depending on the. degree of water conservation by the household.
As a rule of thumb in U.S. water management, one acre-foot is taken to be the planned water usage of a suburban family household, annually. In some areas of the desert Southwest, where water conservation is followed and often enforced, a typical family uses only about 0.25 acre-feet of water per year. One acre-foot/year is approximately 893 gallons (3.38 mÂ³) per day.