HomeSoil seriesRader
Rader soil series
Rader soils cover 305,998 mapped acres, almost all of them in Texas. USDA rates shrink-swell a limit for houses without basements on 30% of that land, and a shallow water table a limit for basements on 97%.
It is the leading soil series by area in 10 of the counties and cities on this site, including Madison County, TX.
SSURGO survey versions to August 5, 2026 · series description revised 2018-02
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 Rader series consists of very deep, moderately well drained, very slowly permeable soils that formed in slightly acid to alkaline clayey and loamy alluvium derived from sandstone and shale. These soils are on nearly level to gently sloping stream terraces and terrace remnants on inland dissected coastal plains. Slopes range from 0 to 3 percent. Mean annual precipitation is about 1041 mm (41 in) and the mean annual air temperature is about 18.3 degrees C (65 degrees F).
Source: USDA NRCS series description (OSD) for Rader, revised 2018-02. Read it.
Engineering properties
| Mapped area (SSURGO) | 305,998 acres |
| Shrink-swell limits houses without basements | 30.3% |
| Shallow water table limits basements | 97.3% |
| Very limited for septic absorption fields | 93.1% |
| Most common drainage class | Moderately well drained |
| Most common hydrologic soil group | D |
| Taxonomic class | Fine-loamy, mixed, semiactive, thermic Aquic Paleustalfs |
| Type location | Kaufman County, Texas |
Where Rader is mapped
| State | Mapped acres |
|---|---|
| Texas | 305,998 |
Places where Rader leads
Counties and cities where Rader covers more mapped land than any other series.
| Place | Share of mapped land |
|---|---|
| Oakwood, TX | 52% |
| Milano, TX | 46% |
| Campbell, TX | 40% |
| Rockdale, TX | 33% |
| Balch Springs, TX | 31% |
| Franklin, TX | 30% |
| Hempstead, TX | 19% |
| Madison County, TX | 14% |
| Hurst, TX | 13% |
| North Richland Hills, TX | 11% |
Other places where Rader is a main soil
Counties and cities where Rader 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
- West Tawakoni, TX 28%
- Somerville, TX 23%
- Hawk Cove, TX 18%
- Cross Timber, TX 17%
- Southlake, TX 17%
- Poetry, TX 17%
- Bedford, TX 16%
- Keene, TX 16%
- Colleyville, TX 14%
- Joshua, TX 13%
- Post Oak Bend, TX 13%
- Briaroaks, TX 13%
- Pelican Bay, TX 12%
- Seven Points, TX 12%
- Grays Prairie, TX 12%
- Tool, TX 12%
- Payne Springs, TX 11%
- Keller, TX 9%
- Euless, TX 9%
- Kennedale, TX 9%
- Grapevine, TX 7%
- Dalworthington Gardens, TX 7%
- Irving, TX 7%
- Westlake, TX 6%
- Star Harbor, TX 6%
- Pantego, TX 6%
- Union Valley, TX 6%
- Bedias, TX 6%
- Kosse, TX 6%
- Kurten, TX 6%
- Burleson, TX 6%
- Gun Barrel City, TX 6%
- Bremond, TX 6%
- Quinlan, TX 5%
- Mansfield, TX 4%
- Enchanted Oaks, TX 4%
- Calvert, TX 4%
- Arlington, TX 3%
- Log Cabin, TX 3%
- Caney City, TX under 1%
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.