Key facts: Atlanta
- Atlanta's hills hide a lot of water: in September 2009 days of rain sent creeks through homes across the metro, and a December 2022 freeze burst pipes in many buildings.[1][2]
- Red clay drains slowly, so water sits against foundations.
- Many homes have basements or crawl spaces, and these are often the first to get wet.
Basements on clay
Red clay drains slowly, so water sits against foundations. Many homes have basements or crawl spaces, and these are often the first to get wet.
Peachtree Creek and old sewers
Older intown areas have aging sewers and creeks in tight valleys. Heavy rain can cause backups, so note any smell at floor drains.
Flood claims recorded in Fulton County
Atlanta sits in Fulton County. FEMA publishes every National Flood Insurance Program claim with personal details removed, which gives a plain record of where water has reached insured buildings here.
| Measure | Count |
|---|---|
| Flood insurance claims on record | 3,100 |
| Year with the most claims | 2009 (672) |
| Largest named event | Late Summer Storms (622) |
| Claims outside high-risk A and V zones | 42% |
| Claims on buildings built before 1975 | 73% |
County-wide counts of insured claims only. Uninsured losses, burst pipes and appliance leaks are not in this data.
What the Atlanta claim record shows
For Atlanta homes, the local precedents are the events behind the most Fulton County claims: Late Summer Storms (622 claims), Tropical Storm Ivan (322 claims) and Hurricane Helene (253 claims).
About 42% of claims with a recorded zone came from outside the high-risk A and V zones, so a moderate-risk label does not mean a Atlanta home stays dry.
If your Atlanta home is older, note that buildings from before 1975 make up 73% of county claims with a known build date. Many predate current flood maps, so inspect low outlets, ductwork and subfloors closely after any water event.
Federal disaster history for Fulton County
FEMA lists 22 federal declarations covering Fulton County. The most common types are hurricane (6), severe storm (5) and tropical storm (2). The latest are Hurricane Isaias in 2026, Severe Winter Storm in 2000 and Hurricane Helene in 2024. If your loss falls inside an open declaration, Atlanta homeowners can check DisasterAssistance.gov as well as their insurance policy.
Atlanta weather and your home
Weather records for Atlanta from 2015 through 2024 average 61 inches of precipitation a year, and July and August are the wettest months. The area averages 14.5 days a year with an inch or more.
Frost reaches Atlanta on about 33 nights a year, but hard freezes are less common, which can leave pipes in attics and outer walls poorly protected in a cold snap.
When rain falls in Atlanta
Seasonal averages for Atlanta, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 16.0 in | 26% |
| April to June | 14.1 in | 23% |
| July to September | 18.0 in | 30% |
| October to December | 12.8 in | 21% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
Atlanta home checklist from these records
- Don't rely on recent quiet years. Only 23% of Fulton County claims date from 2015 or later, so older floods still show what can happen.
- Test any sump pump before July, since Atlanta averages 15 days a year with an inch or more.
- Keep dated photos of each room. After Late Summer Storms, 622 insured Fulton County owners filed claims at about the same time.
What to tell the Atlanta contractor
- Whether you have a basement or crawl space
- Your nearest creek
- Whether water came from a drain
Services Atlanta callers ask about
Questions
Atlanta water damage questions
Do you cover Marietta?
Yes, along with Alpharetta, Decatur and Lawrenceville.
Why does my crawl space stay wet?
Clay holds water, and grading often needs attention.