Blackhawk

Community in Contra Costa County

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Report created October 27, 2026 at www.firezones.info/community/06928/blackhawk

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    11% Very High

    Most of the Very High land is in the Local Responsibility Area, where Contra Costa County adopts the zones CAL FIRE recommends.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    13% has burned

    Most recently the 1981 Blackhawk Fire, which burned 31 acres here, one of 2 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    5% Extreme

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

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Land by hazard class

  1. Very High 393 acres · 121 state, 272 local 11%
  2. High 1,389 acres · 826 state, 563 local 37%
  3. Moderate 903 acres · 45 state, 858 local 24%
  4. Non-wildland 1,020 acres · Local Responsibility Area 28%

3,704 acres of land in all, 992 in the State Responsibility Area and 2,712 in the Local. State zones are the ones the State Fire Marshal designated, in effect since 1 April 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

Fires that burned here

  1. 1970 Tassajara Fire 446 acres
  2. 1981 Blackhawk Fire Of 2,361 acres in all · Cause: Arson 31 acres

In all, 477 acres of Blackhawk have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data

Nearby areas

ZIP codes in Blackhawk

Neighboring communities

  1. Blackhawk 11% Very High · this area
  2. Camino Tassajara 10% High
  3. Danville 12% High · <1% Very High
  4. Diablo 60% High · 1% Very High
  5. San Ramon 12% High