'Canal' in the Bible

Then the Lord said to Isaiah, “Go out to meet Ahaz [king of Judah], you and your son Shear-jashub, at the end of the aqueduct of the Upper Pool, on the highway to the Fuller’s Field;

In that day the Lord will whistle for the fly that is in the mouth of the rivers and canals of Egypt and for the bee that is in the land of Assyria.

And the king of Assyria sent the Rabshakeh [his military commander] from Lachish [the Judean fortress commanding the road from Egypt] to King Hezekiah at Jerusalem with a large army. And he stood by the canal of the Upper Pool on the highway to the Fuller’s Field.