SECTION 4: RISK ASSESSMENT
influence on earthquake occurrences. However, currently no studies quantify the relationship to a high level of detail, so recent earthquakes should not be linked with climate change. While not conclusive, early research suggest that more intense earthquakes and tsunamis may eventually be added to the adverse consequences that are caused by climate change. VULNERABILITY ASSESSMENT
METHODOLOGIES AND ASSUMPTIONS
Population and property at risk to flooding was estimated using data from the NCEM IRISK database, which was compiled in NCEM’s Risk Management Tool.
PEOPLE Earthquake events in Wake County are unlikely to produce more than mild ground shaking; therefore, injury or death is unlikely. Objects falling from shelves generally pose the greatest threat to safety. Table 4.28 and Table 4.29 detail the population estimated to be at risk from a 250-year earthquake and a 500-year earthquake, respectively, according to the NCEM IRISK database. Table 4.28 – Estimated Population Impacted by 250-Year Earthquake
Elderly Population At Risk
All Children Population
Children At Risk
Population At Risk
All Elderly Population
Total Population
Jurisdiction
Number Percent
Number Percent
Number Percent
Raleigh
476,892 48,639
10%
53,945
6,246
12%
26,904
3,115
12%
Apex
57,525
4,320
8%
5,963
617
10%
3,912
405
10%
Cary
164,869
12,025
7%
19,866
1,737
9%
9,432
825
9%
Fuquay-Varina
32,177
2,972
9%
4,432
526
12%
2,204
262
12%
Garner
35,232
4,534
13%
5,015
734
15%
2,863
419
15%
Holly Springs
30,885
2,402
8%
2,685
250
9%
2,254
210
9%
Knightdale
29,077
3,307
11%
3,207
573
18%
1,917
343
18%
Morrisville
21,999
4,676
21%
1,533
384
25%
1,627
408
25%
Rolesville
12,236
834
7%
1,401
225
16%
919
147
16%
Wake Forest
38,203
3,726
10%
4,777
571
12%
2,891
346
12%
Wendell
8,423
835
10%
1,361
144
11%
418
44
11%
Zebulon
5,751
748
13%
948
116
12%
437
54
12%
Unincorporated Wake County
230,494
22,616
10%
29,196
4,887
17%
14,301
2,394
17%
TOTAL
1,143,763
111,634
10%
134,329
17,010
13%
70,079
8,972
13%
Source: NCEM Risk Management Tool
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 113
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