'Water gate' in the Bible

As for the Nethinims, they dwelt in Ophel, unto the Watergate, toward the east and to the tower that lieth out.

Now when the seventh month drew nigh, and the children of Israel were in their cities, all the people gathered themselves together as one man upon the street before the Watergate, and said unto Ezra the scribe that he should fetch the book of the law of Moses, which the LORD commanded to Israel.

And read therein in the street that is before the Watergate, from the morning until the noon day before men and women, and such as could understand it: and the ears of all the people were inclined unto the book of the law.

And the people went up, and fetched them, and made them booths, every one upon the roof of his house, and in their courts, and in the courts of the house of God, and in the street by the Watergate, and in the street by port Ephraim.

toward the Wellgate, and they went up over against them upon the steps of the city of David at the going up of the wall to the house of David, unto the Watergate Eastward.