- with or in the direction of the current of a river: logs floating downriver.
Origin of downriver
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for downriver
Then, downriver, she saw a canoe gliding over the glistening water.Shaman
He was riding with the advance of Giltner's brigade, double-quicking it downriver to Keller's Bridge.
And in the morning there was a cockleshell of a boat oared in by one of the men who had found it downriver.
Umas-kwitšit-patše and his people slept at Selye'aye-'itš-patše, downriver from them.Seven Mohave Myths
A. L. Kroeber