ANNEX G: TOWN OF HOLLY SPRINGS
G.1.4 WILDFIRE Table G.5 summarizes the acreage in the Town of Holly Springs 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 24 percent of the Town of Holly Springs is not included in the WUI. Table G.5 – Wildland Urban Interface Acreage, Town of Holly Springs
Housing Density
Total Acreage
Percent of Total Acreage
Not in WUI
2,997.71
24.0%
LT 1hs/40ac
1,403.53
11.2%
1hs/40ac to 1hs/20ac
908.95
7.3%
1hs/20ac to 1hs/10ac
725.86
5.8%
1hs/10ac to 1hs/5ac
699.77
5.6%
1hs/5ac to 1hs/2ac
1,026.31
8.2%
1hs/2ac to 3hs/1ac
3,968.37
31.8%
GT 3hs/1ac
752.06
6.0%
Total
12,482.55
100%
Source: Southern Wildfire Risk Assessment
Figure G.5 depicts the WUI for the Town of Holly Springs. Figure G.6 depicts the Fire Intensity Scale, which indicates the potential severity of fire based on fuel loads, topography, and other factors. Figure G.7 depicts Burn Probability based on landscape conditions, percentile weather, historical ignition patterns, and historical prevention and suppression efforts. Potential fire intensity is highest in northwest and west Holly Springs. These areas are largely outside of the WUI and have low burn probability. Southeast Holly Springs has a moderate burn probability, however potential fire intensity is relatively low in most of the area. Table G.6 provides the count and estimated value of all structures that intersect with areas of the Town of Holly Springs that are rated moderate to high on the WUI Risk Index. Table G.6 - Structures at Risk to Moderate-High WUI Risk Index, Town of Holly Springs
Occupancy
Structures at Risk
Structure Value
Estimated Content Value
Total Value
Agriculture
23
$6,875,103
$6,875,103
$13,750,206
Commercial
213
$1,058,529,220
$1,058,529,220
$2,117,058,440
Education
9
$99,813,515
$99,813,515
$199,627,030
Government
32
$168,711,598
$168,711,598
$337,423,196
Industrial
30
$22,946,785
$34,420,178
$57,366,963
Religious
21
$22,009,307
$22,009,307
$44,018,614
Residential
10521
$4,335,904,980
$2,167,952,490 $6,503,857,470
Total
10,849
$5,714,790,508
$3,558,311,411
$9,273,101,919
Source: Southern Wildfire Risk Assessment
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 465
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