Do You Want To Risk It?

Table 1: Numeric Scales Used to Describe Risk from Storm-Related Hazards

Flood Risk

8.5 = High (areas in the “Velocity” zone)
6.8 = Moderately-High (areas in the 100-year floodplain)
5.1 = Moderate (areas in the 500-year floodplain)
3.4 = Moderately-Low (flood-prone soils outside above areas)
1.7 = Low (other areas)

Wind Risk

8 (areas likely to experience winds of 120 mph or higher)
6.4 (areas likely to experience winds of 110 – 119 mph)
4.8 (areas likely to experience winds of 100 – 109 mph)

Surge Risk

4 (Storm surge category 1 and 2)
3 (Storm surge category 3)
2 (Storm surge category 4 and 5)
1 (Storm surge buffer (0.25 mile from entire surge coverage)
0 (outside surge area)

Erosion Risk

3.3 (Seaward of the CCCL*)
2.2 (CCCL to 30-year average erosion line)
1.1 (30-year average to 50-year average erosion line)
0 (other areas)
99 = No data available

Composite Risk

High = Combined flood, wind, surge, and erosion values of 19.7 - 23.8
Moderately-high = Combined flood, wind, surge, and erosion values of 16.3 - 19.7
Moderate = Combined flood, wind, surge, and erosion values of 14.3 - 16.3
Moderately-low = Combined flood, wind, surge, and erosion values of 11.0 - 14.3
Low = Combined flood, wind, surge, and erosion values of 4.8 - 11.0

* - The Coastal Construction Control Line (CCCL) defines the zone along the coastline that is susceptible to flooding, erosion, and other impacts during a 100-year storm. Properties located seaward of the CCCL are subject to State-enforced elevation and construction requirements.