SECTION 4: RISK ASSESSMENT
Table 4.96 – Consequence Analysis - Landslide Category Consequences Public
Any impacts to the public are expected to be minor. Individuals may sustain injuries if they are in an affected structure or using affected infrastructure when the event occurs. Impacts to responders are unlikely. Personnel responsible for debris cleanup or roadway closures may face increased risk. Landslide is unlikely to affect continuity of operations in Wake County. Buildings and infrastructure may incur minor damages as a result of landslide; however, vulnerability in Wake County is low. Environmental impacts are expected to be minimal. Landslide may cause terrain and drainage changes and may temporarily increase sediment loads in nearby waterways.
Responders
Continuity of Operations (including Continued Delivery of Services) Property, Facilities and Infrastructure
Environment
Economic Condition of the Jurisdiction Public Confidence in the Jurisdiction’s Governance
Economic impacts are not expected.
Any landslide occurring in Wake County is unlikely to be severe and would not be expected to affect public confidence.
HAZARD SUMMARY BY JURISDICTION The following table summarizes landslide hazard risk by jurisdiction. Probability was determined to be slightly higher for jurisdictions in western Wake County where USGS mapping indicates there is moderate susceptibility and incidence. It should be noted that this probability rating reflects a low- consequence event and that the probability of a significant landslide is unlikely across the entire county. All other factors do not vary across jurisdictions.
Spatial Extent
Warning Time
Jurisdiction
Probability
Impact
Duration
Score
Priority
Wake County
2 2 2
1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1
3 3 3 3 3 3 3 3 3 3 3 3 3
1 1 1 1 1 1 1 1 1 1 1 1 1
1.5 1.5 1.5 1.2 1.2 1.5 1.2 1.5 1.5 1.2 1.2 1.2 1.2
L L L L L L L L L L L L L
Apex Cary
Fuquay-Varina
1 1
Garner
Holly Springs Knightdale
2
1
Morrisville
2 2
Raleigh
Rolesville
1 1 1 1
Wake Forest
Wendell Zebulon
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 186
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