Dead Sea 342 parts per thousand (in 2002), and a temperature that swung between and . Underneath a zone of transition, the lowest level of the Dead Sea had waters of a consistent temperature and complete saturation of sodium chloride (NaCl). Since the water near the bottom is saturated, the salt precipitates out of solution onto the sea floor. Beginning in the 1960s, water inflow to the Dead Sea from the Jordan River was reduced as a result of large-scale irrigation and generally low rainfall. By 1975, the upper water layer was saltier than the lower layer. Nevertheless, the upper layer remained
Red Sea–Dead Sea Water Conveyance build a "pilot" pipe 180 km long from the Red Sea to the Dead Sea. The pipe would pump 200 million cubic metres per year. Half of this would be desalinated for Jordanian consumption and half put into the Dead Sea. In October 2009 the Jordanian government announced that it would unilaterally tender a Jordan Red Sea Project (JRSP). According to the government, this project could be considered as the first phase of the Red Sea–Dead Sea Project. The project is to be implemented by a private company under authority granted by the government. The project would also serve as