Riverside

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 11,117 acres · 8 state, 11,109 local 21%
  2. High 2,712 acres · Local Responsibility Area 5%
  3. Moderate 3,535 acres · Local Responsibility Area 7%
  4. Non-wildland 34,768 acres · Local Responsibility Area 67%

  52,132 acres of land in all, 8 in the State Responsibility Area and 52,124 in the Local. State zones are the ones the State Fire Marshal designated, in effect since April 1, 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

• Fire history

  The 10 largest of 25 fires that burned here

  Map
  1. 1959 Hillside Fire 1,061 acres in total 831 acres here
  2. 1963 Unnamed fire 593 acres in total 425 acres here
  3. 1981 Spruce (Assist) Fire 1,709 acres in total 405 acres here
  4. 1980 Unnamed fire 416 acres in total 247 acres here
  5. 1980 Treemont Fire 536 acres in total 234 acres here
  6. 1963 Unnamed fire 957 acres in total 219 acres here
  7. 1980 Quail Fire 200 acres here
  8. 2013 Jurupa Fire 362 acres in total 181 acres here
  9. 1963 Unnamed fire 629 acres in total 166 acres here
  10. 1968 Unnamed fire 810 acres in total 164 acres here

  And 15 smaller fires. The most recent was the 2024 Clay Fire, which burned 15 acres here. In all, 2,813 acres of Riverside 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