HomeSoil seriesStephenville
Stephenville soil series
Stephenville soils cover 979,159 mapped acres, mostly in Oklahoma, Kansas and Texas. 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 10 of the counties and cities on this site, including Seminole County, OK; Stephens County, OK; Lincoln County, OK.
SSURGO survey versions to August 5, 2026 · series description revised 2014-02
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 Stephenville series consists of moderately deep, well drained, soils formed in material weathered from sandstone of Permian age. These soils are on very gently sloping to moderately steep side slopes of hills in the North Cross Timbers (MLRA 84A). Slopes range from 1 to 25 percent. Mean annual precipitation is about 810 mm (32 inches). Mean annual air temperature is about 16 degrees C (61 degrees F).
Source: USDA NRCS series description (OSD) for Stephenville, revised 2014-02. Read it.
Engineering properties
| Mapped area (SSURGO) | 979,159 acres |
| Shrink-swell limits houses without basements | 0.0% |
| Shallow water table limits basements | 0.0% |
| Very limited for septic absorption fields | 97.3% |
| Most common drainage class | Well drained |
| Most common hydrologic soil group | C |
| Taxonomic class | Fine-loamy, siliceous, active, thermic Ultic Haplustalfs |
| Type location | Oklahoma County, Oklahoma |
Where Stephenville is mapped
| State | Mapped acres |
|---|---|
| Oklahoma | 921,654 |
| Kansas | 40,767 |
| Texas | 16,738 |
Places where Stephenville leads
Counties and cities where Stephenville covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Seminole County, OK | 23% |
| Stephens County, OK | 22% |
| Lincoln County, OK | 16% |
| Cleveland County, OK | 15% |
| Pottawatomie County, OK | 15% |
| Oklahoma County, OK | 14% |
| Grady County, OK | 13% |
| Garvin County, OK | 11% |
| Logan County, OK | 10% |
| Okfuskee County, OK | 8% |
Other places where Stephenville is a main soil
Counties and cities where Stephenville is among the six soil series covering the most mapped land, but not the first. Share of the place's mapped land.
Counties
Texas and Ohio cities
- Ector, TX 19%
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.