Mitigating Fire Risks with CalTopo Teams

How one county uses CalTopo Teams to design a detailed project map.
The threat of wildfires looms large in Northern California, where the scars of past incidents like the North Bay Fire Siege in 2017 and the Paradise Fire in 2018 serve as stark reminders of the potential for sudden and deadly firestorms.
However Marin County is taking a proactive approach to fire mitigation, where the initial phase of a crucial fuel reduction project lays the groundwork for a more resilient and fire-safe community. Phase two is already in the works, mapped out in the above image.
“CalTopo Teams is the most important collaboration tool we have, allowing us to share data across numerous stakeholders and reducing the potential for error or cost overages.” – Michael St. John, MWPA
Responding to Urgency:
In response to the increasing threat of wildfires, Marin County took a decisive step by passing a parcel tax for a large fire mitigation project called the Greater Roth Valley Shaded Fuel Break. This financial commitment, influenced by the harrowing events of the North Bay Fire Siege and Paradise Fire, reflects the community’s determination to prevent and mitigate the impact of future fires.
One significant outcome of the initial phase is the creation of an 11-mile fire break around the northwestern communities of Marin. The Marin Wildfire Prevention Authority (MWPA) leads the effort.
Planning for Impacts to Cultural History, Biology, and Neighbors
Clearing the land would have a major impact on local cultural sites, flora and fauna. The MWPA set out to work closely with other local stakeholders to protect the environment and people that live nearby.
- Indigenous Peoples Involvement: To protect cultural sites, the MWPA seeks knowledge from the local Miwok Indian tribe to refine the location of the fire break.
- Ecology: Biologists give input about effects on rare plants, and geoscientists provide guidance on areas prone to landslides.
- Landslide Concerns: Potential landslide areas were marked on the map as teal-colored polygons, and the description indicates the appropriate type of treatment for the area as well as potential hazards below the site if it were to slide.
- Environmental Compliance: All work needs to meet the stringent requirements of the California Environmental Quality Act (CEQA), and good recordkeeping and spatial recording helps to ensure compliance.
- Land Ownership: Parcel data and added markers with comments help keep track of who owns nearby properties, access corridors to work site, and permissions for treatment.
Scroll through the gallery images to see how the MWPA uses CalTopo for their project map.
Operational Details:
Cost Planning and Contractors
With a workforce of 50 individuals in full swing, the project incurs an approximate cost of $12,000 per acre. With this much investment, the MWPA recognized the importance of keeping track of progress, invoicing, and reporting. CalTopo fills that role without undue additional costs.
Mapping and Documentation
The project utilizes CalTopo for collaborative mapping and documentation, so that crews conducting work could easily record progress and office personnel had a clear picture of this in real time. Colored zones indicate treatments, before-and-after pictures, and recording tracks while flagging areas provides a comprehensive overview of the specific area a person covers; there’s no guesswork. Compliance personnel constantly monitor the map to ensure adherence to regulations, with real-time updates that facilitate effective communication.
Community Engagement
Engaging with the community is an important aspect of the project, and CalTopo helps facilitate this by allowing MWPA to have notes and Right-to-Enter permits at the ready. By distributing printed maps to residences ahead of treatment, residents are kept informed about upcoming treatments in the neighborhood and backyards.
Conclusion
The threat of wildfire is at the forefront of the thoughts of communities in the wildland-urban interface across the country. Mitigation efforts are now a top priority in many jurisdictions, and a range of agencies, contractors, and the public must collaborate to reduce the potential impacts.
CalTopo is able to capture the details of these ever-evolving projects on one platform, and help land managers, community leaders, and residents understand the scope, need, and impact of mitigation treatments.








The tornado touched down Friday night near the town of Idabel, pulling down trees, destroying farms, and trapping folks in their homes. A sheriff’s officer made a phone call to McDaniels saying “You gotta get down here. It’s bad.” The officer’s patrol vehicle had been totally destroyed by the twister. While responding to the scene, McDaniel received another phone call from Aaron Blue at the Coalgate Fire Department – they were on their way and were making a plan in a mapping program called CalTopo. 








