Wake County Hazard Mitigation Plan - Adopted 10-21-2024

ANNEX A: WAKE COUNTY UNINCORPORATED AREAS

Table A.5 – HAZUS 100-Year Flood Results, Unincorporated Wake County

Total Buildings with Loss

Total Value (Building & Contents)

Estimated Building Damage

Estimated Content Loss

Estimated Total Damage

Occupancy Type

Loss Ratio

Agriculture Commercial Educational Government Industrial Religious Residential

35 25

$2,083,000 $1,802,000

$220,000 $260,000

$665,000 $590,000

$885,000 $850,000

42% 47%

0 0

$0 $0

$0 $0

$0 $0

$0 $0

0% 0%

36

$490,000 $520,000

$137,000 $25,000

$298,000 $174,000

$435,000 $199,000

89% 38% 86% 76%

3

235 334

$14,451,000 $19,346,000

$8,255,000 $8,897,000

$4,173,000 $5,900,000

$12,428,000 $14,797,000

Total

Source: FEMA Natural Hazards Risk Assessment Program

A.1.4 WILDFIRE Table A.6 summarizes the acreage in unincorporated Wake County that falls within the Wildland Urban Interface (WUI), categorized by housing density. The WUI is the area where housing development is built near or among areas of vegetation that may be prone to wildfire. Areas in the WUI are those where development may intermix with flammable vegetation. Over 23 percent of unincorporated Wake County is not included in the WUI. Table A.6 – Wildland Urban Interface Acreage, Unincorporated Wake County

Housing Density

Total Acreage Percent of Total Acreage

Not in WUI LT 1hs/40ac

76,096.0 30,706.3

23.3%

9.4% 7.9%

1hs/40ac to 1hs/20ac 1hs/20ac to 1hs/10ac 1hs/10ac to 1hs/5ac 1hs/5ac to 1hs/2ac 1hs/2ac to 3hs/1ac

25,734.7

34,746.0

10.6%

41,242.4

12.6%

57,766.1 59,521.4

17.7%

18.2%

GT 3hs/1ac

674.6

0.2%

Total

326,487.5

100%

Source: Southern Wildfire Risk Assessment

Table A.7 provides the count and estimated value of all structures that intersect with areas of unincorporated Wake County that are rated moderate to high on the WUI Risk Index.

Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan

WSP June 2024 Page 372

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