As irrigation and evaporation take their toll, prominent rivers are drying up, including the Colorado River in the western United States, the Yangtze in China, the Indus in Pakistan, the Ganges in India, and the Nile in Egypt.
رغم ذلك ،‏ تسرف الدول في تبديد هذه الثروة الى حد ان الانهار الرئيسية بالكاد بقي فيها ماء يصبّ في البحر .‏