Is the name “Yarden” (in English “Jordan”) a “Hebrew name” is it recorded anywhere as being a name that Jews used for themselves?
Answer:
Yarden is of course the name of the Jordan river.
As a name (for girls), the name is not a “traditional” name, and there are no traditional figures who bore it.
Nonetheless, it is a fine Hebrew name, and if you like it there’s no special reason not to use it.
Best wishes.