Armstrong County, Texas
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Armstrong County, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pullman silty clay loam, 0 to 1 percent slopes | 171K | Well drained | C | Somewhat limited | Very limited |
| Rough broken land | 48K | Well drained | C | Very limited | Very limited |
| Mobeetie-Veal-Potter complex, 3 to 20 percent slopes | 41K | Well drained | A | Somewhat limited | Somewhat limited |
| Pullman silty clay loam, 1 to 3 percent slopes | 38K | Well drained | C | Somewhat limited | Very limited |
| Weymouth-Knoco complex | 33K | Well drained | C | Somewhat limited | Somewhat limited |
| Quinlan complex | 29K | Well drained | D | Very limited | Very limited |
| Cottonwood loam, 15 to 20 percent slopes | 25K | Well drained | D | Very limited | Very limited |
| Mobeetie-Veal complex, 3 to 8 percent slopes | 24K | Well drained | A | Not limited | Not limited |
| Berda-Veal association, 3 to 8 percent slopes | 17K | Well drained | B | Not limited | Somewhat limited |
| Randall clay, 0 to 1 percent slopes, occasionally ponded | 15K | Poorly drained | D | Very limited | Very limited |
| Potter soils, 3 to 20 percent slopes, cool | 15K | Well drained | C | Somewhat limited | Very limited |
| Mansker loam, 3 to 5 percent slopes | 13K | Well drained | B | Not limited | Somewhat limited |
| Lofton clay loam, 0 to 1 percent slopes, occasionally ponded | 10K | Moderately well drained | D | Very limited | Very limited |
| Olton clay loam, 1 to 3 percent slopes | 10K | Well drained | C | Somewhat limited | Very limited |
| Abilene clay loam, dry, 0 to 1 percent slopes | 10K | Well drained | C | Somewhat limited | Very limited |
| Estacado clay loam, 1 to 3 percent slopes | 9K | Well drained | B | Somewhat limited | Somewhat limited |
| Tascosa gravelly loam, 3 to 30 percent slopes | 8K | Well drained | B | Very limited | Very limited |
| Bippus clay loam, 1 to 3 percent slopes | 6K | Well drained | B | Somewhat limited | Somewhat limited |
| Woodward loam, 3 to 5 percent slopes, warm | 6K | Well drained | C | Somewhat limited | Very limited |
| Lazbuddie clay, 0 to 1 percent slopes, occasionally ponded | 5K | Moderately well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 26% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 73% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.