Flood Zones: Santa Monica vs South San Gabriel
How do flood zones rules compare between Santa Monica, CA and South San Gabriel, CA?
Santa Monica has fewer restrictions than South San Gabriel.
Santa Monica, CA
Los Angeles County
Santa Monica participates in the National Flood Insurance Program and has adopted floodplain management regulations for coastal areas designated as FEMA Zone A. The Director of Public Works serves as floodplain administrator. Sea level rise poses an increasing coastal flood risk to the City.
View full Santa Monica rules →South San Gabriel, CA
Los Angeles County
LA County Code Title 11, Chapter 11.60 establishes floodway regulations for unincorporated areas. Development within FEMA flood zones requires compliance with NFIP standards. The County Flood Zone Determination website maps all flood hazard areas.
View full South San Gabriel rules →Key Facts Comparison
| Fact | Santa Monica | South San Gabriel |
|---|---|---|
| Coastal Zone | FEMA Zone A | - |
| Most of City | Zone X (minimal risk) | - |
| Administrator | Director of Public Works | - |
| Flood Maps | msc.fema.gov | - |
| Code | - | Title 11, Ch. 11.60 |
| Elevation Req. | - | 1 ft above BFE |
| NFIP Participant | - | Yes |
| Flood Lookup | - | pw.lacounty.gov/floodzone |
| Insurance | - | Required in SFHA |
Highlighted rows indicate differences between cities.
Santa Monica FAQ
Is Santa Monica in a flood zone?
Coastal areas along the shoreline carry FEMA Zone A designations. Most of the City is Zone X (minimal flood risk). Check msc.fema.gov or the City's GIS flood hazard zone viewer for your specific property.
Is sea level rise a concern in Santa Monica?
Yes. Studies project increasing coastal flooding from climate-driven sea level rise. The City's General Plan includes adaptation strategies, and the floodplain ordinance applies special standards to coastal construction.
South San Gabriel FAQ
How do I check if my property is in a flood zone in LA County?
Use the LA County Public Works Flood Zone Determination website at pw.lacounty.gov/floodzone. Enter your address to see FEMA flood zones and county floodway maps.
Do I need flood insurance in unincorporated LA County?
If your property is in a FEMA Special Flood Hazard Area (Zone A, AE, etc.), flood insurance is required for federally backed mortgages. LA County's CRS participation may provide premium discounts.
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