The Bulldogs forced the Bruins into 17 turnovers to win their 1A Trico League tiebreaker game.
Stevenson (12-9 overall) faces Montesano at 6 p.m. Thursday.
Katie Rathgeber scored 20 points and Cassie MacNab added 18. Jazmine Morat pitched in 14 for the Bulldogs.
White Salmon’s season ends at 12-9.
STEVENSON 64, COLUMBIA-WHITE SALMON 44
COLUMBIA-WHITE SALMON (12-9) — Maggie Bryan 11, Sydney Aman 9, Mya Aman 8, Chloe Clifford 7, Alise Gimlin 4, Teagan Blankenship 4, Keri Hylton 1, Dorothy Carillo 0, Lizbeth Ochoa 0.
STEVENSON (12-9) — Katie Rathgeber 20, Cassie Macnab 18, Jazmine Morat 14, Ashley Brannan 8, Bella Spencer 4, Jade Waymire, Breckon Anderson 0, Jasmine Waymire 0, Ali Backlund 0, Anfisa Schleratski 0.