County of Marin - News Releases - Prescribed Fire

For Immediate Release
February 10, 2023

Prescribed Fire Planned Near Mt. Tam

Marin County Fire gears up for controlled burn on Marin Water land

This is a joint news release from the Marin County Fire Department and Marin Water

Corte Madera – In the coming days, the Marin County Fire Department is planning a prescribed fire operation on Marin Water’s Mount Tamalpais Watershed, wielding an important tool in a proactive approach to fire fuel management and a more resilient, ecologically healthy watershed.

Public notification in advance of prescribed fires is critical, especially anywhere near an iconic and highly visible landmark such as Mt. Tam. The sight and smell of smoke may alarm residents and visitors who enjoy views of the mountain. Publicity of a scheduled burn helps quell fears and reduce calls to 911 dispatchers who are busy dealing with emergencies. Advanced public outreach – including Nixle alerts, social media, email, and signage on the watershed – will be activated in an effort to ensure the public is aware of the planned operation.

Firefighter trainees get a briefing about a controlled burn by a battalion chief while standing on a ridgetop overlooking a Marin County neighborhood.The plans call for a burn operation to treat up to 27 acres of overgrown vegetation between Stinson Beach and Mill Valley.

Prescribed fires are carefully planned and must meet strict criteria for ecological benefit, weather parameters, smoke management, and fire safety guidelines. When all conditions are met, trained wildland firefighters conduct the burn while monitoring the set criteria, fire behavior, and designated fire control lines. If implemented, the all-day operation in the Rock Spring area of the Mt. Tam Watershed will be performed by Marin County firefighters, and active patrols and mop-up of the area will continue for several days following the burn. The plans call for the burn operation to treat up to 27 acres of overgrown vegetation between Stinson Beach and Mill Valley on the southwestern edge of the Mt. Tam Watershed. 

Marin County Fire and Marin Water will announce the specific date of the prescribed fire 24-48 hours before the ignition date – a date that is determined through close evaluation of daily and seasonal weather, fuel conditions and other important factors influencing fire behavior. If parameters are not met to conduct the operation, the burn will be delayed until all are met.

Although the operation will strictly adhere to the requirements of the Bay Area Air Quality Management District, the surrounding community may smell or see smoke. Community members should refrain from calling 911 to report this smoke to avoid overwhelming emergency dispatch lines. Once implemented, West Ridgecrest Boulevard will be closed to vehicle traffic, and trails in the immediate vicinity of the prescribed fire will be closed throughout the operation. Watershed visitors are required to heed closure signs.

Marin County Fire Department uses prescribed fire, among other vegetation management approaches, as an efficient and cost-effective way to reduce fuels across large landscape areas where physical and social conditions are conducive to its use. The result can aid firefighters with fire suppression efforts during a wildfire by creating a natural firebreak, which can limit fire spread helping to protect the surrounding community. Learn more about local prescribed fires on the fire department's vegetation management page.

The Marin County Fire Department, in coordination with Marin Water, may conduct more prescribed fire operations on the Mt. Tam Watershed in the years to come as both agencies work to bolster the resiliency of our wildland areas. The agencies will work to inform the surrounding community before any prescribed fire operation is undertaken.

As detailed in Marin Water’s Biodiversity, Fire and Fuels Integrated plan, thinning overgrown vegetation using prescribed fire is an important tool for reducing the risk of catastrophic wildfire on the District’s watershed lands, while also supporting the watershed’s ecological health. High-intensity wildfires have the potential to degrade forests and watershed functions, potentially harming water quality and water supply infrastructure that’s integral to the District’s ability to deliver clean, reliable water to more than 191,000 residents in central and southern Marin County. As with the District’s goat grazing and hand crew-led efforts, prescribed fire creates critical fuel breaks that can slow advancing wildfires, protect neighboring communities and leave less dense, more resilient woodlands behind. Find out more about these efforts at


Todd Overshiner
Battalion Chief
Marin County Fire Department

33 Castle Rock Ave.
Woodacre, CA 94973
(415) 473-6717
Email: Todd Overshiner
Marin County Fire website