Flood Zones: El Cerrito vs Walnut Creek
How do flood zones rules compare between El Cerrito, CA and Walnut Creek, CA?
El Cerrito and Walnut Creek have similar restriction levels.
El Cerrito, CA
Contra Costa County
Unincorporated Contra Costa County regulates floodplain development under Ordinance Code Chapter 914-14 to maintain FEMA National Flood Insurance Program (NFIP) participation. Significant AE flood zones affect Bethel Island, Bay Point, Rodeo, and delta shoreline areas.
View full El Cerrito rules →Walnut Creek, CA
Contra Costa County
Walnut Creek has significant FEMA Special Flood Hazard Areas along Walnut Creek (the watercourse), Las Trampas Creek, San Ramon Creek, and Pine Creek. Much of the Pine Creek corridor is mapped as Zone AE requiring flood insurance and elevated construction standards.
View full Walnut Creek rules →Key Facts Comparison
| Fact | El Cerrito | Walnut Creek |
|---|---|---|
| Governing ordinance | CCC Ord. Chapter 914-14 | - |
| NFIP participation | Active — required for flood insurance | - |
| Key flood areas | Bethel Island, Bay Point, Rodeo, delta shoreline | - |
| Substantial improvement | ≥50% pre-improvement market value | - |
| Required elevation | Lowest floor at/above BFE | - |
| - | - |
Highlighted rows indicate differences between cities.
El Cerrito FAQ
Is my property in a FEMA flood zone?
Check the FEMA Flood Map Service Center (msc.fema.gov) or the CCC online zoning/GIS viewer. Significant zones exist at Bethel Island, Bay Point, and along creeks. If in Zone AE/A/VE, elevation and flood insurance apply.
Do I need flood insurance?
If your property is in a Special Flood Hazard Area and you have a federally backed mortgage, flood insurance is required. Even outside SFHAs, coverage is recommended — roughly 25 percent of NFIP claims come from outside mapped zones.
Walnut Creek FAQ
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