2 Chronicles 32:4

32:4 A large number of people gathered together and stopped up all the springs and the stream that flowed through the district. They reasoned, “Why should the kings of Assyria come and find plenty of water?”

2 Chronicles 32:30

32:30 Hezekiah dammed up the source of the waters of the Upper Gihon and directed them down to the west side of the City of David. Hezekiah succeeded in all that he did.