Raleigh, North Carolina · FEMA Region 4

Is Raleigh in a Flood Zone?

Moderate Flood Risk

Raleigh has moderate flood risk from the Neuse River, Crabtree Creek, Walnut Creek, and urban stormwater flooding. Hurricanes and tropical storms that track inland through North Carolina drive Raleigh's worst flooding events. Hurricane Matthew (2016) and Hurricane Florence (2018) both caused significant flooding in the Triangle region. Crabtree Creek, which runs through central Raleigh including the Crabtree Valley Mall area, is the city's most flood-prone corridor.

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FEMA Flood Zones in Raleigh

AE

100-Year Floodplain (Detailed)

BFE established along the Neuse River, Crabtree Creek, Walnut Creek, Rocky Branch, and Marsh Creek. Flood insurance required for federally backed mortgages.

A

100-Year Floodplain (Approximate)

No detailed BFE study. Found along smaller tributaries in developing areas of Wake County.

X (shaded)

500-Year Floodplain

Moderate risk. Extended areas along Crabtree Creek and the Neuse River. Tropical storm rainfall can affect these areas.

X (unshaded)

Minimal Risk

Most of Raleigh. However, intense tropical moisture events can cause flooding outside mapped zones.

Flood Insurance Costs in Raleigh

  • Zone AE (Neuse River): $1,200–$3,500/year
  • Zone AE (Crabtree Creek): $1,000–$3,000/year
  • Zone X (shaded): $400–$900/year if purchased voluntarily
  • Zone X (unshaded): $300–$600/year (Preferred Risk Policy)
  • Risk Rating 2.0 factoring in tropical storm/hurricane rainfall risk
  • NC Floodplain Mapping Program provides state-of-the-art flood data

Building Requirements in Flood Zones

  • AE zones: lowest floor at or above BFE; Raleigh requires 2-ft freeboard above BFE
  • Neuse River buffer: 50-ft vegetated buffer required by state nutrient management rules
  • Stream buffer: 50-ft buffer along all perennial and intermittent streams in Raleigh
  • Substantial improvement (>50% of value) triggers full floodplain compliance
  • Stormwater management: on-site detention/retention for new development
  • NC Floodplain Mapping: state maps may show larger floodplains than FEMA FIRMs

How to Check Flood Risk in Raleigh

  1. 1

    Check your flood zone

    Enter your Raleigh address into ReadyPermit or FEMA's Flood Map Service Center. The NC Floodplain Mapping Program (NCFloodMaps.com) provides state-produced flood risk data that may be more current than FEMA maps.

  2. 2

    Check stream buffer requirements

    Raleigh requires 50-ft stream buffers along all perennial streams. The Neuse River basin has additional state-mandated nutrient buffers. These reduce buildable area near waterways.

  3. 3

    Get an Elevation Certificate

    Required for insurance in A/AE zones. Hire a North Carolina-licensed surveyor ($350–$550).

  4. 4

    Obtain flood insurance

    Required for A/AE zones with federally backed mortgages. Recommended for properties near Crabtree Creek, which has a history of flooding during tropical storms.

  5. 5

    Review building requirements

    Raleigh requires 2-ft freeboard above BFE, exceeding FEMA minimums. Check with Raleigh Stormwater Management for all floodplain and buffer requirements.

  6. 6

    Assess tropical storm risk

    Raleigh is vulnerable to flooding from hurricanes and tropical storms that track inland. Properties near creeks should factor in the potential for extreme rainfall events.

  7. 7

    Monitor creek levels

    Wake County and the City of Raleigh maintain stream gauge networks. Monitor levels during storms through the Raleigh Stormwater Management website.

Frequently Asked Questions — Raleigh Flood Zones

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