'Upper' in the Bible

So the Lord told Isaiah, "Go out with your son Shear-jashub and meet Ahaz at the end of the conduit of the upper pool which is located on the road to the field where they wash and dry cloth.

The king of Assyria sent his chief adviser from Lachish to King Hezekiah in Jerusalem, along with a large army. The chief adviser stood at the conduit of the upper pool which is located on the road to the field where they wash and dry cloth.