Chatham County Disaster Risk
Chatham County, Georgia
FEMA Risk Rating
Relatively High
National Percentile
97th
of 3,144 counties
State Rank
#1
of 159 (1 = highest risk)
Flood Risk
96th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 96% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Moderate
Higher than 92% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 77% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively High
Higher than 94% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively High
Higher than 99% of US counties
Risk Overview
About Natural Disaster Risk in Chatham County, Georgia
Chatham faces elevated disaster risk
Chatham County's composite risk score of 97.42 places it well above the national average, marking it as a relatively high-risk area. Hurricane risk dominates at 99.37, while flood risk reaches 96.00—both significantly outpacing typical U.S. county profiles. This coastal location amplifies exposure to multiple hazard types simultaneously.
Among Georgia's highest-risk counties
With a composite score of 97.42 versus Georgia's state average of 39.49, Chatham ranks among the state's most disaster-prone counties. The county's hurricane and flood risks are exceptional within Georgia, reflecting its Savannah-area coastal position and low-lying geography. Only a handful of Georgia counties face comparable multi-hazard exposure.
Significantly riskier than inland peers
Chatham's 97.42 score far exceeds neighboring inland counties like Clarke (66.95) and Chattooga (54.36), underscoring the coastal premium for hurricane and flood exposure. Even compared to other coastal-adjacent counties, Chatham's overall risk is notably elevated. This geographic distinction shapes insurance costs and preparedness priorities across the region.
Hurricanes and flooding dominate
Hurricane risk (99.37) and flood risk (96.00) are Chatham's primary hazards, with storm surge and rainfall flooding posing serious threats to homes and infrastructure. Tornado risk (77.45) adds a secondary concern, particularly during spring months. Residents should prioritize understanding evacuation routes and storm surge maps for their specific neighborhoods.
Comprehensive coverage is essential
Standard homeowners insurance does not cover flood or hurricane damage—Chatham residents need dedicated flood insurance (available through the National Flood Insurance Program) and confirmed hurricane coverage including wind and water damage. Given the county's 99.37 hurricane risk score, flood insurance is not optional for most properties. Review your policy annually and consider elevation or structural improvements to reduce long-term exposure.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Chatham County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Chatham County
Risk Verdict
FEMA's National Risk Index places Chatham County at the 97th percentile nationally — in the high-risk bracket for U.S. counties. Residents should prioritize a formal household emergency plan, including evacuation routes, insurance review, and a well-stocked emergency kit.
Hazard Breakdown
Hurricane risk is Chatham County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 96th percentile nationally. Additional tracked hazards include earthquake (94th percentile), wildfire (92th percentile), tornado (77th percentile).
Preparedness Context
Hurricane exposure at the 99th percentile nationally makes Chatham County a county where pre-season preparedness — not storm-day preparation — determines outcomes. Chatham County evacuation decisions under a watch or warning benefit from prior planning, not routes improvised under time pressure. Chatham County's flood exposure at the 96th percentile nationally adds a hazard layer that can persist or intensify after hurricane-force winds have passed, particularly in low-lying inland areas. Chatham County residents benefit from registering with the county's special-needs evacuation registry if household members have mobility limitations, require electricity-dependent medical equipment, or cannot self-evacuate — registration in advance of storm season is required.
Regional Context
Chatham County is 57.9 composite risk points above the Georgia average, indicating that residents face greater natural hazard exposure than most of their in-state neighbors.
Is your household prepared for Chatham County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Chatham County, GA?
What types of natural hazards affect Chatham County?
How does Chatham County risk compare to the Georgia average?
Is Chatham County at risk for hurricane?
How is natural disaster risk measured?
Why is Chatham County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.