Jarid Barrett scored four touchdowns as Tumwater built a 48-7 halftime lead en route to a non-league route.
Alex McGarry caught a 71-yard touchdown pass from Garrett McKee in the first quarter that drew Columbia River within 14-7. But the Thunderbirds added two more touchdowns before the end of the quarter.
The loss was the third straight for the Chieftains.
TUMWATER 54, COLUMBIA RIVER 14
River 7 0 0 7–14
Tumwater 28 20 0 6–54
First quarter
T–Jarid Barrett 5 run (Nathan Seaman kick)
T–Trayten Rodriguez 15 fumble return (Seaman kick)
CR–Alex McGarry 71 pass from Garrett McKee (McKee kick)
T–Griffin Shea 6 run (Seaman kick)
T–Barrett 6 run (Seamon kick)
Second quarter
T–Barrett 11 run (kick failed)
T–Shea 23 run (Seaman kick)
T–Barrett 1 run (Seaman kick)
Fourth quarter
CR–Walter Romero 12 pass from Anthony Jenkins (Austin Carter kick)
T–Jacob Holbrook 1 run (kick failed)