Hebrew media reports indicate that three girls entered the water, but the current quickly became overpowering.
Only one of the three managed to swim to shore.
After losing contact with her friends, the girl who escaped the water alerted the authorities, prompting the dispatch of rescue teams and police to the area.
The search for both girls is currently ongoing.
Following two hours of searching the surface of the river and its banks, Israel Fire and Rescue Services announced that divers are now preparing to search the riverbed to enhance the rescue efforts.
This is a developing story.