Flood Zones: Chino vs Rancho Cucamonga
How do flood zones rules compare between Chino, CA and Rancho Cucamonga, CA?
Chino has fewer restrictions than Rancho Cucamonga.
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 →Rancho Cucamonga, CA
San Bernardino County
Rancho Cucamonga participates in the National Flood Insurance Program and enforces FEMA Special Flood Hazard Area rules in Alta Loma alluvial fan areas. New construction in Zone A requires elevation certificates.
View full Rancho Cucamonga rules →Key Facts Comparison
| Fact | Chino | Rancho Cucamonga |
|---|---|---|
| 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) | - |
| Code section | - | RCMC 19.20 |
| Hazard areas | - | Alta Loma alluvial fans |
| Freeboard | - | 1 foot above BFE |
| Certificate | - | Licensed surveyor |
| Contact | - | (909) 477-2740 |
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.
Rancho Cucamonga FAQ
How do I check if my property is in a flood zone?
Use the FEMA Map Service Center at msc.fema.gov and enter your property address to see the current FIRM panel and zone.
Do I need flood insurance in Rancho Cucamonga?
Federally-backed mortgages require it in Zones A and AE; outside SFHAs it is optional but often recommended near drainage corridors.
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