Red Sea–Dead Sea Water Conveyance number of international donors. The water level in the Dead Sea is shrinking at a rate of more than one metre per year, and its surface area has shrunk by about 30% in the last 20 years. This is largely due to the diversion of over 90% of the water of the Jordan River. In the early 1960s, the river moved 1,500 million cubic metres of water every year from the Sea of Galilee to the Dead Sea. Dams, canals, and pumping stations built by Israel, Jordan and Syria now divert water for crops and drinking, and have reduced the
Dead Sea in the northern part of the Dead Sea and barely in the southern part. The Dead Sea zone's aridity is due to the rainshadow effect of the Judaean Mountains. The highlands east of the Dead Sea receive more rainfall than the Dead Sea itself. To the west of the Dead Sea, the Judaean mountains rise less steeply and are much lower than the mountains to the east. Along the southwestern side of the lake is a tall halite formation called "Mount Sodom". There are two contending hypotheses about the origin of the low elevation of the Dead Sea. The older