SECTION 4: RISK ASSESSMENT
The NFIP utilizes the 100-year flood as a basis for floodplain management. The Flood Insurance Study (FIS) defines the probability of flooding as flood events of a magnitude which are expected to be equaled or exceeded once on the average during any 100-year period (recurrence intervals). Or considered another way, properties within a 100-year flood zone have a one percent probability of being equaled or exceeded during any given year. Mortgage lenders require that owners of properties with federally-backed mortgages located within SFHAs purchase and maintain flood insurance policies on their properties. Consequently, newer and recently purchased properties in the community are typically insured against flooding.
Impact: 3 – Critical
Spatial Extent: 2 – Small HISTORICAL OCCURRENCES
Table 4.39 details the historical occurrences of flooding identified from 1996 through 2023 by NCEI Storm Events database. It should be noted that only those historical occurrences listed in the NCEI database are shown here and that other, unrecorded or unreported events may have occurred within the planning area during this timeframe. Table 4.39 – NCEI Records of Flooding, 1996-2023
Reported Property Damage
Reported Crop Damage
Location
Date
Type
Deaths
Injuries
RALEIGH RALEIGH RALEIGH RALEIGH RALEIGH RALEIGH
9/6/1996 9/10/1996 9/10/1996 9/11/1996 10/8/1996 4/28/1997 7/24/1997 1/16/1998 1/23/1998 3/9/1998 3/19/1998 8/8/1998 8/16/1998 8/26/1999 9/5/1999 9/15/1999 9/27/1999 9/28/1999
Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
$0 $0 $0 $0 $0 $0 $0
$0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
COUNTY WIDE
RALEIGH RALEIGH RALEIGH RALEIGH RALEIGH RALEIGH
$50,000
Flood
$0 $0 $0
Flash Flood Flash Flood
Flood Flood
$20,000 $40,000
WAKE FOREST COUNTY WIDE COUNTY WIDE COUNTY WIDE COUNTY WIDE
Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood
$0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
RALEIGH RALEIGH RALEIGH
7/29/2000 Flash Flood
8/1/2000 8/4/2000 8/4/2000 9/3/2000 9/4/2000
Flash Flood Flash Flood Flash Flood Flash Flood Flash Flood
FUQUAY SPGS
RALEIGH RALEIGH RALEIGH
9/25/2000 Flash Flood
COUNTYWIDE
6/16/2001
Flash Flood
SOUTH PORTION SOUTH PORTION
7/4/2001
Flash Flood
0
0
$0
$0
7/9/2001
Flash Flood
0
0
$0
$0
HOLLY SPGS WAKE FOREST
8/11/2001 9/10/2001
Flash Flood Flash Flood
0 0
0 0
$0 $0
$0 $0
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 131
Made with FlippingBook interactive PDF creator