Firefighters battling to contain Marin County wildland blaze

A Calfire tanker dropped flame retardant on a fire Tuesday. A Calfire tanker dropped flame retardant on a fire Tuesday. Photo: Marin County Fire Department Photo: Marin County Fire Department Image 1 of / 3 Caption Close Firefighters battling to contain Marin County wildland blaze 1 / 3 Back to Gallery

Several dozen firefighters are battling a 10-acre blaze that broke out in a remote part of western Marin County Tuesday morning on Marin Municipal Water District land, officials said.

At 1:07 p.m., 50 firefighters were on scene attacking the wildland blaze, and another 35 firefighters from two Cal Fire hand crews were on the way to help.

The fire, which was reported by a park ranger shortly before 10:30 a.m., is burning near Kent Lake, about two and a half miles south of San Geronimo and about two miles southeast of Lagunitas, according to the Marin County Fire Department.

No structures are threatened and no injuries have been reported, the Fire Department reported about 12:19 p.m. The nearest home is about two and a half miles from the fire, officials said.

The blaze is moving slowly and mainly burning brush and grass, according to Deputy Fire Chief Mark Brown of the Marin County Fire Department.

Cal Fire air crews were drawing water from the nearby lake to dump on the fire. They were also using air tankers to bombard hot spots with fire retardant, department officials said. The first of the aircraft arrived at 11:15 a.m.

Fire crews hope to have the blaze contained by 6 p.m. and under control by Wednesday morning, the Marin County Fire Department estimated.

Filipa Ioannou is a San Francisco Chronicle staff writer. Email: fioannou@sfchronicle.com Twitter: @obioannoukenobi