Flood Zones: Dallas vs Irving
How do flood zones rules compare between Dallas, TX and Irving, TX?
Dallas and Irving have similar restriction levels.
Dallas, TX
Dallas County
Dallas Development Code Chapter 51A, Article V (Floodplain and Escarpment Zone Regulations) regulates development in the 1% annual chance (100-year) floodplain. All residential and commercial development in the regulatory floodplain is reviewed by the city before permits are issued. Property owners may need fill permits and floodplain alteration permits before construction. The ordinance meets or exceeds FEMA NFIP minimum criteria under 44 CFR Part 60.3(d). Dallas participates in the Community Rating System for flood insurance discounts.
View full Dallas rules →Irving, TX
Dallas County
Irving regulates floodplain development under the Land Development Code and participates in the National Flood Insurance Program (NFIP). The city enforces FEMA flood zone designations along the Elm Fork of the Trinity River, Cottonwood Creek, and other drainage corridors. Construction in Special Flood Hazard Areas requires a floodplain development permit, and residential structures must be elevated at least one foot above the base flood elevation.
View full Irving rules →Key Facts Comparison
| Fact | Dallas | Irving |
|---|---|---|
| Code Section | Ch. 51A, Art. V (Floodplain Regulations) | - |
| Standard | 1% annual chance (100-year) floodplain | - |
| FEMA Compliance | Meets 44 CFR Part 60.3(d) | - |
| Permits | Fill permit and floodplain alteration permit may be required | - |
| NFIP | Participates in Community Rating System | - |
| NFIP Status | - | Active participant |
| Major Flood Areas | - | Elm Fork Trinity River, Cottonwood Creek |
| Elevation Req | - | 1 ft above base flood elevation for residential |
| Permit Required | - | Floodplain development permit for SFHA |
| CRS Rating | - | Community Rating System participant |
Highlighted rows indicate differences between cities.
Dallas FAQ
Can I build in a Dallas floodplain?
Development in the regulatory floodplain requires city review and may need fill permits and floodplain alteration permits under Article V. All construction must meet or exceed FEMA NFIP criteria.
How do I check if my property is in a flood zone?
Contact Dallas Water Utilities Stormwater Operations or check FEMA flood maps. The city reviews all development in the 1% annual chance floodplain before issuing permits.
Irving FAQ
Is my Irving property in a flood zone?
Check FEMA's Flood Map Service Center or contact Irving's Development Services. Properties near the Elm Fork of the Trinity River, Cottonwood Creek, and major drainage channels are most likely in Special Flood Hazard Areas.
Can I build in a flood zone in Irving?
Yes, with a floodplain development permit. Residential structures must be elevated at least one foot above the base flood elevation. Commercial structures may use floodproofing as an alternative to elevation.
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