Summary

The goal of this mapping effort is to create more accurate fire hazard zone designations such that mitigation strategies are implemented in areas where hazards warrant these investments. The fire hazard zones will provide specific designation for application of defensible space and building standards consistent with known mechanisms of fire risk [...]]]>

Summary

The goal of this mapping effort is to create more accurate fire hazard zone designations such that mitigation strategies are implemented in areas where hazards warrant these investments. The fire hazard zones will provide specific designation for application of defensible space and building standards consistent with known mechanisms of fire risk to people, property, and natural resources. This specific dataset provides proposed zones in SRA, for the purpose of review and comment prior to release of adopted zones.

Description

PRC 4201 – 4204 and Govt. Code 51175-89 direct the California Department of Forestry and Fire Protection (CAL FIRE) to map areas of significant fire hazards based on fuels, terrain, weather, and other relevant factors. These zones, referred to as Fire Hazard Severity Zones (FHSZ), define the application of various mitigation strategies to reduce risk associated with wildland fires. CAL FIRE is remapping Fire Hazard Severity Zones (FHSZ) for State Responsibility Areas (SRA) and Very High Fire Hazard Severity Zones (VHFHSZ) recommendations in Local Responsibility Areas (LRA) to provide updated map zones, based on new data, science, and technology. This specific dataset provides FHSZs within SRA lands only, and represents the proposed zones, subject to changes based on local hearings. A subsequent dataset release will provide the actual adopted zones.

Maps of the proposed zones in SRA are available at: http://frap.cdf.ca.gov/projects/hazard/fhz.html

More information about the project can be found at: http://frap.cdf.ca.gov/projects/hazard/hazard.html

CAL FIRE recoginzes the important contribution of various local government entities that contributed data, maps, and comments that were critical components of the FHSZ mapping process.

Use limitations

This dataset DOES NOT define final adopted zones in SRA – users are cautioned to obtain the adopted zone data when it becomes available for actual decisions related to zones.

natgrid_100m_mj100k

natgrid_100m_mt100k

natgrid_100m_lu100k

100 Meter National Grid for Los Angeles County

This layer was developed by the Fire Department to use in our annual reporting to the state. We must report total incidents by Urban,Suburban, and Rural. Using the State of California formula for urban,suburban was found to be not applicable to Los Angeles County. The [...]]]> Download the shapefile  here: Urban Suburban Rural (zipped shapefile).

This layer was developed by the Fire Department to use in our annual reporting to the state. We must report total incidents by Urban,Suburban, and Rural. Using the State of California formula for urban,suburban was found to be not applicable to Los Angeles County. The state was using census tract to compute the USR and only using population. This worked for them as they had to look at the whole state by county. We used the following variables:

1. Total Population

2. Employment

3 Street miles

4. Housing

We then re-distributed the totals down to a one-mile grid. Then a scoring system for each variable was developed. One  being a low, and ten 10 being the highest. We then totaled up the scores for each category. What we found was that we needed to ‘smooth’  the results to ensure a smooth transition from urban,suburban, and rural. We found that using ESRI’s Neighborhood model was a perfect tool to finalize our results. We documented our methodology and asked the Urban Research Division of Los Angeles County to independently analyze our results. With some minor tweaking the USR layer was approved and is now used for all our reporting.

Download the zipped shapefile: Hosp_entry_pnts.zip

Download the zipped shape file: Los Angeles County Fire Hydrants

Station jurisdictions are the smallest administrative unit of LACoFD.  The areal units are as follows from smallest to largest: Stations, Battalions, Divisions, and Regions. 

This [...]]]> This file contains the Los Angeles County Fire Department’s fire station areas of responsibility.  These are the geographic extents of the fire station jurisdictions.

Station jurisdictions are the smallest administrative unit of LACoFD.  The areal units are as follows from smallest to largest: Stations, Battalions, Divisions, and Regions. 

This file was last updated in February 2011.

Note: These data represent Los Angeles County Fire Stations areas not Los Angeles City Fire Stations areas.

Note: Some fire stations have more than one contiguous area; this is due to areas outside the department’s purview that bisect the jurisdiction.

Fire Station Jurisdiction Areas (zipped shapefile)