NET
15 and the slope of the valleys that extends to the dwelling of Ar, and falls off at the border of Moab.”
Darby
15 And the stream of the brooks which turneth to the dwelling of Ar, And inclineth toward the border of Moab.
KJV
15 And at the stream of the brooks that goeth down to the dwelling of Ar, and lieth upon the border of Moab.