Flood Zones: Oxnard vs Simi Valley
How do flood zones rules compare between Oxnard, CA and Simi Valley, CA?
Simi Valley has fewer restrictions than Oxnard.
Oxnard, CA
Ventura County
Parts of Oxnard lie within FEMA-designated flood zones due to proximity to the Santa Clara River, coastal areas, and the Oxnard Plain agricultural drainage. Flood insurance is required for properties in Special Flood Hazard Areas.
View full Oxnard rules →Simi Valley, CA
Ventura County
Portions of Simi Valley fall within FEMA-designated flood zones, primarily along the Arroyo Simi and its tributaries. Properties in Special Flood Hazard Areas must meet floodplain development standards and carry flood insurance if federally financed.
View full Simi Valley rules →Key Facts Comparison
| Fact | Oxnard | Simi Valley |
|---|---|---|
| NFIP Participant | Yes | - |
| Flood Zones | A and V zones present | Along Arroyo Simi and tributaries |
| Insurance Required | In Special Flood Hazard Areas with federal mortgage | - |
| CRS Participant | Yes, may reduce premiums | - |
| Key Areas | Santa Clara River, coastal, Oxnard Plain | - |
| Elevation Requirement | - | 1 foot above BFE |
| Substantial Improvement | - | 50% threshold triggers compliance |
| Insurance | - | Required in SFHA with federal mortgage |
Highlighted rows indicate differences between cities.
Oxnard FAQ
Is my Oxnard property in a flood zone?
Parts of Oxnard are in FEMA flood zones, particularly near the Santa Clara River, coastal areas, and low-lying agricultural areas. Check FEMA's Flood Map Service Center or contact Oxnard Building and Engineering to determine your property's flood zone designation.
Do I need flood insurance in Oxnard?
Flood insurance is required for properties in Special Flood Hazard Areas with federally backed mortgages. Oxnard's CRS participation may qualify you for premium discounts.
Simi Valley FAQ
Is my property in a Simi Valley flood zone?
Check FEMA Flood Map Service Center or contact Community Development at (805) 583-6800. Flood zones are primarily along the Arroyo Simi channel and tributaries.
Do I need flood insurance in Simi Valley?
Flood insurance is required for properties with federally-backed mortgages in Special Flood Hazard Areas. It is strongly recommended for all properties even outside designated zones.
Can I build in a flood zone?
Yes, with proper permits and compliance with floodplain regulations. New construction must elevate the lowest floor at least one foot above Base Flood Elevation.
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