ANNEX I: TOWN OF MORRISVILLE
I.1.4 WILDFIRE Table I.5 summarizes the acreage in the Town of Morrisville 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 14 percent of the Town of Morrisville is not included in the WUI. Table I.5 – Wildland Urban Interface Acreage, Town of Morrisville
Housing Density
Total Acreage
Percent of Total Acreage
Not in WUI
868.22
14.9%
LT 1hs/40ac
551.64
9.4%
1hs/40ac to 1hs/20ac
330.18
5.7%
1hs/20ac to 1hs/10ac
219.60
3.8%
1hs/10ac to 1hs/5ac
400.32
6.9%
1hs/5ac to 1hs/2ac
619.66
10.6%
1hs/2ac to 3hs/1ac
2,032.18
34.8%
GT 3hs/1ac
800.64
13.7%
Total
5,822.46
100%
Source: Southern Wildfire Risk Assessment
Figure I.5 depicts the WUI for the Town of Morrisville. Figure I.6 depicts the Fire Intensity Scale, which indicates the potential severity of fire based on fuel loads, topography, and other factors. Figure I.7 depicts Burn Probability based on landscape conditions, percentile weather, historical ignition patterns, and historical prevention and suppression efforts. North and east Morrisville have the highest potential fire intensity in two concentrated pockets. These pockets, however, are largely outside of the WUI. The town has a relatively low burn probability, as well. Table I.6 provides the count and estimated value of all structures that intersect with areas of the Town of Morrisville that are rated moderate to high on the WUI Risk Index. Table I.6 - Structures at Risk to Moderate-High WUI Risk Index, Town of Morrisville
Occupancy
Structures at Risk
Structure Value
Estimated Content Value
Total Value
Agriculture
2
$255,215
$255,215
$510,430
Commercial
156
$549,567,079
$549,567,079
$1,099,134,158
Education
12
$105,342,887
$105,342,887
$210,685,774
Government
25
$21,052,725
$21,052,725
$42,105,450
Industrial
56
$105,410,497
$158,115,746
$263,526,243
Religious
19
$21,399,613
$21,399,613
$42,799,226
Residential
6501
$3,603,185,791
$1,801,592,896
$5,404,778,687
Total
6,771
$4,406,213,807
$2,657,326,160
$7,063,539,967
Source: Southern Wildfire Risk Assessment
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 496
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