Flood Zones: Downey vs Santa Clarita
How do flood zones rules compare between Downey, CA and Santa Clarita, CA?
Downey has fewer restrictions than Santa Clarita.
Downey, CA
Los Angeles County
Portions of Downey fall within FEMA-designated flood zones, primarily along the Los Angeles River and Rio Hondo channels. The city participates in the National Flood Insurance Program and enforces floodplain development standards.
View full Downey rules →Santa Clarita, CA
Los Angeles County
Santa Clarita has significant FEMA-mapped flood zones, particularly along the Santa Clara River and its tributaries. Development in flood hazard areas is heavily restricted under SCMC Title 15. Buildings, fences, and fill are prohibited in flood zones except as specifically authorized.
View full Santa Clarita rules →Key Facts Comparison
| Fact | Downey | Santa Clarita |
|---|---|---|
| NFIP Participant | Yes | - |
| Flood Areas | LA River, Rio Hondo corridors | Santa Clara River and tributaries |
| Building Code | CA Building Code floodplain provisions | - |
| Flood Maps | FEMA Flood Map Service Center | - |
| Public Works | (562) 904-7110 | - |
| Code Section | - | SCMC Title 15 |
| NFIP | - | Participating community |
| Restrictions | - | Buildings, fences, fill all restricted |
| ADUs | - | Must comply with flood zone rules |
Highlighted rows indicate differences between cities.
Downey FAQ
Is my Downey property in a flood zone?
Check FEMA's Flood Map Service Center at msc.fema.gov for your property's flood zone designation. Properties near the LA River or Rio Hondo may be in Special Flood Hazard Areas.
Do I need flood insurance in Downey?
Properties in FEMA-designated Special Flood Hazard Areas with federally backed mortgages are required to carry flood insurance.
Santa Clarita FAQ
Is my Santa Clarita property in a flood zone?
Check FEMA's Flood Map Service Center or contact Santa Clarita's planning department. Properties near the Santa Clara River and tributary washes are most likely in flood hazard areas.
Can I build a fence in a Santa Clarita flood zone?
Fences in flood hazard areas require permits and must comply with SCMC Title 15 floodplain regulations. Standard fence permit exemptions do not apply in flood zones.
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