Flood Zones: Los Angeles vs Pasadena
How do flood zones rules compare between Los Angeles, CA and Pasadena, CA?
Los Angeles and Pasadena have similar restriction levels.
Los Angeles, CA
Los Angeles County
The Specific Plan for Management of Flood Hazards (Ordinance 172,081) is the primary regulation governing development in LA flood zones. The Los Angeles Flood Hazard Map (LAFHM) designates floodways, floodplains, mud-prone areas, and coastal high-hazard zones. LAMC 19.07 establishes fees for flood hazard compliance checks by the Bureau of Engineering.
View full Los Angeles rules →Pasadena, CA
Los Angeles County
Pasadena has flood-prone areas along the Arroyo Seco and other waterways. The city participates in FEMA's NFIP. Construction in flood zones must meet FEMA elevation requirements and city floodplain management standards.
View full Pasadena rules →Key Facts Comparison
| Fact | Los Angeles | Pasadena |
|---|---|---|
| Primary Law | Ordinance 172,081 (Specific Plan) | - |
| Compliance Fee | $273 per check (LAMC 19.07) | - |
| Flood Map | LA Flood Hazard Map (LAFHM) | - |
| NFIP | City participates in federal flood insurance | Participating community |
| Zone Types | Floodway, floodplain, mud-prone, coastal | - |
| Freeboard | - | 1 foot above base flood elevation |
| Key Areas | - | Arroyo Seco, Eaton Wash |
| Hillside | - | Additional drainage requirements |
Highlighted rows indicate differences between cities.
Los Angeles FAQ
How do I check if my LA property is in a flood zone?
Check the Los Angeles Flood Hazard Map (LAFHM) through the Bureau of Engineering's website or request a flood hazard report. The Bureau charges $273 for a formal compliance check under LAMC 19.07. FEMA flood maps are also available through the NFIP.
Do I need special permits to build in an LA flood zone?
Yes. Development in any designated flood hazard area requires flood clearance from the Bureau of Engineering under Ordinance 172,081. You may need elevation certificates, floodproofing certificates, and compliance with both the city Specific Plan and NFIP requirements.
Pasadena FAQ
Is Pasadena in a flood zone?
Parts of Pasadena have FEMA flood zones along the Arroyo Seco and other waterways. Check FEMA flood maps for your property.
Can I build in a flood zone?
Yes, with proper permits. Construction must meet elevation requirements and the city's floodplain management standards.
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