Joshua 15:5

And the east border [was] the salt sea, [even] unto the end of Jordan,.... To the place where Jordan fell into it; so that this border was the whole length of the salt sea, which Josephus says y was five hundred eighty furlongs; and, according to Pliny z, an hundred miles:

and [their] border in the north quarter [was] from the bay of the sea,

at the uttermost part of Jordan; this northern border began where the eastern ended, at the bay or creek of the sea, where Jordan fell into it.

y De Bello Jud. l. 4. c. 8. sect. 4. z Nat. Hist. l. 5. c. 16.