Genesis 2:10-14

And a river went out of Eden to water the garden; and from thence it was parted, and became four heads. The name of the first is Pishon: that is it which compasseth the whole land of Havilah, where there is gold; and the gold of that land is good: there is bdellium and the onyx stone. And the name of the second river is Gihon: the same is it that compasseth the whole land of Cush. And the name of the third river is Hiddekel: that is it which goeth in front of Assyria. And the fourth river is the Euphrates.