The Ventura County Sheriff’s Office said it believes the 33-year-old drowned in an accident at Lake Piru, about 56 miles northwest of downtown Los Angeles.
“The goal is still to bring Ms. Rivera home to her family so they can have some closure,” Deputy Chris Dyer told reporters.
Rivera vanished after she took out a rented platoon boat around 1 p.m. Wednesday with her 4-year-old son, Josey, in the lake, about 56 miles northwest of downtown Los Angeles.
When she didn’t return the boat at 4 p.m., the man she rented the boat from went out to find them, authorities said.
He discovered the boy alone and sleeping on the vessel — while Rivera was nowhere to be found, officials said.
The boy told authorities he went swimming with his mom, but she never got back on the boat.
Deputy Chris Dyer said search efforts began immediately but the operation was temporarily called off due to “dangerous conditions.”
“During the nighttime, the search effort continues with optimal planning and figuring out how to best optimize our resources for today’s effort,” Dyer said.
Dyer said Rivera had been to the lake before and was familiar with the waters.
No foul play is suspected in the case.
Her family, who was on the scene Thurs during the recovery efforts, currently has custody of her son, KTLA reported.
Rivera’s son was from her marriage to actor Ryan Dorsey, whom she divorced in June 2018.