Oglethorpe County, Georgia
USDA's soil survey flags shrink-swell clay on 6% of Oglethorpe County's mapped land and a shallow water table under basements on 10%, both below the national shares of 15% and 29%. 100% of the county is in drought on the October 13, 2026 Drought Monitor map.
FEMA's flood data list no flood losses here since 2016. 37% of homes were built before 1980, against 50% nationally; the median home dates from 1990.
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 Oglethorpe County
| Expansive clay (limits slab homes) | 5.6% |
| High water table (limits basements) | 9.8% |
| Septic fields very limited | 45.0% |
| Clay swell (LEP, by area) | 2.2% |
| High-swell land (LEP 6%+) | 5.6% |
| Mapped soil | 282,700 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Cecil | 29% | 0% |
| Pacolet | 18% | 0% |
| Madison | 12% | 0% |
| Georgeville | 8% | 0% |
| Appling | 7% | 0% |
| Enon | 5% | n/a |
How we count · survey areas GA221 (2025-09-02)
What the numbers mean here
Rain over the 12 months to August 2026: 37.85 in, 10.35 in below the 1991-2020 average year of 48.20 in.
With shrink-swell clay on 6% and a shallow water table on 10% of the land, the soil survey points to neither problem across most of Oglethorpe County; conditions still vary lot by lot.
Drought
100% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 43 of the last 52 weeks; the most was 100% of its area, in 31 weeks, most recently on the October 13, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 100% |
| D1 moderate drought or worse | 100% |
| D2 severe or worse | 57.9% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
FEMA's flood data list no flood losses in Oglethorpe County since 2016.
Rain
| Average year, 1991-2020 | 48.20 in |
| 12 months to August 2026 | 37.85 in (-10.35) |
| 2025 | 49.60 in (+1.40) |
| Wettest year since 1895 | 1929: 79.13 in |
| Driest year since 1895 | 1954: 29.18 in |
| Days with 1 inch or more, normal at LEXINGTON (3 mi away) | 15.2 |
Homes
| Housing units | 6,511 |
| Median year built | 1990 |
| Built before 1980 | 37% |
| Built 2000 or later | 32% |
| Owner-occupied | 84% |
| Median value, owner-occupied | $231,600 |
| Single-family detached | 72% |
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 |
|---|---|---|---|
| Clarke County, GA | 18 mi | 0% | 8% |
| Wilkes County, GA | 19 mi | 6% | 10% |
| Madison County, GA | 20 mi | under 1% | 8% |
| Greene County, GA | 21 mi | 7% | 28% |
| Oconee County, GA | 21 mi | 0% | 8% |
| Elbert County, GA | 22 mi | 12% | 19% |
| Taliaferro County, GA | 24 mi | 18% | 55% |
| Morgan County, GA | 31 mi | under 1% | 14% |
Sources: USDA SSURGO (September 2, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status