2 Chronicles 32:2-4

2 And when Hezekiah saw that Sennacherib came, and that he intended to fight against Jerusalem,

3 he took counsel with his rulers and his mighty men to stop the waters of the fountains which were outside the city. And they helped him.

4 So there was gathered together many people. And they stopped all the fountains, and the brook that flowed through the midst of the land, saying, Why should the kings of Assyria come, and find much water?