Erin Baker had a game-high 22 points and Sydney Flores-Tucker added 15 as the Chieftains stay alive in the 2A district tournament with a consolation victory.
Baker and Flores-Tucker combined for 10 of the team’s 12 3-pointers, including seven in the first half.
River put the game away with a 23-7 fourth-quarter spurt.
The Chieftains faces Black Hills at 5:30 p.m. Friday at Mark Morris in another loser-out contest.
COLUMBIA RIVER 68, ROCHESTER 46
ROCHESTER — Madison Bates 2, Megan Elkins 11, Lexi Jones 13, Sadie Knutson 1, Paige Winter 15, Emily Elkins 2. Totals 14 (4) 14-19 46.