"The water in the Dead Sea is extremely salty, and has been estimated to be the saltiest major body of water in the world. Its name is derived from the fact that the water is far too salinated for marine inhabitation. The Dead Sea is naturally endorheic (no outlet streams) with the Jordan River being its only major source. The northern part of the Dead Sea receives scarcely 100 mm (4 inches) of rain a year; the southern section receives barely 50 mm (2 inches). Due to the man-made reduction of the Jordan River (the river waters are 70-90 % used for human purposes) and the high evaporation rate of the Dead Sea, the sea is shrinking. Although the Dead Sea would never entirely disappear (because evaporation slows down as surface area decreases and saltiness increases), measures are currently being proposed to siphon water from the Red Sea through a series of tunnels or canals in order to replenish the rapidly shrinking waters and provide water and electrical power to the surrounding countries."