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
Dead River (Michigan) Superior. Additionally, earlier maps record this river either in French as ""Rivière des Morts"", ""Rivière du Mort"", or ""Rivière au Paresseux"", or in English as "Deadman's River". The current name for this river in Ojibwe is either "Giiwe-gamigong-neyaashi-ziibi" (Return-by-shore Peninsula River) or "Niboowaagaming" ("At the Death's Shores"). Dead River (Michigan) The Dead River (French: "Rivière des Morts") is a river in Marquette County, Michigan. Its watershed is approximately in size. The river flows southeasterly from western Marquette County to its mouth on Lake Superior. , five dams existed on the river: Silver Lake Dam, Hoist Dam, McClure Dam, Forestville Dam,