Decatur County, Georgia
A shallow water table limits basements on 37% of Decatur County's mapped land, a higher share than 55% of US counties. Shrink-swell clay limits houses without basements on under 1%.
None of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 8 flood losses here since 2016. 41% of homes were built before 1980, against 50% nationally; the median home dates from 1986.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under Decatur County
| Expansive clay (limits slab homes) | 0.2% |
| High water table (limits basements) | 36.9% |
| Septic fields very limited | 47.6% |
| Clay swell (LEP, by area) | 1.4% |
| High-swell land (LEP 6%+) | 0.2% |
| Urban land, not rated | 1.2% |
| Mapped soil | 399,100 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Blanton | 18% | n/a |
| Bonneau | 12% | n/a |
| Orangeburg | 7% | 0% |
| Lucy | 7% | n/a |
| Tifton | 5% | 29% |
| Nankin | 5% | n/a |
How we count · survey areas GA087 (2025-08-27)
What the numbers mean here
On 37% of Decatur County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
Rain over the 12 months to August 2026: 35.93 in, 16.58 in below the 1991-2020 average year of 52.51 in.
Drought
0% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 41 of the last 52 weeks; the most was 100% of its area, in 35 weeks, most recently on the June 16, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 19.3% |
| D1 moderate drought or worse | 0% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
8 flood losses since 2016, $63,109 paid. The worst year was 2021, with 2.
| Year | Flood losses |
|---|---|
| 2016 | 2 |
| 2017 | 0 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 52.51 in |
| 12 months to August 2026 | 35.93 in (-16.58) |
| 2025 | 38.55 in (-13.96) |
| Wettest year since 1895 | 1964: 82.03 in |
| Driest year since 1895 | 1954: 30.37 in |
| Days with 1 inch or more, normal at CAIRO 1SW (22 mi away) | 16.6 |
Homes
| Housing units | 13,215 |
| Median year built | 1986 |
| Built before 1980 | 41% |
| Built 2000 or later | 25% |
| Owner-occupied | 62% |
| Median value, owner-occupied | $158,800 |
| Single-family detached | 66% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Seminole County, GA | 17 mi | under 1% | 51% |
| Grady County, GA | 20 mi | 0% | 46% |
| Gadsden County, FL | 21 mi | under 1% | 43% |
| Miller County, GA | 21 mi | 3% | 64% |
| Baker County, GA | 31 mi | 2% | 33% |
| Mitchell County, GA | 33 mi | 2% | 35% |
| Leon County, FL | 34 mi | 1% | 41% |
| Early County, GA | 36 mi | 3% | 36% |
Sources: USDA SSURGO (August 27, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status