Geographical Differences of nowadays and future needs of water and its relation with water Crisis in the Arab homeland

. . 500 3 / 337 3 / 140 3 529 3 . 2000 + 2 3 2010 62 3 - 280 3 2030 . . Water is considered a source of life . This research concentrates on the future need of water . It reflects the shortage of water in the Arab Homeland and that will be a reflection of the multi sources and their geographical differences .Water source becomes one of the most important aspect so as to avoid the shortage of water .Water needs are increased because of the agriculture , industry and the increase of population . The person's share of water is 500 m3 year in the previous century , but in the twenty first century is 337 m3 year .This amount will decrease in the coming period .It is clear that the amount of water is about 140 billion m3 . The need for water in the coming three decades is 529 billion m3 .In 2000 , there was an over need for water of about 2 billion m3 , but in 2030 . there will beashortage of about 280 billion m3 to 2030 .For that , we should be do the best and put the plans to solve the problem by the use of the substitutions and construct water project and belittle the use of water . We can also solve the problem by transferring water from one area to another .