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Flood risk and storm water in Murrieta

Built from Riverside County flood, weather and housing records, with what each figure means for your home.

In Murrieta, 6% of homes were built before 1980, compared with 57% across California.

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  • Water removal, drying and repair

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Technical drawing of flood damage restoration: flooded basement cleanup, storm water cleanup and crawl space water removal.
Flood Damage Restoration covers flooded basement cleanup, storm water cleanup and crawl space water removal.

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  1. Call (833) 728-2327

    Tell the person who answers what got wet and where the water came from. Calls are answered 24/7.

  2. Stop the source

    You get help shutting off the water or the power to a wet room while the crew is on the way.

  3. Inspection and written estimate

    Moisture readings, photos and a written estimate come before any work begins.

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A guide for water damage restoration in Murrieta and the towns around it.

By FEMA's estimate, inland flooding costs homes and businesses in Murrieta's ZIP codes about $153 a year per $100,000 of building value.

Murrieta and water from outside

Murrieta's flood figures describe rare but sharp storms. NOAA climate normals show about 3 days a year with an inch of rain or more, yet NOAA storm reports logged 90 days with flash flood or flood reports in Riverside County from 2016 to 2025. When hard rain falls on dry, graded ground, it runs off fast, and channels and low streets can overflow before drains catch up.

FEMA's National Risk Index puts the city's yearly inland flood loss at 153 per $100,000 of building value, below the county's 238 but above the state's 149. FEMA has declared 8 major disasters for floods and storms in Riverside County since 2000. FEMA flood insurance records show 0.2 claims per 1,000 homes in the county from 2016 to 2025, and 0.5% of county homes carry federal flood insurance, so few owners there have a flood policy to claim on.

Runoff that gets inside is Category 3 water. It brings mud, debris and possibly sewage, so the restoration crew removes wet drywall, insulation, carpet and pad and disinfects what stays. A standard homeowners or renters policy excludes it, and only flood insurance pays. For flood damage restoration in the Murrieta area, ask the crew to photograph the water line before anything is removed.

FEMA and NOAA figures for Murrieta

Calls for the Murrieta area come from 87 ZIP codes; the figures below are the city's own.

Seasonal and vacation homes make up 2% of the housing in Murrieta.

4% of homes in Murrieta are mobile or manufactured homes.

Freezing nights come about 9 times a year in Murrieta's ZIP codes, compared with 9 across California.

  • 6% Homes built before 1980Riverside County: 30% Murrieta6%Riverside30%CA57%
  • 153 Yearly inland flood loss per $100,000 of building valueRiverside County: 238 Murrieta153Riverside238CA149
  • 37,306 Housing units
  • 111,621 Residents
  • 2% Homes kept for seasonal or occasional useRiverside County: 7% Murrieta2%Riverside7%CA2%
  • 4% Mobile and manufactured homesRiverside County: 9% Murrieta4%Riverside9%CA4%
  • 9 Nights a year at or below 32 degreesRiverside County: 6 Murrieta9Riverside6CA9
  • 1% Homes built before 1950Riverside County: 4% Murrieta1%Riverside4%CA14%
  • 13% Homes in buildings with 5 or more unitsRiverside County: 12% Murrieta13%Riverside12%CA24%

Sources: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates; FEMA OpenFEMA, FIMA NFIP Redacted Claims v3, claims from 2016 to 2025 (not endorsed by FEMA); FEMA OpenFEMA, NFIP Residential Penetration Rates v1 (not endorsed by FEMA); FEMA National Risk Index v1.20, December 2025 (not endorsed by FEMA); NOAA NCEI, U.S. Climate Normals 1991-2020, nearest weather station; FEMA OpenFEMA, Disaster Declarations Summaries v2 (not endorsed by FEMA); NOAA NCEI Storm Events Database, 2016 to 2025.

Lowering the risk in Murrieta

Only 6% of Murrieta homes were built before 1980, so storm prep here is less about old pipes and more about how newer lots shed water. Landscaping added after a house is finished can tilt soil back toward the slab. Before the rainy months, check that soil and pavers slope away from the walls, clear out each downspout and extend it so it empties well away from the foundation.

If your home has a sump pump or window wells, test them. Pour water into the sump pit to confirm the pump starts, and add battery backup in case a storm cuts power. Clear debris from window wells and cover them. Mobile and manufactured homes make up 4% of the city's housing and 9% across Riverside County, and their owners should keep the skirting vents clear and store valuables off the floor.

Look up your address on FEMA's flood map, even outside a mapped flood zone. FEMA notes a 30-day waiting period before a new flood policy starts, so it has to be in place before the season, not during a storm. With 9 nights a year at or below 32 degrees, insulate hose bibs and any pipe along an outside wall too.

When water does get in, shut off the main valve, cut power to wet rooms and photograph the damage. Ask for water mitigation to start within 24 to 48 hours. The slab has to read dry on a meter before water-damaged floor repair begins, and that rule holds for water removal in Menifee as well.

Records to keep before a flood

Before storm season, look up your address on the FEMA Flood Map Service Center to see its flood zone, and keep a copy. Walk through the house with your phone and record each room, including the basement, the furnace and the water heater. Keep your policy numbers, the main water shutoff location and the breaker panel location written down somewhere you can reach without power. Move papers, photos and electronics off basement floors. If a flood comes, those records make cleanup and any claim faster, and they help the restoration company see what the rooms looked like before the water. Floodwater that reached hardwood or laminate usually means floor water damage repair after drying.

What Murrieta callers ask about floods

What does a FEMA flood risk rating mean for my Murrieta home?

FEMA's National Risk Index rates counties and census tracts for hazards such as riverine and coastal flooding, from very low to very high, using expected losses and community factors. It describes the area, not one house: a low lot or a basement can flood in a lower-rated area. Check your own FEMA flood zone too.

How do I keep storm water out of a Murrieta basement?

Most basement water from storms comes from runoff at the foundation. Point downspouts away from the house, keep the yard sloping away, test the sump pump and its backup, and seal cracks and window wells.

Is flood cleanup different from other water damage?

Yes. Outside floodwater is Category 3 under the IICRC S500 standard, so carpet, pad, insulation and drywall below the water line are removed rather than dried, and hard surfaces are disinfected. Sewage and chemicals in floodwater are why the crew wears protective gear.

What should I do after floodwater gets into my Murrieta home?

Keep out of the water until the electricity to the area is off. Floodwater counts as contaminated, so wear boots and gloves if you must go in. Photograph the water line, then call for extraction and drying; soaked porous materials below the line are usually removed.

Where can I check the flood zone for a Murrieta address?

On the FEMA Flood Map Service Center at msc.fema.gov: type the address to see its flood zone and the map's date. FEMA's National Risk Index adds a county and ZIP view of expected flood losses. A low-risk zone is not a no-risk zone; water from heavy rain still reaches basements outside mapped flood areas.

Related Murrieta guides

Every Murrieta water damage guide

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Answered 24/7, with a written estimate before any work starts.

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