HomeSoil seriesWilson
Wilson soil series
Wilson soils cover 891,278 mapped acres, almost all of them in Texas. USDA rates shrink-swell a limit for houses without basements on 88% of that land, and a shallow water table a limit for basements on 19%.
It is the leading soil series by area in 27 of the counties and cities on this site, including Falls County, TX; Kaufman County, TX.
SSURGO survey versions to August 5, 2026 · series description revised 2017-08
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 Wilson series consists of very deep, moderately well drained, very slowly permeable soils that formed in calcareous clayey alluvium of Pleistocene age derived from mudstone. These nearly level to gently sloping soils are on treads of Pleistocene stream terraces. Slopes are mainly less than 1 percent but range from 0 to 5 percent. Mean annual precipitation is about 1003 mm (39.5 in) and the mean annual air temperature is about 18.1 degrees C (64.6 degrees F).
Source: USDA NRCS series description (OSD) for Wilson, revised 2017-08. Read it.
Engineering properties
| Mapped area (SSURGO) | 891,278 acres |
| Shrink-swell limits houses without basements | 88.1% |
| Shallow water table limits basements | 19.4% |
| Very limited for septic absorption fields | 88.1% |
| Most common drainage class | Moderately well drained |
| Most common hydrologic soil group | D |
| Taxonomic class | Fine, smectitic, thermic Oxyaquic Vertic Haplustalfs |
| Type location | Kaufman County, Texas |
Where Wilson is mapped
| State | Mapped acres |
|---|---|
| Texas | 863,356 |
| Oklahoma | 27,921 |
Places where Wilson leads
Counties and cities where Wilson covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Rosebud, TX | 99% |
| Cooper, TX | 58% |
| Alma, TX | 56% |
| Kerens, TX | 47% |
| Rice, TX | 46% |
| Marlin, TX | 45% |
| Mount Calm, TX | 43% |
| Ellinger, TX | 43% |
| Garrett, TX | 42% |
| Pecan Gap, TX | 39% |
| Ector, TX | 38% |
| Goodlow, TX | 36% |
| Ennis, TX | 36% |
| Oak Ridge, TX | 36% |
| Quinlan, TX | 36% |
| Coolidge, TX | 35% |
| Valley View, TX | 31% |
| Terrell, TX | 31% |
| Caddo Mills, TX | 30% |
| Neylandville, TX | 30% |
| Kaufman, TX | 29% |
| Somerville, TX | 23% |
| Gainesville, TX | 23% |
| Kemp, TX | 21% |
| Falls County, TX | 20% |
| Navasota, TX | 17% |
| Kaufman County, TX | 11% |
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.