The document was obtained by The Daily Mail on Thursday, more than three weeks after the 33-year-old “Glee” actress’ body was found floating in Lake Piru in Southern California.
The Ventura County Medical Examiner’s Office previously conducted an autopsy and confirmed Rivera accidentally drowned during a boat trip with her 4-year-old son Josey Dorsey.
The boy, Rivera’s son from her marriage to actor Ryan Dorsey, was found asleep on the pontoon, wrapped in a towel and wearing his life jacket.
He told authorities he and his mom had gone swimming, and that she’d boosted him onto the deck from behind. He then looked back and saw her disappear under the surface of the water.
Authorities spent nearly six days scouring the lake for her remains.
Rivera had no underlying ailments, and no drugs or alcohol were found in her system either, the autopsy found.
She was laid to rest at Forest Lawn Memorial Park in Los Angeles last Friday, according to her death certificate.
Ryan Dorsey, 37, posted a heartbreaking tribute to his ex after her death was confirmed writing, “there’s not enough words to express the hole left in everyone’s hearts.”
“I can’t believe this is life now. I don’t know if I’ll ever believe it,” he wrote on Instagram.
The couple split in 2018 after four years of marriage.