Flood Zones: Chino vs Hesperia
How do flood zones rules compare between Chino, CA and Hesperia, CA?
Chino has fewer restrictions than Hesperia.
Chino, CA
San Bernardino County
The City of Chino participates in the National Flood Insurance Program (NFIP) and adopts the FEMA Flood Insurance Rate Maps (FIRMs) for San Bernardino County. Most of Chino is mapped Zone X (minimal flood hazard), but Special Flood Hazard Areas (SFHA — Zones A/AE) follow Chino Creek, Mill Creek, San Antonio Channel, Cypress Channel and the Prado Flood Control Basin. The southern edge of the city below elevation 566 ft is within the U.S. Army Corps of Engineers Prado Dam inundation/flowage easement.
View full Chino rules →Hesperia, CA
San Bernardino County
Hesperia regulates development in special flood hazard areas (SFHAs) under Hesperia Municipal Code Chapter 8.28 (Flood Hazard Protections Regulations), implementing the National Flood Insurance Program (NFIP). The city's Floodplain Administrator (Cassandra Sanchez, (760) 947-1059) reviews proposed development in mapped FEMA flood zones. The city's website warns that current FIRMs are out of date and many formerly rural areas lack detailed mapping; a flood map modernization effort is underway. Property-specific flood risk can be checked via the city's GIS viewer at hesperia.geoviewer.io or the FEMA Map Service Center.
View full Hesperia rules →Key Facts Comparison
| Fact | Chino | Hesperia |
|---|---|---|
| NFIP status | Chino participates; FEMA FIRMs for San Bernardino County apply | - |
| State floor | CCR Title 23 Div. 5 §2900 et seq. | - |
| BFE freeboard | Lowest floor ≥ 1 ft above BFE in SFHAs | - |
| Substantial improvement | 50% of pre-improvement market value | - |
| Prado Dam pool | Up to 566 ft elevation (USACE flowage easement in southern Chino) | - |
| Look up your zone | FEMA Map Service Center (msc.fema.gov) | - |
| Local ordinance | - | HMC Chapter 8.28 — Flood Hazard Protections Regulations |
| Floodplain Administrator | - | Cassandra Sanchez, (760) 947-1059 |
| Map status | - | City reports current FIRMs are out of date; modernization underway |
| Federal floor | - | 44 CFR Part 60 (NFIP minimum standards) |
Highlighted rows indicate differences between cities.
Chino FAQ
Is my Chino home in a flood zone?
Most of Chino is in Zone X (minimal hazard), but properties along Chino Creek, Mill Creek, San Antonio Channel, Cypress Channel, and parcels in the southern Prado Basin area can be in Zone A or AE. Enter your address at msc.fema.gov to see the official FIRM panel.
Do I need flood insurance in Chino?
Federally backed mortgages require flood insurance for structures in any Special Flood Hazard Area (A, AE, AO, AH, VE zones). Outside the SFHA it is optional but recommended — homeowner policies do not cover flood damage.
Can I build below the Prado Dam 566-foot line?
U.S. Army Corps of Engineers flowage easements limit habitable structures and certain improvements below elevation 566 ft. Chino zoned much of the affected area for passive recreation / open space after the 2003 dam modification. Contact USACE Los Angeles District and Chino Planning before any work.
What is the BFE+1 rule?
California's NFIP-implementing regulation (CCR Title 23 §2900 et seq.) requires the lowest floor of new residential construction in an SFHA to be at least 1 foot above the Base Flood Elevation shown on the FIRM. This 1-foot 'freeboard' exceeds the federal NFIP minimum.
Hesperia FAQ
How do I find out if my Hesperia property is in a flood zone?
Use the FEMA Map Service Center (msc.fema.gov) by address, the city's GIS viewer at hesperia.geoviewer.io, or call the Floodplain Administrator at (760) 947-1059. The city warns current FIRMs are out of date and detailed mapping is missing in some formerly rural areas.
Can I build in a Hesperia flood zone?
Yes, but development in a special flood hazard area requires review under HMC Chapter 8.28 (Flood Hazard Protections Regulations) and must meet NFIP standards at 44 CFR Part 60 — base flood elevation, anchoring, flood-resistant materials, and no obstruction of regulatory floodways.
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