Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback
    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    California High Hazard Zones (Tier 2)

    Metadata Updated: November 23, 2025

    On October 30, 2015 Governor Brown issued an emergency declaration requiring public agencies to identify areas of tree mortality that hold the greatest potential to result in wildfire and/or falling trees and threaten people and property in these areas. Once identified, these areas will be prioritized for removal of dead and dying trees that present a threat to public safety.

    Tier Two high hazard zones are defined by watersheds (HUC 12, average 24,000 acres) that have significant tree mortality as well as significant community and natural resource assets. Work at the Tier Two level addresses the immediate threat of falling trees and fire risk, and also supports broader forest health and landscape level fire planning issues.
    This service represents the latest official release of HHZ. It will be updated annually when a new version is released. As of June 2019, it represents HighHazardZones19_1.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date July 23, 2025
    Metadata Updated Date November 23, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 23, 2025
    Metadata Updated Date November 23, 2025
    Publisher CAL FIRE
    Maintainer
    Identifier edf642d4-fe21-4a94-be24-eb8b4ea450b3
    Data First Published 2017-06-12T23:18:45.000Z
    Data Last Modified 2025-07-11T16:39:13.000Z
    Category Fire, Natural Resources
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id fdf859fa-cd33-4dc7-82e0-cd08bbb8173e
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash f476eb61a6d1925f51389c41b6f24482445b4ced0dd3917cd54d4e37f3656945
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.