Marin County Multi-Jurisdictional Local Hazard Mitigation Plan

Community Development Agency

Hazard mitigation is any sustained action taken to reduce or eliminate long term risk to life and property resulting from natural hazards.


  • Community Updates

In 2018, Marin County and its partners published a Multi-Jurisdictional Local Hazard Mitigation Plan (MCM LHMP) to assess risks posed by natural hazards and to develop a mitigation strategy for reducing the County’s risks. The County prepared the MCM LHMP in accordance with the requirements of the Disaster Mitigation Act of 2000 (DMA 2000). The Marin County Sheriff’s Office of Emergency Services (OES), in conjunction with the Marin County Local Hazard Mitigation Team, coordinated the preparation of the MCM LHMP in cooperation with municipalities and special district partners. The MCM LHMP replaced the County LHMP that was approved by FEMA on August 29, 2013 and serves as the current LHMP for all participating jurisdictions. Some participating jurisdictions also have existing single-jurisdiction plans in place that are effective until their expiration date. All MCM LHMP partners are included in an ongoing MCM LHMP plan review process to facilitate the 2023 plan update process.

2023 MCM-LHMP Update Process

The Disaster Mitigation Act of 2000 requires that all Local Hazard Mitigation Plans be updated on a five-year cycle. The County has recently begun the process that will conclude with the adoption of an updated MCM-LHMP in Spring of 2023. As part of this update process, the County was awarded a $250,000 Hazard Mitigation Planning Grant from the Federal Emergency Management Agency and the California Office of Emergency Services. This funding will provide for a more robust planning process as we work towards the 2023 iteration of the plan.

Specifically, the following activities are funded by the grant;

  1. Assessment of bulkheads surrounding Tomales Bay to determine their structural integrity and continued capability to protect homes, roadways and other assets from flooding;
  2. Feasibility studies of nature-based and structural strategies for protection of sea level rise and storm-related flooding at Tomales Bay;
  3. Multi-Jurisdictional Repetitive Loss Area Analysis to summarize historical flood damage to insured buildings, and identify potential mitigation actions;
  4. Comprehensive finished floor elevation inventory to assess West Marin building flood vulnerabilities;
  5. Assessment of fire behavior and vulnerability to private and public structures utilizing newest Lidar mapping and analysis, worst case weather scenario, defensible space and building data for siding and roof types. This will be completed with an updated 2020 Community Wildfire Protection Plan (CWPP).

The update process will include a robust public engagement process, including a minimum of four public meetings over the next several years focused on specific hazards and mitigation options. The County has also launched the MCM-LHMP Virtual Engagement System Session 2021: an online platform to provide information to residents of Marin County on potential vulnerability to natural disasters, strategies to cope with those hazards, and a framework to prioritize mitigation goals and strategies.

The first public meeting of the 2023 MCM-LHMP update process was held on February 2, 2021. The meeting was focused on fire hazards and the 2020 update to the Marin County Community Wildfire Protection Plan. Meeting materials can be found below:

  • Slide deck
  • The draft Community Wildfire Protection Plan and accompanying StoryMap can be found here
  • A recording of the afternoon meeting
  • A recording of the evening meeting

Please stay tuned for future opportunities to engage with this planning process. Contact Heather Dennis for further information.

Presentation by Governor’s Office of Planning and Research

On April 22, 2021, staff from the Governor’s Office of Planning and Research and the Office of Emergency Services met with planning directors from Marin County’s cities and towns to discuss the overlap in the new General Plan Safety Element requirements and the Local Hazard Mitigation Plan, as well as how to coordinate our approaches and integrate the safety element update process with the housing element update. You can find a recording of the meeting here.

For more information about this event or LHMP and Safety Element coordination, contact Leslie Lacko.