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.
Kui ka niisutamine ja aurustumine oma osa võtavad, kuivavad suured jõed, nagu Colorado Ameerika Ühendriikide lääneosas, Jangtse Hiinas, Indus Pakistanis, Ganges Indias ja Niilus Egiptuses.