The Jordan River. Modified from http://www.un.org/Depts/Cartographic/map/profile/israel.pdf 
Cross-checked with other maps, especially in the area of the Hula swamp and the tributaries:

Image:Golan 92.jpg from the CIA
[1] from the University of Texas
[2] from [3]
[4] from [5]
[6] from [7]
http://www.un.org/Depts/Cartographic/map/profile/israel.pdf
Own work