'Water gate' in the Bible
Now, the Nethinim, were dwelling in Ophel, - as far as over against the water-gate, on the east, and the tower that projecteth;
Then all the people gathered themselves together as one man, into the broad way that was before the water-gate, - and they spake unto Ezra the scribe, to bring the book of the law of Moses, which Yahweh had commanded Israel.
and read therein, before the broad place which was before the water-gate, from the time it was light, until the noon of the day, in presence of the men and the women, and such as had understanding, - and, the ears of all the people, were unto the book of the law.
So the people went forth, and brought in, and made themselves booths, every one upon his roof, and in their courts, and in the courts of the house of God, and in the broad place of the water-gate, and in the broad place of the gate of Ephraim.
and, over they fountain gate and straight before them, they went up by the stairs of the city of David, at the going up of the wall, - above the house of David, even as far as the water-gate, eastward.