shrinking. Main environmental issues Reduction of water flow The flow rate of the Jordan River once was 1.3 billion cubic metres per year; as of 2010, just 20 to 30 million cubic metres per year flow into the Dead Sea. Pollution A small section of the northernmost portion of the Lower Jordan, the first ca. below the Sea of Galilee, has been kept pristine for baptism and local tourism. Most polluted is the 100-kilometre downstream stretch—a meandering stream from above the confluence with the Yarmouk to the Dead Sea. Environmentalists say the practice of letting sewage and brackish water flow into the river has almost destroyed its ecosystem. Rescuing the Jordan could take decades, according to environmentalists. In 2007, FoEME named the Jordan River as one of the world's 100 most endangered ecological sites, due in part to lack of cooperation between Israel and neighboring Arab states. Roads, border crossings, bridges Roads Route 90, part of which is named after Rehavam Zeevi, connects the northern and southern tips of the Israeli-occupied West Bank and parallels the Jordan River on the western side. Border crossings (open bridges) There are two border crossings between Israel and Jordan which cross the river over bridges. The northern one, Jordan River Crossing or Sheikh Hussein Bridge is near Beit She'an; the southern one, Allenby Bridge (also King Hussein Bridge), is near Jericho. Bridges (historical; modern - open and closed) North to south: Daughters of Jacob Bridge (Hebrew: Gesher Bnot Ya'akov, "Daughters of Jacob Bridge") is the most famous one within Israel Arik Bridge at the northern end of the Sea of Galilee; allows access to the central Golan Heights, was crucial in the 1967 and 1973 wars Al-Sinnabra, at the spot where the river used to exit the Sea of Galilee in the past; few remains excavated by archaeologists Jisr el-Majami' north of Beit She'an/Beisan; closed Damiya or Adam Bridge halfway between Jericho and Beit She'an; closed King Abdullah Bridge south of the Allenby Bridge; closed. Importance as a water source Until the first decade of the 21st century, the waters of the Jordan River had been the largest water resource for Israel; lately, desalinated sea water from the Mediterranean has taken over this role. Israel's National Water Carrier, completed in 1964, has delivered water from the Sea of Galilee to the Israeli coastal plain for over four decades, until prolonged drought led to abandoning