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 Access Red Sea–Dead Sea Access The Red Sea–Dead Sea Access is a series of highway construction projects intended to bring easy transportation and prosperity to Jordan, Israel, Palestine and the surrounding area. An agreement was signed in Amman on October 24, 1974, between the Retired Servicemen Engineering Agency (RSEA) of Taiwan and the Jordanian government, under which a new "road to friendship" will be built in the southern part of the Hashemite Kingdom. Yen Hsiao-chang, RSEA director, and Ahmad Shobaki, Jordanian minister of public works, signed the agreement for the construction of the highway. Under the agreement, RSEA will build the