HomeSoil seriesSherm
Sherm soil series
Sherm soils cover 1,437,579 mapped acres, mostly in Texas, Oklahoma and New Mexico. USDA rates shrink-swell a limit for houses without basements on 95% of that land, and a shallow water table a limit for basements on 0%.
It is the leading soil series by area in 11 of the counties and cities on this site, including Ochiltree County, TX; Moore County, TX; Hansford County, TX.
SSURGO survey versions to August 5, 2026 · series description revised 2007-06
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 Sherm series consists of very deep, well drained, slowly permeable soils that formed in loamy and clayey eolian sediments of Pleistocene age. These soils are on nearly level to very gently sloping eolian plains. Slopes range from 0 to 3 percent. The mean annual precipitation is 496 mm (19 inches) and the mean annual temperature is 13 degrees C (55 degrees F).
Source: USDA NRCS series description (OSD) for Sherm, revised 2007-06. Read it.
Engineering properties
| Mapped area (SSURGO) | 1,437,579 acres |
| Shrink-swell limits houses without basements | 95.2% |
| Shallow water table limits basements | 0.0% |
| Very limited for septic absorption fields | 95.2% |
| Most common drainage class | Well drained |
| Most common hydrologic soil group | C |
| Taxonomic class | Fine, mixed, superactive, mesic Torrertic Paleustolls |
| Type location | Sherman County, Texas |
Where Sherm is mapped
| State | Mapped acres |
|---|---|
| Texas | 1,117,333 |
| Oklahoma | 267,906 |
| New Mexico | 52,340 |
Places where Sherm leads
Counties and cities where Sherm covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Sunray, TX | 80% |
| Perryton, TX | 74% |
| Dumas, TX | 67% |
| Stratford, TX | 61% |
| Cactus, TX | 57% |
| Gruver, TX | 48% |
| Ochiltree County, TX | 46% |
| Moore County, TX | 43% |
| Hansford County, TX | 34% |
| Sherman County, TX | 30% |
| Hutchinson County, TX | 17% |
Other places where Sherm is a main soil
Counties and cities where Sherm 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
- Booker, TX 24%
- Spearman, TX 8%
- Texline, TX 3%
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.