Fire burned about 120 acres near Lower Lake during the weekend, according to a Cal Fire report.
Crews were expected wrap up the remnants of the blaze on Monday, which they'd completely contained on Sunday.
The fire began Friday afternoon at about 1:40 p.m. It burned rural lands east of Highway 29 and south of Morgan Valley Road.
The fire destroyed one outbuilding.
Fire officials still were looking for a cause for the blaze, which drew 285 firefighters, 30 fire engines and other equipment.