Wake County Hazard Mitigation Plan - Adopted 10-21-2024

SECTION 4: RISK ASSESSMENT

Table 4.80 – Repetitive Loss Properties by Jurisdiction

Total Number of RL Properties

Total Number of SRL Properties

Total Number of Losses

Jurisdiction

Raleigh

124

26

390

Apex Cary

0

0

0

22

1

60

Fuquay-Varina

1

0 0 0 0 0 0 0

3

Garner

5 0

11 0

Holly Springs Knightdale

1

3

Morrisville Rolesville

0 0 0

0 0 0

Wake Forest

Wendell Zebulon

1

1

2

0 6

0

0

Unincorporated Wake County

2

25

Total

160

30

494

Source: FEMA Open Source Data, February 2024 Note: As of September 2024, City of Raleigh staff indicated that several properties were removed from their repetitive loss list and the City ’ s repetitive loss property count is now 115.

ENVIRONMENT During a flood event, chemicals and other hazardous substances may end up contaminating local water bodies. Flooding kills animals and in general disrupts the ecosystem. Snakes and insects may also make their way to the flooded areas. Floods can also cause significant erosion, which can alter streambanks and deposit sediment, changing the flow of streams and rivers and potentially reducing the drainage capacity of those waterbodies.

CONSEQUENCE ANALYSIS

Table 4.81 summarizes the potential detrimental consequences of flood. Table 4.81 – Consequence Analysis - Flood Category Consequences Public

Localized impact expected to be severe for incident areas and moderate to light for other adversely affected areas. First responders are at risk when attempting to rescue people from their homes. They are subject to the same health hazards as the public. Flood waters may prevent access to areas in need of response or the flood may prevent access to the critical facilities themselves which may prolong response time. Damage to personnel will generally be localized to those in the flood areas at the time of the incident and is expected to be limited. Floods can severely disrupt normal operations, especially when there is a loss of power. Damage to facilities in the affected area may require temporary relocation of some operations. Localized disruption of roads, facilities, and/or utilities caused by incident may postpone delivery of some services.

Responders

Continuity of Operations (including Continued Delivery of Services)

Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan

WSP June 2024 Page 156

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