HomeSoil seriesDewey
Dewey soil series
Dewey soils cover 709,045 mapped acres, mostly in Tennessee, Alabama and Kentucky. USDA rates shrink-swell a limit for houses without basements on 0% of that land, and a shallow water table a limit for basements on 0%.
It is the leading soil series by area in 7 of the counties and cities on this site, including Clinton County, KY; Washington County, TN; Loudon County, TN.
SSURGO survey versions to August 5, 2026 · series description revised 2001-04
of its land: shrink-swell limits houses without basements
of its land: a shallow water table limits basements
median highest linear extensibility (6% and up is high)
median highest clay content in the top 150 cm
USDA's description
The Dewey series consists of very deep, well drained, moderately permeable soils on uplands. These soils formed in residuum of limestone or in 1 to 2 feet of old alluvium and the underlying residuum from limestone. Slopes range from 2 to 40 percent.
Source: USDA NRCS series description (OSD) for Dewey, revised 2001-04. Read it.
Engineering properties
| Mapped area (SSURGO) | 709,045 acres |
| Shrink-swell limits houses without basements | 0.0% |
| Shallow water table limits basements | 0.0% |
| Very limited for septic absorption fields | 36.3% |
| Most common drainage class | Well drained |
| Most common hydrologic soil group | B |
| Taxonomic class | Fine, kaolinitic, thermic Typic Paleudults |
| Type location | McMinn County, Tennessee |
Where Dewey is mapped
| State | Mapped acres |
|---|---|
| Tennessee | 478,640 |
| Alabama | 144,740 |
| Kentucky | 64,247 |
| Georgia | 21,418 |
Places where Dewey leads
Counties and cities where Dewey covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Clinton County, KY | 34% |
| Washington County, TN | 27% |
| Loudon County, TN | 24% |
| Jefferson County, TN | 21% |
| Hamblen County, TN | 18% |
| Grainger County, TN | 13% |
| Knox County, TN | 12% |
Other places where Dewey is a main soil
Counties and cities where Dewey is among the six soil series covering the most mapped land, but not the first. Share of the place's mapped land.
Counties
Sources
Shares and properties: USDA NRCS SSURGO via Soil Data Access, weighted by each component's share of its map units. Description: the USDA NRCS series description. How we count.