The Madera County Sheriff's Office says search and rescue crews found the body of Tara Maguire of Simi Valley late Monday near the Rock Creek Campground.
Deputies responded to a call for help from a stranded motorist Monday, and were told by 20-year old Scott Mason and 18-year-old Jacob Banaga that Maguire had been missing for about 24 hours.
Authorities say both men acknowledged being on a multi-day methamphetamine binge, and search crews quickly found Maguire's body in a nearby creek.
Investigators are still determining how she died.
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Both men are being held in Madera County Jail.