SECTION 4: RISK ASSESSMENT
Elderly Population at Risk
Total Population at Risk
All Children Population
Children at Risk
Total Population
All Elderly Population
Jurisdiction
Number Percent
Number Percent
Number Percent
Holly Springs
25,790 25,790 18,501 18,501 18,655 18,655
100% 100% 100% 100%
2,192 1,572 1,585
2,192 1,572 1,585
100% 100% 100% 100%
1,875 1,345 1,356
1,875 1,345 1,356
100% 100% 100% 100%
Knightdale Morrisville
Rolesville
5,199
5,199
442
442
378
378
Wake Forest
30,382 31,175 102.60%
2,582
2,682 103.90%
2,209
2,261 102.40%
Wendell Zebulon
7,889 6,102
7,889 6,102
100% 100%
670 519
670 519
100% 100%
574 444
574 444
100% 100%
Unincorporated Wake County
135,124 135,124
100%
11,483 11,483
100%
9,825
9,825
100%
Total
900,683 903,811 100.35%
76,540
76,978 100.57%
65,488
65,697 100.32%
Source: NCEM Risk Management Tool
Property
In a severe earthquake event, buildings can be damaged by the shaking itself or by the ground beneath them settling to a different level than it was before the earthquake (subsidence). Buildings can even sink into the ground if soil liquefaction occurs. If a structure (a building, road, etc.) is built across a fault, the ground displacement during an earthquake could seriously damage that structure. Earthquakes can also cause damages to infrastructure, resulting in secondary hazards. Damages to dams or levees could cause failures and subsequent flooding. Fires can be started by broken gas lines and power lines. Fires can be a serious problem, especially if the water lines that feed the fire hydrants have been damaged as well. Wake County has not been impacted by an earthquake with more than a moderate intensity, so damage to the built environment is unlikely. Table 4.26 through Table 4.27 detail the estimated buildings impacted from varying magnitudes of earthquake events.
Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019
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