'Stopped' in the Bible

And there was gathered together much people, and they stopped all the fountains, and the torrent that flows through the midst of the land, saying, Why should the kings of Assyria come and find much water?

And he, Hezekiah, stopped the upper outlet of the waters of Gihon, and brought it straight down to the west side of the city of David. And Hezekiah prospered in all his works.