A former Stanford University student and swimming champion is facing up to 10 years in prison after he was convicted of raping an unconscious woman he met at a campus party last year, Santa Clara County officials said Wednesday.

A jury found Brock Allen Turner guilty of three counts of sexual assault in Santa Clara County Superior Court on Wednesday afternoon, officials said.

“Today a jury of Santa Clara County residents gave a verdict which I hope will clearly reverberate throughout colleges, in high schools, anywhere where there may be any doubt about the distinction between consent and sexual assault,” District Attorney Jeff Rosen said in a statement. “No means no, drunk means no, passed out means no, and sex without consent means criminal assault.”

Two graduate students riding bikes on Lomita Court around 1 a.m. Jan. 18, 2015, found Turner, a 19-year-old freshman at the time, on top of a partially clothed woman in a field near campus fraternity houses.

“She was lying on the ground unconscious, not moving,” Deputy District Attorney Alaleh Kianerci said when Turner was accused that month.

Both students restrained Turner as he tried to get away and called police, Kianerci said. The woman, who is not a student, was taken to a hospital and treated for her injuries.

Turner smelled of alcohol when he was arrested and told police he had seven cans of beer that night and thought he was having consensual sex with the woman, who authorities said was breathing but “completely unresponsive” as she lay near a tree and a trash bin.

“He stated that he was drunk but was able to remember everything,” the police report says. “His head was a little fuzzy due to the effects of the alcohol, but he consciously decided to engage in the sexual activity with victim. He was having a good time with victim and stated that she also seemed to enjoy the activity.”

The woman told police she had four whiskey shots and two shots of vodka that night but couldn’t remember anything after talking to a few guys at a Kappa Alpha party, according to a police report.

Turner withdrew from school Jan. 27, 2015, the day prosecutors announced he would be charged, university officials said, adding he is no longer allowed on campus.

Stanford University had come under fire in the past for a lax response to campus sexual assault. Between 1997 and 2009, just four of 175 reported sexual assaults were formally adjudicated at Stanford, with two of the alleged attackers held responsible, according to a report by Michele Landis Dauber, a Stanford law professor.

California became the first state to pass legislation that shifted the standard of consent for sexual activity at colleges from whether a person said no to whether both partners said yes. The “yes means yes” law applies only to campus disciplinary hearings, not to state criminal proceedings.

Turner, who worked as a lifeguard, was a heavily recruited athlete before joining Stanford’s high-powered swimming program, ranked 10th in the nation. He had been a dominant swimmer at Oakwood High School in Dayton, Ohio, twice winning the state championship in the 200- and 500-yard freestyle. He also took part in the 2012 U.S. Olympic trials.

Turner is out on $150,000 bail, officials said. His sentencing is scheduled June 2.

San Francisco Chronicle staff writer Kurtis Alexander contributed to this report.