Verses with the word river's in the Old Testament (4 verses):

Exodus 2:3
And when she could not longer hide him, she took for him an ark of bulrushes, and daubed it with slime and with pitch, and put the child therein; and she laid it in the flags by the river's brink.

Exodus 2:5
And the daughter of Pharaoh came down to wash herself at the river; and her maidens walked along by the river's side; and when she saw the ark among the flags, she sent her maid to fetch it.

Exodus 7:15
Get thee unto Pharaoh in the morning; lo, he goeth out unto the water; and thou shalt stand by the river's brink against he come; and the rod which was turned to a serpent shalt thou take in thine hand.

Numbers 24:6
As the valleys are they spread forth, as gardens by the river's side, as the trees of lign aloes which the LORD hath planted, and as cedar trees beside the waters.