Rivergrove, CA
How exposed is Rivergrove to wildfire?
Rivergrove sits at the 89th percentile nationally for wildfire risk to structures — in USFS's highest wildfire-risk band nationally — per USFS's Wildfire Risk to Communities model, built from its 167 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Rivergrove at the 90th national percentile — 1 points above its risk-to-structures score, a gap driven by how much is actually built there.
Where Rivergrove's buildings actually sit
85.6% of Rivergrove's 167 buildings sit in USFS's Direct exposure zone, roughly 143 structures close enough to burnable vegetation for flame contact, not just embers — 14.4% fall in the Indirect, ember-only zone and 0% are Minimal.
Where Rivergrove ranks
Rivergrove's 89th national percentile looks worse in isolation than its 58th ranking inside California does — this place is on the milder end for its own state, by 31 points. Among the 31,521 US communities USFS scores, Rivergrove ranks 3,551 for wildfire risk (1 is highest) and 26,124 by building count (1 is largest). Within California alone, it ranks 657 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Rivergrove and the insurance market
Because Rivergrove is in California, a wildfire-hazard disclosure is legally required before a sale closes here — unusual nationally, since only these two states mandate it. The state's FAIR Plan alone carried 668,609 policies by the end of 2025. Full detail in the disclosure-law guide.
What would actually reduce this score
Because Direct exposure dominates in Rivergrove (85.6%), the highest-leverage fix is defensible space, not roofing or vents alone — covered in the home-hardening guide.
More on how this number was built
The methodology guide shows exactly how USFS turned 167 counted buildings into the percentiles shown above for Rivergrove. For more on what direct exposure implies beyond Rivergrove, see the exposure-zones guide.