01 / ANNUAL TRACE
California Debris Flow reports by year
NOAA recorded 601 California Debris Flow reports across the complete 2016–2025 period.
CA EVENT-TYPE FILE2016—2025
CALIFORNIA
Debris Flow reports
NOAA recorded 601 county-coded Debris Flow reports across 43 California reporting areas from 2016 through 2025, including 173 reported injuries and 27 reported fatalities in the official archive.
Source: NOAA Storm Events details table · Complete years 2016–2025 · Compiled 16 Sep 2026
Reports601county-coded rows
County areas43represented
Injuries173direct + indirect
Fatalities27direct + indirect
03 / COUNTY BREAKDOWN
All California records →Local California Debris Flow analyses
The directory lists 43 California reporting areas represented in this statewide Debris Flow record.
Sonoma58 reportsExplore →Kern51 reportsExplore →Santa Cruz47 reportsExplore →San Bernardino42 reportsExplore →Fresno40 reportsExplore →Mariposa30 reportsExplore →Monterey29 reportsExplore →Riverside25 reportsExplore →Santa Clara24 reportsExplore →San Diego21 reportsExplore →Marin21 reportsExplore →Los Angeles21 reportsExplore →Napa19 reportsExplore →San Mateo18 reportsExplore →Mono18 reportsExplore →Alameda14 reportsExplore →Tulare12 reportsExplore →Plumas11 reportsExplore →Contra Costa9 reportsExplore →Madera8 reportsExplore →Alpine8 reportsExplore →Orange8 reportsExplore →Santa Barbara7 reportsExplore →El Dorado7 reportsExplore →Ventura6 reportsExplore →Siskiyou6 reportsExplore →Butte5 reportsExplore →Nevada5 reportsExplore →