A woman found unresponsive in the water at Highland Springs Reservoir is thought to have drowned. Lakeport Fire Protection District units were dispatched just before 2 p.m. Sunday after a female had been found face down in the water at the south end of the reservoir. Bystanders were giving her CPR when firefighters arrived. The woman, identified as 42-year-old Kay Hill of Clearlake, was taken to Sutter Lakeside Hospita,l where she was pronounced dead. A spokesperson for the Lake County Sheriff’s office said the official cause of death will be released after an autopsy.