The 22-year-old recorded her 24th consecutive podium finish.
The medal is the Wanaka native's second in as many days in Colorado.
The victory was the Olympic champ's fourth slopestyle gold medal at the event.
The snowboard sensation showed nerves of steel in her final run to seal a podium finish.
She was presented with the Lonsdale Cup - the first winter sport athlete to achieve the honour.
The Olympic gold medallist has eight podium finishes in as many starts this season so far.
The man fell five metres into a crevasse while snowboarding alone in Switzerland.
The 21-year-old was in vintage form at the freeriding event at British Columbia.
The 20-year-old impressed in her first event in nine months after a leg injury.
