FloodZoneMap.org

Flash Flood — San Bernardino, CA

Sep 12, 2022

September 12 flash flood and debris and surveyed areas. Debris flow Oak Glen Potato Canyon Birch creek (caught on video time lapse) which as 100,000 cubic yards of debris. Debris flow Valley of the Falls on Prospect street (death) up to 8 feet high with large boulders. Debris flow on Valley of the Falls road (just up the road shown in survey) which was 10 feet with another 50,000 cubic yards of debris. Debris flow San Gorgonio River (Apple scar) with the several million damage to the water plan

Source: NOAA National Weather Service Storm Events Database (event 1058934). Narrative written by NWS staff at the time of the event.

Flood Risk Context for San Bernardino, CA

This event is one of many recorded floods in San Bernardino County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View San Bernardino County flood data →

More Flood Stories

Flash Flood2 deaths$1.0M damage

San Bernardino, CA · Dec 25, 2003

Steady light to moderate rain began falling over the burned areas of the San Bernardino Mountains on 0600 PST 12/24/03. Approximately 24 hours later, mud, rock, and debris flows were being reported along highways and roads leading into the mountain resort communities.

Read the full account →
Flash Flood1 death$6.0M damage

San Bernardino, CA · Jul 11, 1999

Thunderstorms redeveloped during the afternoon and moved slowly west southwest down the valley. Rainfall rates were high with over an inch of rain falling in less than a half hour. Radar rainfall estimates were near three inches.

Read the full account →
Flash Flood$500K damage

San Bernardino, CA · Aug 20, 2003

Over three inches of rain in less than an hour flooded 19 businesses and 125 homes in Yucca Valley. Twenty-one swift water rescues were performed on people trapped in their vehicles by flood waters.

Read the full account →
Flash Flood1 death$30K damage

San Bernardino, CA · Feb 17, 2017

A strong trough and associated Pacific cold front swept into Southern California from the west, bringing strong winds, heavy snow and rain. The storm was noteworthy for the strong prefrontal southerly winds that produced significant tree damage over the coast and valleys.

Read the full account →