LAKE ARROWHEAD, Calif. (VVNG.com) — An 18-year-old male was pronounced deceased at a local hospital after he went underwater while swimming with family at Lake Arrowhead and failed to resurface, officials said.
The incident occurred on the afternoon of Tuesday, July 8, 2025, in the North Bay area of Lake Arrowhead.
Deputies from the Twin Peaks Sheriff’s Station responded alongside personnel from the San Bernardino County Fire Department and patrol boats from the Arrowhead Lake Association.
Deputies determined that the teen had been swimming when a family member noticed he had submerged and did not resurface, according to a written statement from the San Bernardino County Sheriff’s Department.
A search was initiated, and members of the Sheriff’s Dive Team located and recovered the male.
Life-saving measures were immediately performed, and the teen was transported to a nearby hospital where he was later pronounced deceased.
Authorities urge anyone with information regarding this incident to contact the Twin Peaks Station at (909) 336-0600. Callers who wish to remain anonymous can contact the We-Tip Hotline at 1-800-78-CRIME (27463).
The investigation remains ongoing.
UPDATE 7/10 — The San Bernardino County Coroner’s Office identified the deceased as Diego A. Cortes, a resident of Rancho Cucamonga.
Related Article: GoFundMe Launched for Diego Cortes, Teen Who Drowned at Lake Arrowhead
