'Water courses' in the Bible

The king’s heart is like channels of water in the hand of the Lord;He turns it whichever way He wishes.

And they will spring up among the grassLike willows by the streams of water.’

Alien tyrants of the nations have cut it down and left it; its foliage has fallen on the mountains and in all the valleys and its branches have been broken in all the ravines of the land. And all the nations of the earth have come from under its shade and have left it.

I will bring them out from the nations and gather them from the countries and bring them to their own land; and I will feed them on the mountains of Israel, by the streams, and in all the inhabited places of the land.