I wonder if this could then be describing a spring of water. In Gaza, for instance, there is a Waheb El Wadia.
(RSV Num 21:13-18) 13 From there they set out, and encamped on the other side of the Arnon, which is in the wilderness, that extends from the boundary of the Amorites; for the Arnon is the boundary of Moab, between Moab and the Amorites.
14a Wherefore it is said in the Book of the Wars of the LORD,
14b "Waheb in Suphah, and the valleys of the Arnon, 15 and the slope of the valleys that extends to the seat of Ar, and leans to the border of Moab."
16a And from there they continued to Beer;
16b that is the well of which the LORD said to Moses,
16c "Gather the people together, and I will give them water."
17 Then Israel sang this song: "Spring up, O well! -- Sing to it! -- 18 the well which the princes dug, which the nobles of the people delved with the scepter and with their staves."